Using some output redirection and the --write-out parameter we can produce a script that simply outputs the status code of a curl request.
This script can then be used as the basis for a simple monitoring of a URL.
#! /bin/bash
# Description: Returns the HTTP response code obtained by curl on the URL using the specified HTTP method
# Usage: script.sh GET https://example.org
# Usage: scripts.sh POST https://example.org
# Author: marco@kamner.eu
METHOD=$1
URL=$2
curl --silent --output /dev/null --write-out "%{http_code}" --request $METHOD $URL
This script can easily be adapted to output other information
using the variables available to --write-out.