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Top Forums UNIX for Dummies Questions & Answers How to find All Primary and Secondary Group ID's for a user Post 18314 by sanjay92 on Wednesday 27th of March 2002 01:35:06 AM
Old 03-27-2002
Bug

Thanks !
I always looked in the default id command and I did not look in the options.
This will work for me.

Sanjay

Quote:
Originally posted by killerserv
Have you try the id command ?

id [-gnruG] [--group] [--name] [--real] [--user] [--groups] [--help] [--version] [username]

By default, it prints the real user ID, real group ID, effective user ID if different from the real user ID, effective group ID if dif ferent from the real group ID, and supplemental group IDs. It prints each of these values preceded by a string identifying it and followed by the corresponding user or group name in parentheses. Post back if this doesnt help..
sanjay92
 

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SETREGID(2)						      BSD System Calls Manual						       SETREGID(2)

NAME
setregid -- set real and effective group ID LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <unistd.h> int setregid(gid_t rgid, gid_t egid); DESCRIPTION
The real and effective group ID's of the current process are set to the arguments. If the real group ID is changed, the saved group ID is changed to the new value of the effective group ID. Unprivileged users may change the real group ID to the effective group ID and vice-versa; only the super-user may make other changes. Supplying a value of -1 for either the real or effective group ID forces the system to substitute the current ID in place of the -1 argument. The setregid() system call was intended to allow swapping the real and effective group IDs in set-group-ID programs to temporarily relinquish the set-group-ID value. This system call did not work correctly, and its purpose is now better served by the use of the setegid(2) system call. When setting the real and effective group IDs to the same value, the standard setgid() system call is preferred. RETURN VALUES
The setregid() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indi- cate the error. ERRORS
[EPERM] The current process is not the super-user and a change other than changing the effective group-id to the real group-id was specified. SEE ALSO
getgid(2), issetugid(2), setegid(2), setgid(2), setuid(2) HISTORY
The setregid() system call appeared in 4.2BSD. BSD
April 16, 1994 BSD

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