The program lies within System Tools, more precisely General.
From the developer:
xbGUI is a GUI wrapper for a few Unix commands. Currently, these commands are: ditto : Backup files (Maybe the most interresting) ls : Display files and folders. cat : display content of files and allow to catenates them. df : Display h&ard drives free space. ln : Manage file links cp : copy files rm : Remove files chmod : Change files access rights chown : change files owner ps : Display process informations