Instead of writing my own script for backing up my OTRS installation i found a neat solution in the manual:
admin@support:~$ mkdir ~/otrsbackup admin@support:~$ /opt/otrs/script/backup.pl -d ~/otrsbackup Backup /home/entw/otrsbackup/2014-08-20_16-51/Config.tar.gz ... done Backup /home/entw/otrsbackup/2014-08-20_16-51/Application.tar.gz ... done Dump MySQL rdbms ... done Compress SQL-file... done admin@support:~/otrsbackup$ tree -A . . +-- 2014-08-20_16-51 +-- Application.tar.gz +-- Config.tar.gz +-- DatabaseBackup.sql.gz 1 directory, 3 files