Linux Command Line - nothing it's impossible by command line!

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Version
Linux Command Line
version 1.4
Last modified date: 2009-07-03
Created Date: 2008-01-06

Linux Command Line: Users and Groups

View the commands list divided into arguments

Command	Description
# chage -E 2005-12-31 user1	set deadline for user password [man]
# groupadd [group]	create a new group [man]
# groupdel [group]	delete a group [man]
# groupmod -n moon sun	rename a group from moon to sun [man]
# grpck	check correct syntax and file format of '/etc/group' and groups existence [man]
# newgrp - [group]	log into a new group to change default group of newly created files [man]
# passwd	change password [man]
# passwd user1	change a user password (only by root) [man]
# pwck	check correct syntax and file format of '/etc/passwd' and users existence [man]
# useradd -c "User Linux" -g admin -d /home/user1 -s /bin/bash user1	create a new user "user1" belongs "admin" group [man]
# useradd user1	create a new user [man]
# userdel -r user1	delete a user ( '-r' eliminates home directory) [man]
# usermod -c "User FTP" -g system -d /ftp/user1 -s /bin/nologin user1	change user attributes [man]