Finding hostname from where user logged in

[S Ramakrishnan]

I am interested in finding out the env variable that stores the
name of the host from where the login session was initiated.
This is for AIX. 
Under Bourne Shell, this info is stored in the L0 env variable.
What about C shell ?

Thanx.

--
 S Ramakrishnan, CS Dept, McBryde Hall, VaTech, Blacksburg, Virg.  24061-0106
       {    Email : (Internet) : ramakris at bloss.cs.vt.edu    }