cheat sheets.

Command line internet/network loader tool and ajax test tool.  Read the contents
of a URL, dump the results to the stdout.  Basic USE:

curl [options] [URL...]

To see if a site is alive, just get the headers, e.g.:

curl --head www.yahoo.com

A live response should return "200 Ok" on the first line, cookies, content
length, etc.

To return the entire page
curl www.google.com

Related programs: wget,