User Id

prospekrisal · 07-11-2006, 07:34 PM

Is user ID person who is in the current system?

fahrisal@linux:~> who am i
fahrisal pts/1 2006-07-12 08:22

Is "fahrisal" a user ID?

how to identify whether the particular user has logged in (using shell script)?

Tinkster · 07-11-2006, 07:39 PM

It's a name, not an id. The uid is a numerical value.

To retrieve the name there's several possibilities.

Code:

a) the one you already listed `who am i`
b) echo $LOGNAME
c) `id` which will give you pretty much all you need to
   know about the user you're currently running the program 
   id as ... :} (in terms of id and groups, that is).

Cheers,
Tink

prospekrisal · 07-11-2006, 07:51 PM

So, could u gimme the example of UID in terminal program!!

nadroj · 07-11-2006, 08:13 PM

check out 'man id', as Tinkster suggested.

twilli227 · 07-11-2006, 08:48 PM

Code:

twilli@ubuntu:~$ id
uid=1000(twilli) gid=1000(twilli) groups=4(adm)1000(twilli)