lsof - local open ports

Thu, 14 Mar 2019 23:42:02 +0000

A short one:

lsof -i -P -n | grep LISTEN

This will output all the ports the system is listing on. You might have to prepend “sudo”.

So then the command will be:

sudo lsof -i -P -n | grep LISTEN

The list is long without the “grep”, it will filter the output and only show the lines which contain “LISTEN”.

Edit:
Oliver from Hubzilla (part of the Fediverse) pointed out that

Netstat on tech.notes