Creates a user on a linux system using the first command line arg, sets a temporary password, and adds them to the root and Docker groups.

create_user.sh

#!/bin/bash


# Ensure that script is being run as root.
if [[ $EUID -ne 0 ]]; then
        echo "This script must be run as root!"
        exit 1
fi

# Getting username from cmd line
username=$1

# Creating a new user from username
echo "Creating a new user with name: $username"
echo "Type the following as the temporary password: <TEMP_PASS_HERE>"
adduser $username

# force user to change their password upon login
chage -d 0 $username

# Adding user to sudo group
usermod -aG sudo $username

# Adding user to dockergroup
usermod -aG docker $username

echo "Please ensure that $username is in the appropriate groups:"
groups $username