If I su to a user, how can I tell who the base user is?

leepic · 02-10-2012, 05:53 PM

After logging in to a box as a user(1), I then su to another user(2), is there a command I can execute as user (2) to see who the base user(1) is?
Thanks...

camorri · 02-10-2012, 06:07 PM

The 'who' command will show you the "base user".

TroN-0074 · 02-10-2012, 08:06 PM

if you type whoami the reply from terminal will be the userID in which you are logged in.

Good luck to you.

catkin · 02-10-2012, 09:37 PM

If the - option of su has been used (su - newuser, rather than su newuser) then the only way AFAIK is to parse ps fau output.

chrism01 · 02-12-2012, 06:40 PM

Code:

# show curr user

whoami

# show 'prev' user
who am i

note the spaces in 2nd cmd