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Keeping Linux File Systems Clean

Apr 19, 2010, 13:02 (0 Talkback[s])
(Other stories by Jamie Adams)

"SYSTEM ADMINISTRATORS ROUTINELY "CLEAN" their file systems by removing unused files and organizing files into directories. The term "clean" is also associated with performing file system checks to ensure structural integrity with tools such as fsck.ext3(8). In addition to these critical activities, you should routinely "clean" file system access controls — ownerships and permissions.

"Unowned Files and Directories

"An unowned file or directory is one in which no owner or group has been assigned. All accounts and group have a numerical identifier associated with them — referred to as the user identifier (uid) and group identifier (gid).

"For example, I have an account called darth (uid=502) and it belongs to two groups: darth (gid=502) and vader (gid=503). I created the file /tmp/deathstar which is owned by darth and assigned group vader:"

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