http://exchange.nagios.org/directory/Plugins/Network-Protocols/HTTP/check_http_proxy/details

$ check_http_proxy.py --proxy=proxy:port --auth=user:pass --url=url \
  --timeout=10.5 --warntime=5.0 --expect=content

define command{
        command_name    check_http_proxy
        command_line    /etc/nagios2/mysite-bin/check_http_proxy.py \
  "--proxy=$ARG1$" "--auth=$ARG2$" "--warntime=$ARG3$" "--expect=$ARG4$" \
  "--url=$ARG5$"
}



http://exchange.nagios.org/directory/Plugins/Websites%2C-Forms-and-Transactions/check_www/details

commands.cfg:

define command{
command_name check_www
command_line /usr/local/libexec/nagios/check_www.php $ARG1$
}

services.cfg:

define service{
use default-critical
host_name webserver
contact_groups it-department
service_description Website: www.example.org
check_command check_www!www.example.org
}



http://exchange.nagios.org/directory/Plugins/Websites%2C-Forms-and-Transactions/check_webpage-2Esh/details

check_webpage.sh by gascon.leon AT gmail.com uses WGET + TEMPFS, 500+ lines!
(quite configurable with a number of command line options, written for BASH)



http://exchange.nagios.org/directory/Plugins/Network-Protocols/HTTP/check_http-perl-script-with-additional-features-%28modified-to-work-with-groundwork%29/details

Written in Perl, many command line options and nice command line help :-)

Default: HTTP 2xx expected, 3xx warn, 4xx critical, 5xx critical,
or use 0 or more -w and -c options to put categorize http codes
as "triggers warning state" / "triggers critical state". Can also
use regexp which trigger states based on content of the webpage.