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: curl --head www.yahoo.com

A live response returns status, cookies, content length, etc.

To return the entire page: curl www.google.com

The view the man page:  curl --manual | less

To retrieve data with POST: curl -d "name=dpw" www.google.com

Related programs: wget