root.sh

#!/usr/bin/env bash
cd ; date ; set +vx  ; set -vx ; # echo off, then echo on
set +vx
#

echo ~----------~----------Startingb $HOSTNAME, pwd: `pwd`, "${BASH_SOURCE[0]}" $(date +" %Y-%m-%d_%H.%M.%S")
# https://stackoverflow.com/questions/8911724/how-to-find-out-name-of-script-called-sourced-by-another-script-in-bash
echo "from file.... ${BASH_SOURCE[0]}"
echo "${BASH_SOURCE[@]}"  # echo full bashsource array

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#clear
# check for root privilege
if [ "$(id -u)" != "0" ]; then
   echo " This script must be run as root." 1>&2
   echo '    You are not root. Exiting...'
   exit 1; exit 1; exit 1; exit 1; exit 1
fi
echo You are root, continuing..

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~