April 4, 2023

Kill a Stray Process on Linux Using `lsof`

Sometimes local servers get naughty and fail to exit with a signal. They end up occupying a port, and that isn't very pleasant. Here's how to kill them using lsof.

#linux

· 1-minute read

Find out what process is running on the port:
Terminal window
```
lsof -i:<port>
```
Copy the process number from the PID column.
Kill the process:
Terminal window
```
kill -9 <process-number>
```
Confirm that the process has closed by re-running the command at step 1.

Last updated: April 4, 2023

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