Remove option user

Now the program handles automatically the correct user even when
running with sudo

LICENSE

@@ -1,281 +1,622 @@
                     GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+                       Version 3, 29 June 2007
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/>
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
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+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
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-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
 
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
+  13. Use with the GNU Affero General Public License.
 
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices.  Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
 
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
+  14. Revised Versions of this License.
 
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
 
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
 
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
 
-                            NO WARRANTY
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
 
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
+  15. Disclaimer of Warranty.
 
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
 
                      END OF TERMS AND CONDITIONS
 
@@ -287,15 +628,15 @@ free software which everyone can redistribute and change under these terms.
 
   To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
+state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
-    {description}
-    Copyright (C) {year}  {fullname}
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
 
-    This program is free software; you can redistribute it and/or modify
+    This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
+    the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
@@ -303,38 +644,31 @@ the "copyright" line and a pointer to where the full notice is found.
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.
 
 The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
 
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
-
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  {signature of Ty Coon}, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
 
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

PKGBUILD

@@ -0,0 +1,30 @@
+#Arch Linux PKGBUILD
+#
+#Maintainer: Daniele Fucini <dfucini@gmail.com>
+#
+
+pkgname=simple-backup
+pkgver=2.0.0.r3.gc61c704
+pkgrel=1
+pkgdesc='Simple backup script that uses rsync to copy files'
+arch=('any')
+url="https://github.com/Fuxino/simple-backup.git"
+license=('GPL3')
+makedepends=('git')
+depends=('python3'
+         'rsync')
+install=${pkgname}.install
+source=(git+https://github.com/Fuxino/${pkgname}.git)
+sha256sums=('SKIP')
+
+pkgver() 
+{  
+   cd "$pkgname"
+   git describe --long --tags | sed 's/\([^-]*-g\)/r\1/;s/-/./g'
+}
+
+package()
+{
+   install -Dm755 "${srcdir}/${pkgname}/${pkgname}.py" "${pkgdir}/usr/bin/${pkgname}"
+   install -Dm644 "${srcdir}/${pkgname}/config" "${pkgdir}/etc/${pkgname}/config"
+}

README.md

@@ -1,2 +1,10 @@
-# simple_backup
-A simple backup script using rsync
+# simple-backup
+A simple backup script
+
+## Description
+simple-backup is a Python script that allows you to backup your files.
+It reads from a configuration file the files/directories that must be copied,
+the destination directory for the backup and a few other options.
+
+## Dependencies
+rsync is used to perform the backup.  

config

@@ -1,5 +1,7 @@
 #Example config file for my_backup
 
+# WARNING: Values should NOT be quoted, e.g. use inputs=/some/dir instead of inputs="/some/dir"
+
 #Input directories. Use a comma to separate items
 inputs=/home/my_home,/etc
 
@@ -9,5 +11,5 @@ backup_dir=/media/Backup
 #Exclude patterns. Use a comma to separate items
 exclude=.gvfs,.cache*,[Cc]ache*,.thumbnails*,[Tt]rash*,*.backup*,*~,.dropbox*
 
-#Number of snapshots to keep (default: keep all)
-keep=
+#Number of snapshots to keep (use -1 to keep all)
+keep=-1

simple-backup.install

@@ -0,0 +1,7 @@
+post_install() {
+   echo "An example configuration file is found in /etc/simple_backup/config."
+}
+
+post_upgrade() {
+   post_install
+}

