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I am looking for a non-deprecated way of running a command like netstat -tulpn | grep 8000 to output information about an active port. Any suggestions on how to use a tool like ss to get the process id?

I have a localhost running on port 8000, but ss -a | grep 8000 does not output anything. Running fuser 8000/tcp outputs the port's process, as does netstat -tulpn | grep 8000. Why doesn't the ss command output anything about my port?

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  • Does ss -na | grep 8000 output something ? What kind of information would you like to retrieve about an active port ?
    – krisFR
    May 20, 2015 at 9:39
  • Thanks! The n flag was key, although it is very subtle. I was just trying to get the process number.
    – modulitos
    May 20, 2015 at 10:33

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You can use lsof with the -i option. IE: lsof -i:80 for view what's listening on port 80.

Also you can use ss -tlpn to view all processes listening for ports.

Regards

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