If you want it extra pedantic, you can add -checksum, that will checksum all files instead of just using the timestamp for skipping.

This script uses -one-file-system, so it doesn't cross file system borders and it uses -relative to get the absolute path names preserved. This gives you a copy in /backup/root/ and a backup of all changed or deleted files in /backup/incr/$DATE-$NUM. Rsync $RSYNCOPTS $EXCLUDES-backup -backup-dir='$BACKUPINCR' '$i' '$BACKUPROOT' # Make sure we use a new incr backup directory on each run RSYNCOPTS='-e ssh -delete -one-file-system -relative -archive -P -verbose -compress -recursive'īACKUPINCR='$/incr/$(date -I)'ĮXCLUDES='-exclude-from /home/juser/.backup-excludes' As with backup you want to keep track of changes, instead of just overwrite them. When using rsync for backup the most import options to have a look at are -backup and -backup-dir, without those you are doing a copy, not backup. If anything here isn't clear to you, just ask. If you want timestamped backups, you can experiment with the date command. (if your share is open, you can leave off user and password) If your NAS doesn't support rsync as a service then I think it should work if you change the start to this: #!/bin/sh This will write logs in ~/logs so make sure that directory exists, or put them somewhere else) First column is minutes, so 3am is 0 3 * * *. ( 0 0 * * * means: run at midnight every day, every month. Run crontab -e and add this line: 0 0 * * * $HOME/bin/backup.sh > $HOME/logs/backup.log 2>&1 If you save that as, say, ~/bin/backup.sh (and be sure to do chmod a+x ~/bin/backup.sh) then you can run it nighly using cron. You'll need to change DEST to the IP address of your NAS, and change paths and stuff to suit. usr/bin/rsync $RSYNC_OPTS -exclude 'Virtual Machines*' ~/Documents $DEST

usr/bin/rsync $RSYNC_OPTS -exclude 'build/' -exclude 'dist/' -exclude '*.pyc' ~/code $DEST If so, you can do something like this: #!/bin/sh

Does your NAS have an rsync service set up? Some support it (e.g.

Best way to backup mac to synology