simple-backup.py

@@ -0,0 +1,542 @@
+#!/usr/bin/python3
+
+# Import libraries
+from sys import exit, argv
+
+import os
+from os.path import expanduser, isfile, isdir, islink, exists
+from shutil import move, rmtree
+
+import subprocess
+
+from datetime import datetime
+from tempfile import mkstemp
+
+class Backup():
+
+    def __init__(self, *args, **kwargs):
+        super(Backup, self).__init__(*args, **kwargs)
+        
+        self.log_path = ''
+        self.logfile = None
+        self.err_path = ''
+        self.errfile = None
+        self.warn_path = ''
+        self.warnfile = None
+        self.homedir = ''
+        self.backup_dev = ''
+        self.backup_dir = ''
+        self.last_backup = ''
+        self.inputs = ''
+        self.inputs_path = ''
+        self.exclude_path = ''
+        self.exclude = ''
+        self.options = ''
+        self.keep = -1
+        self.n_in = 0
+
+    # Help function
+    def help_function(self):
+        print('simple_backup, version 2.0.0')
+        print('')
+        print('Usage: {} [OPTIONS]'.format(argv[0]))
+        print('')
+        print('Options:')
+        print('-h, --help                             Print this help and exit.')
+        print('-c, --config      CONFIG_FILE          Use the specified configuration file')
+        print('                                       instead of the default one.')
+        print('                                       All other options are ignored.')
+        print('-i, --input       INPUT [INPUT...]     Specify a file/dir to include in the backup.')
+        print('-d, --directory   DIR                  Specify the output directory for the backup.')
+        print('-e, --exclude     PATTERN [PATTERN...] Specify a file/dir/pattern to exclude from')
+        print('                                       the backup.')
+        print('-k, --keep        NUMBER               Specify the number of old backups to keep.')
+        print('                                       Default: keep all.')
+        print('-s, --checksum                         Use the checksum rsync option to compare files')
+        print('                                       (MUCH slower).')
+        print('')
+        print('If no option is given, the program uses the default')
+        print('configuration file: $HOMEDIR/.simple_backup/config.')
+        print('')
+        print('Report bugs to dfucini@gmail.com')
+
+        exit(0)
+
+    # Function to read configuration file
+    def read_conf(self, config=None):
+        if config is None:
+            config = self.homedir + '/.simple_backup/config'
+
+            if not isfile(config):
+            # If default config file doesn't exist, exit
+                log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
+                self.logfile.write(log_message)
+                self.logfile.write('\n')
+                print('Backup failed')
+                err_message = 'Error: Configuration file not found'
+                print(err_message)
+                self.errfile.write(err_message)
+                self.errfile.write('\n')
+
+                self.logfile.close()
+                self.errfile.close()
+                self.warnfile.close()
+
+                move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
+                move(self.err_path, self.homedir + '/.simple_backup/errors.log')
+                move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
+
+                exit(1)
+        else:
+            if not isfile(config):
+                # If the provided configuration file doesn't exist, exit
+                log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
+                self.logfile.write(log_message)
+                self.logfile.write('\n')
+                print('Backup failed')
+                err_message = 'Error: Configuration file not found'
+                print(err_message)
+                self.errfile.write(err_message)
+                self.errfile.write('\n')
+
+                self.logfile.close()
+                self.errfile.close()
+                self.warnfile.close()
+
+                move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
+                move(self.err_path, self.homedir + '/.simple_backup/errors.log')
+                move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
+
+                exit(1)
+
+        # Create temporary files
+        inputs_handle, self.inputs_path = mkstemp(prefix='tmp_inputs', text=True)
+        exclude_handle, self.exclude_path = mkstemp(prefix='tmp_exclude', text=True)
+
+        # Open temporary files
+        self.inputs = open(self.inputs_path, 'w')
+        self.exclude = open(self.exclude_path, 'w')
+
+        # Parse the configuration file
+        with open(config, 'r') as fp:
+            line = fp.readline()
+
+            while line:
+                if line[:7] == 'inputs=':
+                    line = line[7:].rstrip()
+                    input_values = line.split(',')
+                    n_in = 0
+                    for i in input_values:
+                        if not exists(i):
+                            warn_message = 'Warning: input "' + i + '" not found. Skipping'
+                            print(warn_message)
+                            self.warnfile.write(warn_message)
+                            self.warnfile.write('\n')
+                        else:
+                            self.inputs.write(i)
+                            self.inputs.write('\n')
+                            self.n_in = self.n_in + 1
+                elif line[:11] == 'backup_dir=':
+                    line = line[11:].rstrip()
+                    self.backup_dev = line
+                elif line[:8] == 'exclude=':
+                    line = line[8:].rstrip()
+                    exclude_values = line.split(',')
+                    for i in exclude_values:
+                        self.exclude.write(i)
+                        self.exclude.write('\n')
+                elif line[:5] == 'keep=':
+                    line = line[5:].rstrip()
+                    self.keep = int(line)
+
+                line = fp.readline()
+
+            fp.close()
+            self.inputs.close()
+            self.exclude.close()
+
+        # If the backup directory is not set or doesn't exist, exit
+        if self.backup_dev == '' or not isdir(self.backup_dev):
+            log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
+            self.logfile.write(log_message)
+            self.logfile.write('\n')
+            print('Backup failed')
+            err_message = 'Error: Output folder "' + self.backup_dev + '" not found'
+            print(err_message)
+            self.errfile.write(err_message)
+            self.errfile.write('\n')
+
+            self.logfile.close()
+            self.errfile.close()
+            self.warnfile.close()
+
+            move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
+            move(self.err_path, self.homedir + '/.simple_backup/errors.log')
