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Top Forums Shell Programming and Scripting Help Linux Shell Group exists Post 302621321 by kingkner on Tuesday 10th of April 2012 08:29:06 AM
Old 04-10-2012
Quote:
Originally Posted by fpmurphy
Are you trying to see if a group already exists? If so, try this:
Code:
read -p "enter group name: " group
if grep -q $group /etc/group
then
   echo "group exits"
else
   echo "group not exits"
fi

thank sir. this's answers that I need
 

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GROUPADD(8)						    BSD System Manager's Manual 					       GROUPADD(8)

NAME
groupadd -- add a group to the system SYNOPSIS
groupadd [-ov] [-g gid] [-r lowgid..highgid] group DESCRIPTION
The groupadd utility adds a group to the system. See group(8) for more information about EXTENSIONS. The options are as follows: -g gid Give the numeric group identifier to be used for the new group. -o Allow the new group to have a gid which is already in use for another group. -r lowgid..highgid Set the low and high bounds of a gid range for new groups. A new group can only be created if there are gids which can be assigned inside the range. This option is included if built with EXTENSIONS. -v Enable verbose mode - explain the commands as they are executed. This option is included if built with EXTENSIONS. EXIT STATUS
The groupadd utility exits 0 on success, and >0 if an error occurs. SEE ALSO
group(5), group(8), user(8) HISTORY
The groupadd utility first appeared in NetBSD 1.5. It is based on the addnerd package by the same author. AUTHORS
The groupadd utility was written by Alistair G. Crooks <agc@NetBSD.org>. BSD
November 7, 2005 BSD
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