Adding and Deleting Users

Adding and Deleting Users Using a Bash Script

Use this script to Add and Delete Users

AddingDeletingUsers.sh  (Downloads)

Script Author : Paul Coletti & Anthony Brooks

#!/bin/bash
#-------------------------------------------------------------------------------#
#                                                      #
#                                Adding and Deleting Users                #
#                                   #
#------------------------------------------------------------------------------#
#This section of the script is where users are added to the system either manually or from a text file.

cr_usrs()
{
    r_uid=0      #This will show that the root user will have a UID of 0
    if      [ "$r_uid" -ne 0 ];
        then
            echo "You must verify yourself as the root user to run this script!"
            exit
    fi

    if    [ "$r_uid" == 0 ];
        then
        echo "Identity confirmed"
    fi

    echo "==================================================="
    echo "    Please select an option:

    1. Create a user
    2. Exit"
    echo "==================================================="

    read cr_option
    case $cr_option in

    1)

        echo "Please enter a User name:"
        read usr_nme

        echo "Please enter a User Group"
        read usr_grp
        groupadd $usr_grp
               useradd -g $usr_grp -m $usr_nme

        echo "Please enter a Password for the User $usr_nme"
         passwd $usr_nme ;;

    2)    exit

esac
}
#-------------------------------------------------------------------------------------------
#This section of the script will delete the users from the home directory

dl_usrs()
{
    r_uid=0      #The root user has a UID of 0

    if      [ "$r_uid" -ne 0 ];
        then
            echo "You must verify yourself as the root user to run this script!"
            exit
    fi

    if    [ "$r_uid" == 0 ];
        then
        echo "Identity confirmed"
    fi


#This is the Menu to select an option to delete the users, you can either delete a selected user or delete all the users you have in the 'user_file' text file.

    echo "============================================"
    echo "Please select an option:

       1.Delete a certain user
       2 Exit"
    echo "============================================"

    read del_opt
    case $del_opt in

    1)
        echo "You currently have the following Users added to your system"
        cat /etc/passwd | grep user #This will search the /etc/passwd file for users
        echo "Type the name of the User you want to delete: "
        read user_name
        userdel -r $user_name ;;

    2)    exit

esac
}

#-----------------------------------------------------------------------------------------
#This section of the script is where user accounts on the system are verified either on the whole system or the users that are present in the text file."

cnfrm_usrs()
{
echo    "============================================"
echo    "    Please Select the Mode:

    1. Confirm all the Users of the System
    2. Exit"
echo    "============================================"

    read confirm_user
    case $confirm_user in
    1) cat /etc/passwd | grep bash;;

    2) exit

esac
}

#---------------------------------------------------------------------------
#This section of the script is the menu system that the script operates from.

main_menu()
{
choice=1
    while [ $choice -le 4 ]
    do
    clear
    echo "======= Main Menu =======

    1. Add Users
    2. Confirm Users
    3. Delete Users
    4. EXIT"

read choice
case $choice in

    1) cr_usrs ;;
    2) cnfrm_usrs ;;
    3) dl_usrs ;;
    4) exit 0 ;;
    *) echo "You have selected an invalid choice."
esac

echo "Would you like to run the script again? Yes=1 & No=4."
read choice
done
}
main_menu
exit 0

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Author: mustafa_h

Version: 1.3

Last Edited By: mustafa_h

Modified: 06 Apr 2010