+            move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
+
+            exit(1)
+
+        self.backup_dir = self.backup_dev + '/simple_backup'
+        date = str(datetime.now())
+
+        # Create the backup subdirectory using date
+        if isdir(self.backup_dir):
+            # If previous backups exist, save link to the last backup
+            self.last_backup = self.backup_dir + '/last_backup'
+            if islink(self.last_backup):
+                try:
+                    self.last_backup = os.readlink(self.last_backup)
+                except:
+                    print('An error occurred when reading the last_backup link')
+                    exit(1)
+            else:
+                self.last_backup = ''
+
+        self.backup_dir = self.backup_dir + '/' + date
+
+        try:
+            os.makedirs(self.backup_dir)
+        except PermissionError as e:
+            print(str(e))
+            exit(1)
+        except:
+            print('Failed to create backup directory')
+            exit(1)
+
+        return
+
+    # Function to parse options
+    def parse_options(self):
+        # Create temporary files
+        inputs_handle, self.inputs_path = mkstemp(prefix='tmp_inputs', text=True)
+        exclude_handle, self.exclude_path = mkstemp(prefix='tmp_exclude', text=True)
+
+        # Open temporary files
+        self.inputs = open(self.inputs_path, 'w')
+        self.exclude = open(self.exclude_path, 'w')
+
+        i = 1
+        while i < len(argv):
+            var = argv[i]
+
+            if var == '-h' or var == '--help':
+                self.help_function()
+            elif var == '-i' or var == '--input':
+                val = argv[i+1]
+                while i < len(argv) - 1 and val[0] != '-':
+                    inp = val
+
+                    if not exists(inp):
+                        warn_message = 'Warning: input "' + inp + '" not found. Skipping'
+                        print(warn_message)
+                        self.warnfile.write(warn_message)
+                        self.warnfile.write('\n')
+                    else:
+                        self.n_in = self.n_in + 1
+                        self.inputs.write(inp)
+                        self.inputs.write('\n')
+
+                    i = i + 1
+                    val = argv[i+1]
+            elif var == '-d' or var == '--directory':
+                self.backup_dev = argv[i+1]
+
+                if not exists(self.backup_dev) or not isdir(self.backup_dev):
+                    log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
+                    self.logfile.write(log_message)
+                    self.logfile.write('\n')
+                    print('Backup failed')
+                    err_message = 'Error: output folder "' + self.backup_dev + '" not found'
+                    print(err_message)
+                    self.errfile.write(err_message)
+                    self.errfile.write('\n')
+
+                    self.logfile.close()
+                    self.errfile.close()
+                    self.warnfile.close()
+
+                    move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
+                    move(self.err_path, self.homedir + '/.simple_backup/errors.log')
+                    move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
+
+                    exit(1)
+
+                self.backup_dir = self.backup_dev + '/simple_backup'
+                date = str(datetime.now())
+
+                # Create the backup subdirectory using date
+                if isdir(self.backup_dir):
+                    #If previous backups exist, save link to the last backup
+                    self.last_backup = self.backup_dir + '/last_backup'
+                    if islink(self.last_backup):
+                        try:
+                            self.last_backup = os.readlink(self.last_backup)
+                        except:
+                            print('An error occurred when reading the last_backup link')
+                            exit(1)
+                    else:
+                        self.last_backup = ''
+
+                self.backup_dir = self.backup_dir + '/' + date
+
+                try:
+                    os.makedirs(self.backup_dir)
+                except PermissionError as e:
+                    print(str(e))
+                    exit(1)
+                except:
+                    print('Failed to create backup directory')
+                    exit(1)
+
+                i = i + 1
+            elif var == '-e' or var == '--exclude':
+                val = argv[i+1]
+                while i < len(argv) - 1 and val[0] != '-':
+                    exc = val
+                    self.exclude.write(exc)
+                    self.exclude.write('\n')
+
+                    i = i + 1
+                    val = argv[i+1]
+            elif var == '-k' or var == '--keep':
+                self.keep = int(argv[i+1])
+
+                i = i + 1
+            elif var == '-c' or var == '--config':
+                self.read_conf(argv[i+1])
+
+                i = i + 1
+            elif var == '-s' or var == '--checksum':
+                self.options = '-arcvh -H -X'
+            else:
+                log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
+                self.logfile.write(log_message)
+                self.logfile.write('\n')
+                print('Backup failed')
+                err_message = 'Error: Option "' + var + '" not recognised. Use "simple-backup -h" to see available options'
+                self.errfile.write(err_message)
+                self.errfile.write('\n')
+
+                self.logfile.close()
+                self.errfile.close()
+                self.warnfile.close()
+
+                move(self.log_path, self.homedir + '/.simple_backup/simple_backup.log')
+                move(self.err_path, self.homedir + '/.simple_backup/errors.log')
+                move(self.warn_path, self.homedir + '/.simple_backup/warnings.log')
+
+                exit(1)
+
+            i = i + 1
+
+        self.inputs.close()
+        self.exclude.close()
+
+        return
+
+    def exec_(self):
+        print('Copying files. This may take a long time...')
+
+        if self.last_backup == '':
+            rsync = 'rsync ' + self.options + ' --exclude-from=' + self.exclude_path +\
+                    ' --files-from=' + self.inputs_path + ' / "' + self.backup_dir +\
+                    '" --ignore-missing-args >> ' + self.log_path + ' 2>> ' + self.err_path
+        else:
+            rsync = 'rsync ' + self.options + ' --link-dest="' + self.last_backup + '" --exclude-from=' +\
+                    self.exclude_path + ' --files-from=' + self.inputs_path + ' / "' + self.backup_dir +\
+                    '" --ignore-missing-args >> ' + self.log_path + ' 2>> ' + self.err_path
+
+        subprocess.run(rsync, shell=True)
+
+        return
+
+def main():
+
+    backup = Backup()
+
+    # Create temporary log files
