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wget 
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wget is the standard Unix tool to get files from other sites. "curl" is 
the upgraded version.

	#get file from URL, saved file has same name as file on web
$ wget http://www.astro.caltech.edu/~srk/srk.plan.php

simple flags:
 -o filename #save output to a specific filename
 -q          # completely suppress monitoring messages
 -nv         #  suppress most most but not all monitoring messages

$ wget http://www.astro.caltech.edu/~srk/srk.plan.php -O SRK.PHP
$ wget -q http://www.astro.caltech.edu/~srk/srk.plan.php