how to check open ports of bunch of website at once with nmap/linux?

Posted by austin powers on Server Fault See other posts from Server Fault or by austin powers
Published on 2010-05-12T04:17:55Z Indexed on 2010/05/12 4:25 UTC
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nmap

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pipe

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linux

hi , I want to use nmap in such a way that I could check bunch of server's port at once for checking whether their particular port is open or not? right now I have 10 ip addresses but in future this could be more . I know the very basic command in linux like cat/nano/piping but I don't know how can I feed to nmap the list of my servers to open them one by one and return the result.

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