Adds a user with key and home dir

useradd_hack.sh

#!/bin/bash

EXPECTED=1

if [ $# -ne $EXPECTED ]
then
  echo "Please provide a username argument."
  exit 5 
fi

USER=$1

useradd $USER -m
mkdir /home/$USER/.ssh

# hard coded key or upload a file
#echo "< the pub key >" >> /home/$USER/.ssh/authorized_keys
cat /root/pub_key.tmp >> /home/$USER/.ssh/authorized_keys

chown -R $USER:$USER /home/$USER/.ssh
chmod 700 /home/$USER/.ssh
chmod 600 /home/$USER/.ssh/*

exit