Downloading the check_url.pl plugin

1. Change to the nagios plugin directory:

   cd /usr/local/nagios/libexec/

2. Download the check_url.pl plugin:

   sudo wget -O check_url.pl "https://exchange.nagios.org/components/com_mtree/attachment.php?link_id=1395&cf_id=24"

3. Make the plugin executable:

   sudo chmod 755 check_url.pl

4. Update the file check_url.pl to replace all tmp_ with /tmp/tmp_ text (i.e. if you are using vi for editing using the following:)

   %s#tmp_#/tmp/tmp_#g

Testing The Plugin

/usr/local/nagios/libexec/check_url.pl https://www.google.com

Expect to see the following output:

OK: 200  OK

Displaying the Help

/usr/local/nagios/libexec/check_url.pl -h