Linux Command Directory
This directory of Linux commands is from Linux in a Nutshell, 5th Edition.
Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.
Change user's group ID to the specified group. If no group is specified, change to the user's login group. The new group is then used for checking permissions.