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Linux tool for backing up data to a remote server using rsync.

1. Ensure that ssh keys are properly set up between local and remote hosts.
2. Create a backup directory called e.g. backup in your home directory.
3. Copy the backup script to backup directory.
4. Create directories you want to backup in the backup directory. In case you have already directories in other places, moving them to backup directory and symlinking to original locations might be a convenient solution.
5. Copy sample configuration file .backup to backup directory and set correct remote host credentials and backup file list there.

The simplest way to use this tool is to manually execute backup when needed. This is done as follows:

$ cd ~/backup
$ ./backup

Files are restored in the following way:

$ cd ~/backup
$ ./backup restore

Backups can be automated using a systemd timer. For example, configuration in systemd user mode is done as follows:

1. Copy systemd service and timer:

    $ cp systemd/* ~/.config/systemd/user/
    $ sudo systemctl --user enable oturpe-backup.timer
   

2. Edit copied oturpe-backup.service file and set parameters WorkingDirectory and Exec to match the backup directory.

3. Reload systemd daemon and enable timer:

    $ systemctl --user daemon-reload
    $ systemctl --user enable oturpe-backup.timer
   

4. Check that the timer is running:

    $ systemctl --user status oturpe-backup.timer
    ● oturpe-backup.timer - Backup personal files daily
      Loaded: loaded (/home/otto/.config/systemd/user/oturpe-backup.timer; enabled;
      Active: active (waiting) since su 2017-06-04 12:30:05 CEST; 30min ago
    
    kesä 04 12:30:05 ottovain systemd[1525]: Started Backup personal files daily