GNU/Linux is a multiuser operating system allowing many users to log in and perform several activities at the same time. There are several administration tasks that are handled with user management, which include setting the default shell for the user, disabling a user account, disabling a shell account, adding new users, removing users, setting a password, setting an expiry date for a user account, and so on. This recipe aims at writing a user management tool that can handle all of these tasks.
Let's go through the user administration script:
#!/bin/bash
#Filename: user_adm.sh
#Description: A user administration tool
function usage()
{
echo Usage:
echo Add a new user
echo $0 -adduser username password
echo
echo Remove an existing user
echo $0 -deluser username
echo
echo Set the default shell for the user
echo $0 -shell username SHELL_PATH
echo
echo Suspend a user account
echo $0 -disable username
echo
echo Enable a suspended...