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There's this useful command that gets information about a server when you pass it a url that's pointed at the server in question.

I can't remember it though, or find it. It gets the OS of the server, the webserver installed on it and more useful information. I think it might be curl, but what options should I pass it?

Is there an app I can apt-get that will provide even more information about a url that isn't offered by this native application I can't find?

I'm trying to scan a server for ports and that sort of thing. Just want a breif overview. It wasn't nmap. It instantly returned

Webserver :
OS :

Information like that.

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  • what type of information I wonder ?
    – Raja G
    Nov 15, 2013 at 0:48

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wget -qS -O- http://www.website.tld:portnumber will deliver the information to you directly for you to analyze and nmap will inspect the headers coming from a server with the command nmap -A -T4 www.website.tld (replace website.tld with the website you wish to study) and try to guess at what's running there. curl is less forthcoming, but if you do curl http://192.168.1.2:portnumber the last line returned will tell you which protocol a port expects.

The sysadmin of that site can block or provide misleading information, though, to make it tougher for script kiddies to perform attacks-from-a-can.

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