Groups
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Groups

Group is named list of users.

To create a new group "office" you can use command 

groupadd office

System groups

GNU/Linux file tree also contain files which located on virtual filesystems. This files can represent devices or contain data which recieved from kernel. To control access to this files a system groups are used:

  • audio - users who are members of this group can get access to sound cards
  • cups - users who are members of this group can get access to printers

To get information about file-object permission, ls command can be used

ls -l %path_to_file%
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