i use -z command the backup works but it does not compress Rsync –abuz home/terrijst/terrijst/”Company Shared Folders”/ /media/sda1/backup/companie
I think you probably mean that the destination files weren't compressed, which is not what this option does. I just checked the man page, and it is not clear at all what data the -z option is affecting (which is just the over-the-wire data), so I'll fix that. If I'm wrong about what you meant to report, feel free to reopen the bug.