Linux command: rsync

Create local backups

rsync -av --delete /Directory1/ /Directory2/

The code above will synchronize the contents of Directory1 to Directory2, and leave no differences between the two.
If rsync finds that Directory2 has a file that Directory1 does not, it will delete it.
If rsync finds a file that has been changed, created, or deleted in Directory1, it will reflect those same changes to Directory2.

1. -a = recurse into directories, links (copy symlinks as symlinks), perms (preserve permissions), times (preserve modification times), group (preserve group), owner (preserve owner), preserve device files, and preserve special files.
2. -v = verbose. You can see exactly what rsync is backing up. backups.
3. –delete = This tells rsync to delete any files that are in Directory2 that aren’t in Directory1.

Remote backups

rsync -av –delete -e ssh /Directory1/ geek@192.168.235.137:/Directory2/

or with password and port settings:

rsync -av –delete -e 'ssh -p 12345' /Directory1/ geek@192.168.235.137:/Directory2/