#!/bin/bash

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# create new system user / frode klevstul / oct 2025
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

if [ "$EUID" -ne 0 ]
  then echo "error: run as 'root'"
  exit
fi

this_file_name=`basename "$0"`

if [ $# -ne 1 ]; then
    echo usage: ${this_file_name} [USERNAME]
    exit 1
fi

username=$1

# ---
# create a new non-root user
# ---
adduser --disabled-password --gecos "" ${username}
mkdir /home/${username}/.ssh
cp /root/.ssh/authorized_keys /home/${username}/.ssh/
chown ${username}:${username} /home/${username}/.ssh/
chown ${username}:${username} /home/${username}/.ssh/authorized_keys