bash function for ensuring bash version meets a certain minimum

bash_check_version.sh

# Ensures the shell meets some minimum version, useful when using bash features introduced after a certain release
check_version() {
  local reqMajor="$1"
  local reqMinor="$2"
  local major minor
  IFS=. read -r major minor _ <<< "$BASH_VERSION"
  if (( major < reqMajor )) || (( major == reqMajor && minor < reqMinor)); then
    echo "Bash version $reqMajor.$reqMinor or greater required, found $major.$minor" >&2
    return 1
  fi
}