CURL - saving multiple HTTP responses

Question

I've learned that we can send multiple HTTP requests with CURL by doing this:

curl -I http://linuxbyexample.co.nr http://lne.blogdns.com/lbe

or this:

xargs curl -I < url-list.txt

How can we save the all responses we get - every one of them to a different file?

Answer 1

You can use the -o command line option to write the output to a file instead of stdout. You can use multiple -os e.g.

curl -I http://linuxbyexample.co.nr lbe.co.nr.txt http://lne.blogdns.com/lbe -o lne.txt

If you format you urls-list.txt like so

http://serverfault.com -o serverfault.com.txt
http://example.com -o example.com.txt

it should work as you want.

Answer 2

$ cat urls-list.txt 
http://linuxbyexample.co.nr 
http://lne.blogdns.com/lbe

$ while read u; do \
    curl -I $u -o $(echo $u | sed 's/http:\/\///' | tr '/' '_').header; \
done < urls-list.txt

$ cat linuxbyexample.co.nr.header 
HTTP/1.1 200 OK
Date: Thu, 24 Nov 2011 03:15:19 GMT
Server: LiteSpeed
Connection: close
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Content-Type: text/html
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