FG

How can I check which ports are busy and which ports are free on my Linux machine?

Fresh3 days ago
Mar 15, 2026215390 views
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Problem

Is there any command line command or any other way to find and list out the busy and free port numbers on my Linux machine?

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1 Fix

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Fix for: How can I check which ports are busy and which ports are free on my Linux machine?

Low Risk

The command will show all tcp and udp ports in use. The output will look something like this: The number after the colon in the Local Address field shows the port in use. If the state is "LISTEN" it means a port that is using for incoming connection…

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