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Old 02-12-2008, 02:14 PM   #1
devenix
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Registered: Jul 2007
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what are default user and group accounts in the linux system used for?


Hi all,

sorry if this question was answered earlier , but i want to no why are default linux , unix accounts used for , or are they useless.

sys:x:3:3:sys:/dev:/bin/sh
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/bin/sh
man:x:6:12:man:/var/cache/man:/bin/sh
lp:x:7:7:lp:/var/spool/lpd:/bin/sh
mail:x:8:8:mail:/var/mail:/bin/sh
news:x:9:9:news:/var/spool/news:/bin/sh
uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
proxy:x:13:13roxy:/bin:/bin/sh

please help me with this question?
 
Old 02-12-2008, 03:32 PM   #2
PatrickNew
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Registered: Jan 2006
Location: Charleston, SC, USA
Distribution: Debian, Gentoo, Ubuntu, RHEL
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It's primarily for security reasons. Most of these correspond to a daemon, or a process that runs in the background. For example 'lp' is the printer daemon. It needs to have access to printer-related things, but it doesn't need access to (for example) my home directory. So, the admin sets up a user named lp which only has access to those things.

In a way, you could consider them useless because you, as a user, will never log in to any of these accounts. Their use is completely automated.
 
  


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