+    log_handle, backup.log_path = mkstemp(prefix='tmp_log', text=True)
+    err_handle, backup.err_path = mkstemp(prefix='tmp_err', text=True)
+    warn_handle, backup.warn_path = mkstemp(prefix='tmp_warn', text=True)
+
+    # Open log files
+    backup.logfile = open(backup.log_path, 'w')
+    backup.errfile = open(backup.err_path, 'w')
+    backup.warnfile = open(backup.warn_path, 'w')
+
+    # Set homedir and default options
+    try:
+        backup.homedir = '/home/' + os.environ['SUDO_USER']
+    except:
+        backup.homedir = expanduser('~')
+
+    backup.options = '-arvh -H -X'
+
+    # Check number of parameters
+    if len(argv) == 1:
+        # If simple backup directory doesn't exist, create it and exit
+        if not isdir(backup.homedir + '/.simple_backup'):
+            try:
+                os.makedir(backup.homedir + '/.simple_backup')
+                print('Created directory "' + backup.homedir + '/.simple_backup".')
+                print('Copy there the sample configuration and edit it')
+                print('to your needs before running the backup,')
+                print('or pass options on the command line.')
+            except:
+                print('Failed to create .simple_backup directory in HOME')
+
+            exit(1)
+
+        # Read configuration file
+        backup.read_conf()
+    else:
+        backup.parse_options()
+
+    if backup.n_in > 0 and (backup.backup_dir == '' or 
+            not isdir(backup.backup_dir)):
+        #If the backup directory is not set or doesn't exist, exit
+        log_message = str(datetime.now()) + ': Backup failed (see errors.log)'
+        backup.logfile.write(log_message)
+        backup.logfile.write('\n')
+        err_message = 'Error: Output folder "' + backup.backup_dev.getBackupDev + '" not found'
+        backup.errfile.write(err_message)
+        backup.errfile.write('\n')
+
+        backup.logfile.close()
+        backup.errfile.close()
+        backup.warnfile.close()
+
+        move(backup.log_path, backup.homedir + '/.simple_backup/simple_backup.log')
+        move(backup.err_path, backup.homedir + '/.simple_backup/errors.log')
+        move(backup.warn_path, backup.homedir + '/.simple_backup/warnings.log')
+
+        exit(1)
+    elif backup.n_in == 0 and backup.backup_dir == '':
+        if not isdir(backup.homedir + '/.simple_backup'):
+            try:
+                os.makedir(backup.homedir + '/.simple_backup')
+                print('Created directory "' + backup.homedir + '/.simple_backup".')
+                print('Copy there the sample configuration and edit it')
+                print('to your needs before running the backup')
+                print('or pass options on the command line.')
+            except:
+                print('Failed to create .simple_backup directory in HOME')
+
+            exit(1)
+
+        backup.read_conf(backup.homedir + '/.simple_backup/config')
+
+    if backup.n_in == 0:
+        log_message = str(datetime.now()) + ': Backup finished (no files copied)'
+        backup.logfile.write(log_message)
+        backup.logfile.write('\n')
+        print('Backup finished (no files copied')
+        warn_message = 'Warning: no valid input selected. Nothing to do'
+        backup.warnfile.write(warn_message)
+        backup.warnfile.write('\n')
+        print(warn_message)
+               
+        backup.logfile.close()
+        backup.errfile.close()
+        backup.warnfile.close()
+
+        move(backup.log_path, backup.homedir + '/.simple_backup/simple_backup.log')
+        move(backup.err_path, backup.homedir + '/.simple_backup/errors.log')
+        move(backup.warn_path, backup.homedir + '/.simple_backup/warnings.log')
+
+        exit(0)
+
+    log_message = str(datetime.now()) + ': Starting backup'
+    backup.logfile.write(log_message)
+    backup.logfile.write('\n')
+    print('Starting backup...')
+
+    #If specified, keep the last n backups and remove the others. Default: keep all
+    if backup.keep > -1:
+        try:
+            dirs = os.listdir(backup.backup_dev + '/simple_backup')
+        except:
+            print('Failed to list backup directory')
+            exit(1)
+        if dirs.count('last_backup') > 0:
+            dirs.remove('last_backup')
+        n_backup = len(dirs) - 1
+
+        if n_backup > backup.keep:
+            log_message = str(datetime.now()) + ': Removing old backups'
+            backup.logfile.write(log_message)
+            backup.logfile.write('\n')
+            print('Removing old backups...')
+            dirs.sort()
+
+            err_flag = 0
+
+            for i in range(n_backup-backup.keep):
+                try:
+                    rmtree(backup.backup_dev + '/simple_backup/' + dirs[i])
+                    log_message = 'Removed backup: ' + dirs[i]
+                    backup.logfile.write(log_message)
+                    backup.logfile.write('\n')
+                except:
+                    err_message = 'Error while removing backup ' + dirs[i]
+                    backup.errfile.write(err_message)
+                    backup.errfile.write('\n')
+                    err_flag = 1
+
+            if err_flag:
+                print(err_message)
+
+    backup.logfile.close()
+    backup.errfile.close()
+    backup.warnfile.close()
+
+    backup.exec_()
+
+    # Update the logs
+    backup.logfile = open(backup.log_path, 'a')
+
+    if os.stat(backup.err_path).st_size > 0:
+        log_message = str(datetime.now()) + ': Backup finished with errors'
+        backup.logfile.write(log_message)
+        backup.logfile.write('\n')
+        print('Backup finished with errors')
+    elif os.stat(backup.warn_path).st_size > 0:
+        log_message = str(datetime.now()) + ': Backup finished with warnings'
+        backup.logfile.write(log_message)
+        backup.logfile.write('\n')
+        print('Backup finished (warnings)')
+    else: 
+        log_message = str(datetime.now()) + ': Backup finished'
+        backup.logfile.write(log_message)
+        backup.logfile.write('\n')
+        print('Backup finished')
+
+    backup.logfile.close()
+
+    # Copy log files in home directory
+    move(backup.log_path, backup.homedir + '/.simple_backup/simple_backup.log')
+    move(backup.err_path, backup.homedir + '/.simple_backup/errors.log')
+    move(backup.warn_path, backup.homedir + '/.simple_backup/warnings.log')
+
+    if islink(backup.backup_dev + '/simple_backup/last_backup'):
+        try:
+            os.remove(backup.backup_dev + '/simple_backup/last_backup')
+        except:
+            print('Failed to remove last_backup link')
+
+    try:
+        os.symlink(backup.backup_dir, backup.backup_dev + '/simple_backup/last_backup')
+    except:
+        print('Failed to create last_backup link')
+
+    # Delete temporary files
+    try:
+        os.remove(backup.inputs_path)
+        os.remove(backup.exclude_path)
+    except:
+        print('Failed to remove temporary files')
+
+    exit(0)
+
+if __name__ == '__main__':
+    main()

