#!/bin/bash
# Script to add a user to Linux system

if [ $(id -u) -eq 0 ]; then
    read -p "Enter username : " username
    read -p "Enter password : " password

    grep "^$username" /etc/passwd >/dev/null
    if [ $? -eq 0 ]; then
        echo "$username already exists!"

    else
        pass=$(perl -e 'print crypt($ARGV[0], "password")'$password)
        useradd -p $pass $username

        if [ $? -eq 0 ] ; then
            echo "User $username has been added to system”
        else
          echo "Failed to add user $username"
        fi