Reading the original /dev from an rlogin

[Ken Staggers]

Hi-

We have an assistants account where the assistants can rlogin to it.
Sometimes there are 2-5 assistants rlogined to the account at one tine and 
since the assistants account /dev will be p0, p1, p2, .... its difficult to
tell which assistant is on which pseudo term.  I am writing an accounting
program for the account, and I need to know how to determine this.  Are
there C (or csh) functions that I can use to determine which assistant is
on which pseudo term?

--Ken Staggers
  Chief Unix Lab Assistant
  St John Fisher College
  (...!rutgers!rochester!cci632!sjfc!kes3200)