simple_backup

@@ -1,467 +0,0 @@
-#!/bin/bash
-
-#Copyright 2015 Daniele Fucini <dfucini@gmail.com>
-
-#This program is free software: you can redistribute it and/or modify
-#it under the terms of the GNU General Public License as published by
-#the Free Software Foundation, either version 3 of the License, or
-#(at your option) any later version.
-
-#This program is distributed in the hope that it will be useful,
-#but WITHOUT ANY WARRANTY; without even the implied warranty of
-#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#GNU General Public License for more details.
-
-#You should have received a copy of the GNU General Public License
-#along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-#Version 1.2
-#Simple backup script. Reads options, sources and destination from a configuration file or standard input
-
-#Help function
-function help_function {
-   echo "simple_backup, version 1.0.0"
-   echo ""
-   echo "Usage: $0 [OPTIONS]"
-   echo ""
-   echo "Options:"
-   echo "-h, --help                             Print this help and exit."
-   echo "-c, --config      CONFIG_FILE          Use the specified configuration file"
-   echo "                                       instead of the default one."
-   echo "                                       All other options are ignored."
-   echo "-i, --input       INPUT [INPUT...]     Specify a file/dir to include in the backup."
-   echo "-d, --directory   DIR                  Specify the output directory for the backup."
-   echo "-e, --exclude     PATTERN [PATTERN...] Specify a file/dir/pattern to exclude from"
-   echo "                                       the backup."
-   echo "-k, --keep        NUMBER               Specify the number of old backups to keep."
-   echo "                                       Default: keep all."
-   echo ""
-   echo "If no option is given, the program uses the default"
-   echo "configuration file: $HOME/.simple_backup/config."
-   echo ""
-   echo "Report bugs to dfucini@gmail.com"
-   exit 0
-}
-
-#Read configuration file
-function read_conf {
-   if [[ "$#" -eq 0 ]]; then
-      CONFIG="$HOME/.simple_backup/config"
-   else
-      CONFIG="$1"
-
-      if [[ ! -f "$CONFIG" ]]; then
-         #If the provided configuration file doesn't exist, exit
-         echo "$(date): Backup failed (see errors.log)" >> $HOME/.simple_backup/simple_backup.log
-         echo "Error: Configuration file not found" | tee -a $HOME/.simple_backup/errors.log
-         #If libnotify is installed, show desktop notification that backup failed
-         ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-         if [[ -f $HOME/.simple_backup/simple_backup.log.old ]]; then
-            rm -f $HOME/.simple_backup/simple_backup.log.old
-         fi
-
-         if [[ -f $HOME/.simple_backup/errors.log.old ]]; then
-            rm -f $HOME/.simple_backup/errors.log.old
-         fi
-
-         if [[ -f $HOME/.simple_backup/warnings.log.old ]]; then
-            rm -f $HOME/.simple_backup/warnings.log.old
-         fi
-
-         exit 1
-      fi
-
-   fi
-
-   #Create temporary files
-   INPUTS=$(mktemp)
-   EXCLUDE=$(mktemp)
-   BACKUP=$(mktemp)
-   NKEEP=$(mktemp)
-
-   #Parse the configuration file
-   awk -v INPUTS="$INPUTS" -v EXCLUDE="$EXCLUDE" -v BACKUP="$BACKUP" \
-       -v NKEEP="$NKEEP" -v UHOME="$HOME/" -F '[=,]' \
-      '$1=="inputs" { for ( i=2; i<=NF; i++ ) { sub(/^~\//,UHOME,$i); print $i > INPUTS } }
-       $1=="backup_dir" { sub(/^~\//,UHOME,$2); print $2 > BACKUP }
-       $1=="exclude" { for ( i=2; i<=NF; i++ ) { sub(/^~\//,UHOME,$i); print $i > EXCLUDE } }
-       $1=="keep" { if ( $2 != NULL ) { print $2 > NKEEP } }' $CONFIG
-
-   BACKUP_DEV=$(cat $BACKUP)
-   KEEP=$(cat $NKEEP)
-   
-   rm "$BACKUP"
-   rm "$NKEEP"
-
-   if [[ -z "$BACKUP_DEV" || ! -d "$BACKUP_DEV" ]]; then
-      #If the backup directory is not set or doesn't exist, exit
-      echo "$(date): Backup failed (see errors.log)" >> $HOME/.simple_backup/simple_backup.log
-      echo "Error: Output folder \"$BACKUP_DEV\" not found" | tee -a $HOME/.simple_backup/errors.log
