kurybr

#!/bin/bash

# https://www.shellhacks.com/ru/bash-test-if-file-exists/
# https://habr.com/ru/company/ruvds/blog/325928/
# http://qaru.site/questions/41427/how-to-check-if-a-file-contains-a-specific-string-using-bash

# http://blog.richim.org/2011/10/bash.html
# Check the script is being run by root
if [ "$(id -u)" != "0" ]; then
  echo "This script must be run as root"