Determine which process is listening on a TCP port in Linux

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Determine which process is listening on a TCP port in Linux

Submitted by alex on Mon, 03/01/2010 - 15:31.

Note to self...

[root@rhel5-oracle ~]$ lsof -i tcp:1521 -nP

COMMAND  PID   USER   FD   TYPE DEVICE SIZE NODE NAME

tnslsnr 5640 oracle   10u  IPv4  11104       TCP *:1521 (LISTEN)

tnslsnr 5640 oracle   12u  IPv4  11424       TCP 127.0.0.1:1521->127.0.0.1:10948 (ESTABLISHED)

oracle  5742 oracle   16u  IPv4  11423       TCP 127.0.0.1:10948->127.0.0.1:1521 (ESTABLISHED)

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Determine which process is listening on a TCP port in Linux

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