-      #If libnotify is installed, show desktop notification that backup failed
-      ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-      if [[ -f $HOME/.simple_backup/simple_backup.log.old ]]; then
-         rm -f $HOME/.simple_backup/simple_backup.log.old
-      fi
-
-      if [[ -f $HOME/.simple_backup/errors.log.old ]]; then
-         rm -f $HOME/.simple_backup/errors.log.old
-      fi
-
-      if [[ -f $HOME/.simple_backup/warnings.log.old ]]; then
-         rm -f $HOME/.simple_backup/warnings.log.old
-      fi
-
-      rm "$INPUTS"
-      rm "$EXCLUDE"
-
-      exit 1
-   fi
-
-   BACKUP_DIR=$BACKUP_DEV/simple_backup
-   DATE=$(date +%Y-%m-%d-%H:%M)
-
-   #Create the backup subdirectory using date
-   if [[ ! -d "$BACKUP_DIR" ]]; then
-      mkdir -p "$BACKUP_DIR/$DATE"
-   else
-   #If previous backup(s) exist(s), save link to the last backup
-      LAST_BACKUP=$(readlink -f "$BACKUP_DIR/last_backup")
-      mkdir "$BACKUP_DIR/$DATE"
-   fi
-
-   #Set the backup directory variable to the newly created subfolder
-   BACKUP_DIR="$BACKUP_DIR/$DATE"
-
-   n_in=$(cat $INPUTS | wc -l)
-   
-   return
-}
-
-#Parse options
-function parse_options {
-   i=1
-   n_in=0
-   
-   #Create a temporary file to store inputs
-   INPUTS=$(mktemp)
-   #Create temp file to store exclude patterns
-   EXCLUDE=$(mktemp)
-
-   while [[ "$#" -gt 0 ]]
-   do
-      var="$1"
-
-      case "$var" in
-         -h | --help)
-            help_function
-
-            if [[ -f $HOME/.simple_backup/simple_backup.log.old ]]; then
-               mv -f $HOME/.simple_backup/simple_backup.log.old $HOME/.simple_backup/simple_backup.log
-            fi
-
-            if [[ -f $HOME/.simple_backup/errors.log.old ]]; then
-               mv -f $HOME/.simple_backup/errors.log.old $HOME/.simple_backup/errors.log
-            fi
-
-            if [[ -f $HOME/.simple_backup/warnings.log.old ]]; then
-               mv -f $HOME/.simple_backup/warnings.log.old $HOME/.simple_backup/warnings.log
-            fi
-
-            rm $INPUTS
-            rm $EXCLUDE
-
-            exit 0
-            ;;
-
-         -i | --input)
-
-            while [[ "$#" -gt 1 && ! "$2" =~ ^- ]]
-            do
-               input="$2"
-
-               if [[ -z "$input" ]]; then
-                  echo "$(date): Backup failed (see errors.log)" >> $HOME/.simple_backup/simple_backup.log
-                  echo "Error: bad options format" | tee -a $HOME/.simple_backup/errors.log
-                  #If libnotify is installed, show desktop notification that backup failed
-                  ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-                  if [[ -f $HOME/.simple_backup/simple_backup.log.old ]]; then
-                     rm -f $HOME/.simple_backup/simple_backup.log.old
-                  fi
-
-                  if [[ -f $HOME/.simple_backup/errors.log.old ]]; then
-                     rm -f $HOME/.simple_backup/errors.log.old
-                  fi
-
-                  if [[ -f $HOME/.simple_backup/warnings.log.old ]]; then
-                     rm -f $HOME/.simple_backup/warnings.log.old
-                  fi
-
-                  exit 1
-               fi
-
-               if [[ ! -e "$input" ]]; then
-                 echo "Warning: input \"${INPUTS[$i]}\" not found. Skipping" | tee -a $HOME/.simple_backup/warnings.log
-               else
-                  i=$((i+1))
-                  n_in=$((n_in+1))
-                  echo "$input" >> "$INPUTS"
-               fi
-
-               shift
-            done
-
-            ;;
-
-         -d | --directory)
-            BACKUP_DEV="$2"
-
-            if [[ -z "$BACKUP_DEV" || ! -d "$BACKUP_DEV" ]]; then
-               echo "$(date): Backup failed (see errors.log)" >> $HOME/.simple_backup/simple_backup.log
-               echo "Error: output folder \"$BACKUP_DEV\" not found" | tee -a $HOME/.simple_backup/errors.log
-               #If libnotify is installed, show desktop notification that backup failed
-               ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-               if [[ -f $HOME/.simple_backup/simple_backup.log.old ]]; then
