#!/usr/bin/env bash

OUT=$(echo "ls" | lftp -u test_ftp,test_ftp eldiron.immae.eu | grep it_works | wc -l)

if [ "$OUT" -eq 1 ]; then
  echo "ftp connection OK - access to ftp is working"
  exit 0
else
  echo "ftp connection CRITICAL - no access to ftp"
  exit 2
fi