Exemplo com curl/wget + while read

gistfile1.txt

$ cat url.txt 
http://www.google.com?a=b&c=d

$ while read linha ; do curl -vs $linha >&- ; done < url.txt 
* About to connect() to www.google.com port 80 (#0)
*   Trying 74.125.229.212... connected
* Connected to www.google.com (74.125.229.212) port 80 (#0)
> GET /?a=b&c=d HTTP/1.1
> User-Agent: curl/7.19.7 (universal-apple-darwin10.0) libcurl/7.19.7 OpenSSL/0.9.8r zlib/1.2.3
> Host: www.google.com
> Accept: */*
> 
< HTTP/1.1 200 OK
< Date: Thu, 06 Sep 2012 13:39:19 GMT
< Expires: -1
< Cache-Control: private, max-age=0
< Content-Type: text/html; charset=ISO-8859-1
< Set-Cookie: PREF=ID=40352fd9d14bc043:FF=0:TM=1346938759:LM=1346938759:S=UN3jayNdsPOiQRIG; expires=Sat, 06-Sep-2014 13:39:19 GMT; path=/; domain=.google.com
< Set-Cookie: NID=63=MH0vW75ZpRwn6qMqiv0pjHjvYW7rwiNM29tV2oJ6YBsDBIkl9ereGJq-WlxlUQglKGW8hpoevDODnXypPeULB2_ZzjNvVumN8fMSaLWI4CGAg9GpViJ1qgMVfttARF96; expires=Fri, 08-Mar-2013 13:39:19 GMT; path=/; domain=.google.com; HttpOnly
< P3P: CP="This is not a P3P policy! See http://www.google.com/support/accounts/bin/answer.py?hl=en&answer=151657 for more info."
< Server: gws
< X-XSS-Protection: 1; mode=block
< X-Frame-Options: SAMEORIGIN
< Transfer-Encoding: chunked
< 
{ [data not shown]
* Connection #0 to host www.google.com left intact
* Closing connection #0