-                  rm -f $HOME/.simple_backup/simple_backup.log.old
-               fi
-
-               if [[ -f $HOME/.simple_backup/errors.log.old ]]; then
-                  rm -f $HOME/.simple_backup/errors.log.old
-               fi
-
-               if [[ -f $HOME/.simple_backup/warnings.log.old ]]; then
-                  rm -f $HOME/.simple_backup/warnings.log.old
-               fi
-
-               exit 1
-            fi
-
-            BACKUP_DIR="$BACKUP_DEV/simple_backup"
-            DATE=$(date +%Y-%m-%d-%H:%M)
-
-            #Create the backup subdirectory using date
-            if [[ ! -d "$BACKUP_DIR" ]]; then
-               mkdir -p "$BACKUP_DIR/$DATE"
-            else
-               #If previous backup(s) exist(s), save link to the last backup
-               LAST_BACKUP=$(readlink -f "$BACKUP_DIR/last_backup")
-               mkdir "$BACKUP_DIR/$DATE"
-            fi
-
-            #Set the backup directory variable to the newly created subfolder
-            BACKUP_DIR="$BACKUP_DIR/$DATE"
-            shift
-            ;;
-
-         -e | --exclude)
-            while [[ "$#" -gt 1 && ! "$2" =~ ^- ]]
-            do
-               echo "$2" >> "$EXCLUDE"
-               shift
-            done
-            ;;
-
-         -k | --keep)
-            KEEP="$2"
-            shift
-            ;;
-
-         -c | --config)
-            if [[ -f "$EXCLUDE" ]]; then
-               rm "$EXCLUDE"
-            fi
-            read_conf "$2"
-            return
-            ;;
-
-         *)
-            echo "$(date): Backup failed (see errors.log)" >> $HOME/.simple_backup/simple_backup.log
-            echo "Error: Option $1 not recognised. Use 'simple-backup -h' to see available options" | tee -a $HOME/.simple_backup/errors.log
-            #If libnotify is installed, show desktop notification that backup failed
-            ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-            if [[ -f $HOME/.simple_backup/simple_backup.log.old ]]; then
-               rm -f $HOME/.simple_backup/simple_backup.log.old
-            fi
-
-            if [[ -f $HOME/.simple_backup/errors.log.old ]]; then
-               rm -f $HOME/.simple_backup/errors.log.old
-            fi
-
-            if [[ -f $HOME/.simple_backup/warnings.log.old ]]; then
-               rm -f $HOME/.simple_backup/warnings.log.old
-            fi
-
-            exit 1
-            ;;
-      esac
-
-      shift
-   done
-
-   return
-}
-
-#Create HOME/.simple_backup if it doesn't exist
-if [[ ! -d "$HOME/.simple_backup" ]]; then
-   mkdir "$HOME/.simple_backup"
-fi
-
-#Check number of parameters
-if [[ "$#" -lt 1 ]]; then
-   #Read parameters from configuration file
-   default_config=1
-else
-   default_config=0
-fi
-
-#Backup old log files
-if [[ -f $HOME/.simple_backup/simple_backup.log ]]; then
-   mv -f $HOME/.simple_backup/simple_backup.log $HOME/.simple_backup/simple_backup.log.old
-fi
-
-if [[ -f $HOME/.simple_backup/errors.log ]]; then
-   mv -f $HOME/.simple_backup/errors.log $HOME/.simple_backup/errors.log.old
-fi
-
-if [[ -f $HOME/.simple_backup/warnings.log ]]; then
-   mv -f $HOME/.simple_backup/warnings.log $HOME/.simple_backup/warnings.log.old
-fi
-
-#If no input parameter is given, check existence of config file
-if [[ $default_config -eq 1 && ! -f $HOME/.simple_backup/config ]]; then
-   #If no config file and input parameter is given, exit
-   echo "$(date): Backup failed (see errors.log)" >> $HOME/.simple_backup/simple_backup.log
-   echo "Error: Configuration file not found" | tee $HOME/.simple_backup/errors.log
-   #If libnotify is installed, show desktop notification that backup failed
-   ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup failed"
-
-   if [[ -f $HOME/.simple_backup/simple_backup.log.old ]]; then
-      rm -f $HOME/.simple_backup/simple_backup.log.old
-   fi
-
-   if [[ -f $HOME/.simple_backup/errors.log.old ]]; then
-      rm -f $HOME/.simple_backup/errors.log.old
-   fi
-
-   if [[ -f $HOME/.simple_backup/warnings.log.old ]]; then
