bash function to ensure that the script is run with root privileges

bash-function-forceRoot.sh

#!/bin/bash -eu
# author: Nathanael Gandhi
# github.com/NathanaelGandhi

# If the user is not root, it performs the following actions:
#    1. It assigns the absolute path of the currently running script to the variable exe_name using the readlink -f command. This ensures that exe_name contains the full path of the script even if it was executed using a relative path.
#    2. It then uses sudo to execute the script again as root, passing the same script path ($exe_name) and any command-line arguments ($@) to it.
#    3. Finally, it exits the current instance of the script with the same exit code ($?) as the root-executed script.
# In summary, this code snippet is designed to ensure that the script is run with root privileges. If it's not being run as root, it will re-execute itself using sudo to gain the necessary privileges.

################################################################################
# force root-execution of the script                                           #
################################################################################
function forceRootExecution()
{
  if [[ ! "$USER" == "root" ]] ; then
    echo " • Forcing root execution"
    exe_name="$(readlink -f -- "$0")"
    sudo "$exe_name" "$@"
    exit $?
  fi
}