49.1. Unix User/Group Infrastructure

Unix users are given unique usernames and also added to one or more Unix groups (Section 49.7). Both a user and a group own all content within a system. If you list information about a file, you'll see both user and group ownership:

> ls -l
-rw-r--r--  1 root      weblog.burningbi  32230 May 22 13:58 access_log
-rw-r-----  1 shelleyp  weblog.burningbi   3995 May 12 11:08 analog.cfg
-rw-r--r--  1 root      weblog.burningbi      0 May 22 12:01 error_log