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UID of user accounts on *nix systems

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# 1  
Old 05-09-2013
UID of user accounts on *nix systems
Hi,
As the /etc/passwd file contents all system and other users accounts on a linux/unix system, can anyone tell me what is the User ID values range for human user accounts (not system user accounts) on a linux (Red Hat/SuSE etc) and Unix (Solaris) OS.

I heard below number 100, all users are system users on a linux system. Is it same for unix systems?

thanks in advance,
Smilie
# 2  
Old 05-09-2013
In Linux, the range is between UID_MIN and UID_MAX as defined in /etc/login.defs.

In AIX you have /etc/security/.ids which is not as user-friendly as login.defs but you can edit it if you really need to; The second field represents the next available UID for standard accounts.

In Solaris there isn't tunable for this, as far as I know (besides limits.h). UIDs are sequentially chosen using the highest UID in /etc/passwd plus 1.

There isn't any standard for this, unfortunately.
# 3  
Old 05-10-2013
Quote:
Originally Posted by sanzee007
I heard below number 100, all users are system users on a linux system. Is it same for unix systems?
That was true eons ago. Then for a long time it was 500 but recently it was upped to 1000.
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