05-29-2013
Step 1: Cut the i/o in half by eliminating the unnecessary cat.
Step 2: Eliminate the for-loop and replace it with a single call to printf.
Step 3: Don't use gawk unless you must. It's the slowest awk implementation.
Regards,
Alister
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LEARN ABOUT CENTOS
lgroupmod
lgroupmod(1) General Commands Manual lgroupmod(1)
NAME
lgroupmod - Modify an user group
SYNOPSIS
lgroupmod [OPTION]... group
DESCRIPTION
Modifies the user group with name group.
OPTIONS
-A, --admin-add=list
Add users in comma-separated list among group's administrators.
-a, --admin-remove=list
Remove users in comma-separated list from group's administrators. Removing users that are not currently among group's administra-
tors silently succeeds.
-g, --gid=gid
Change group's group ID to gid.
-i, --interactive
Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration.
-L, --lock
Lock group. This prevents users from using the group password with newgrp(1) to become a member of group.
-M, --member-add=list
Add users in comma-separated list among group's members.
-m, --member-remove=list
Remove users in comma-separated list from group's members. Removing users that are not currently among group's members silently
succeeds.
-n, --name=name
Rename group to name.
-P, --plainpassword=password
Set group's password to password. Note that the password can be viewed while running lgroupmod using tools such as ps(1).
-p, --password=encrypted
Set group's password to the password represented by the hash encrypted. Note that the hash can be viewed while running lgroupmod
using tools such as ps(1).
-U, --unlock
Unlock group.
EXIT STATUS
The exit status is 0 on success, nonzero on error.
libuser Jan 11 2005 lgroupmod(1)