-      rm -f $HOME/.simple_backup/warnings.log.old
-   fi
-
-   exit 1
-elif [[ $default_config -eq 1 && -f $HOME/.simple_backup/config ]]; then
-   #Read configuration file
-   read_conf
-else
-   #Parse command line arguments
-   parse_options "$@"
-fi
-            
-if [[ -z $n_in || $n_in -eq 0 ]]; then
-   echo "$(date): Backup finished (no files copied)" >> $HOME/.simple_backup/simple_backup.log
-   echo "Warning: no valid input selected. Nothing to do" | tee -a $HOME/.simple_backup/warnings.log
-   #If libnotify is installed, show desktop notification that backup finished
-   ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup finished (warnings)"
-               
-   if [[ -f $HOME/.simple_backup/simple_backup.log.old ]]; then
-      rm -f $HOME/.simple_backup/simple_backup.log.old
-   fi
-
-   if [[ -f $HOME/.simple_backup/errors.log.old ]]; then
-      rm -f $HOME/.simple_backup/errors.log.old
-   fi
-
-   if [[ -f $HOME/.simple_backup/warnings.log.old ]]; then
-      rm -f $HOME/.simple_backup/warnings.log.old
-   fi
-
-   exit 0
-fi
-
-echo "$(date): Starting backup" > $HOME/.simple_backup/simple_backup.log
-#If libnotify is installed, show desktop notification that backup is starting
-! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Starting backup"
-
-#If specified, keep the last n backups and remove the others. Default: keep all
-if [[ -n $KEEP ]]; then
-   N_BACKUP=$(ls -l $BACKUP_DEV/simple_backup | grep -c ^d)
-   N_BACKUP=$(($N_BACKUP-1))
-
-   if [[ $N_BACKUP -gt $KEEP ]]; then
-      echo "$(date): Removing old backups..." >> $HOME/.simple_backup/simple_backup.log
-      REMOVE=$(mktemp)
-      find $BACKUP_DEV/simple_backup/* -maxdepth 0 -type d | sort | head -n $(($N_BACKUP - $KEEP)) >> $REMOVE
-
-      while read line
-      do
-         rm -r $line
-         echo "Removed backup: $line" >> $HOME/.simple_backup/simple_backup.log
-      done<$REMOVE
-
-      rm $REMOVE  
-   fi
-      
-fi
-
-# Sort input files for rsync efficiency
-if [[ ! -z "$INPUTS" ]]; then
-   sort "$INPUTS" -o "$INPUTS"
-fi
-
-if [[ -z "$LAST_BACKUP" ]]; then
-   rsync -acrv -H -X -R --exclude-from="$EXCLUDE" --files-from="$INPUTS" / "$BACKUP_DIR" --ignore-missing-args >> "$HOME/.simple_backup/simple_backup.log" 2>> "$HOME/.simple_backup/errors.log"
-else
-   rsync -acrv -H -X -R --link-dest="$LAST_BACKUP" --exclude-from="$EXCLUDE" --files-from="$INPUTS" / "$BACKUP_DIR" --ignore-missing-args >> "$HOME/.simple_backup/simple_backup.log" 2>> "$HOME/.simple_backup/errors.log"
-fi
-
-#Update the logs
-if [[ -f $HOME/.simple_backup/errors.log && $(cat $HOME/.simple_backup/errors.log | wc -l) -gt 0 ]]; then
-   echo "$(date): Backup finished with errors" >> $HOME/.simple_backup/simple_backup.log
-   error_flag=1
-elif [[ -f $HOME/.simple_backup/warnings.log && $(cat $HOME/.simple_backup/warnings.log | wc -l) -gt 0 ]]; then
-   echo "$(date): Backup finished with warnings" >> $HOME/.simple_backup/simple_backup.log
-   error_flag=2
-else
-   echo "$(date): Backup finished" >> $HOME/.simple_backup/simple_backup.log
-   error_flag=0
-fi
-
-if [[ ! -z "$EXCLUDE" ]]; then
-   rm "$EXCLUDE"
-fi
-
-if [[ ! -z "$INPUTS" ]]; then
-   rm "$INPUTS"
-fi
-
-if [[ -L "$BACKUP_DEV/simple_backup/last_backup" ]]; then
-   rm "$BACKUP_DEV/simple_backup/last_backup"
-fi
-
-BACKUP_DIR_FULL=$(readlink -f "$BACKUP_DIR")
-ln -sf "$BACKUP_DIR_FULL" "$BACKUP_DEV/simple_backup/last_backup"
-
-if [[ $error_flag -eq 0 ]]; then
-   ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup finished"
-elif [[ $error_flag -eq 1 ]]; then
-   ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup finished (errors)"
-else
-   ! command -v notify-send > /dev/null 2>&1 || DISPLAY=:0.0 notify-send -u low -t 10000 "Backup finished (warnings)"
-fi
-
-if [[ -f $HOME/.simple_backup/simple_backup.log.old ]]; then
-   rm -f $HOME/.simple_backup/simple_backup.log.old
-fi
-
-if [[ -f $HOME/.simple_backup/errors.log.old ]]; then
-   rm -f $HOME/.simple_backup/errors.log.old
-fi
-
-if [[ -f $HOME/.simple_backup/warnings.log.old ]]; then
-   rm -f $HOME/.simple_backup/warnings.log.old
-fi
-
-exit 0