Well if it's a .tar or .tar.gz or another compressed file, you can use file-roller. I advice you to work with Sbackup or timevualt this backupprograms have a better development.
Well if it's a .tar or .tar.gz or another compressed file, you can use file-roller. I advice you to work with Sbackup or timevualt this backupprograms have a better development.