So I was asked what was the easiest and fastest way to determine who was logged into an Oracle Linux host. This is what I came up with. Have a better one? Post a comment below.

> who

> last

> pinky (instead of finger… get it?)

For secure shell details:

> lsof | grep “ssh->”

> lsof -i :22

> lsof -i -n | egrep ‘\<ssh\>’