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From: boyd@necisa.ho.necisa.oz.au (Boyd Roberts)
Newsgroups: comp.unix.questions
Subject: Re: csh levels
Message-ID: <2011@necisa.ho.necisa.oz.au>
Date: 5 Feb 91 23:43:42 GMT
References: <1991Feb5.000455.9976@massey.ac.nz> <5948@idunno.Princeton.EDU>
Organization: NEC Information Systems Australia Pty. Ltd.
Lines: 27

>In article <1991Feb5.000455.9976@massey.ac.nz> R.Singh@massey.ac.nz (R. Singh) writes:
>Let's assume a csh invoked from a csh. How do keep track of how far down
>the track, one is? Let's say one has recursively invoked csh, it should be
>possible to discover how far down one is. How does one do it?
>Thanx
>

Back in the dim distant past I used to have my prompt set to indicate
how many C shells I had and whether they were root shells or me (now
that's _quite_ a while back -- ugh -- the horrors of C shell).  I have
since returned to the fold and use a V8 style Bourne shell.

I had this variable $cshdepth which had a `#' or `%' appended to it
in my .cshrc depending on the uid of the shell.  $cshdepth would then
set part of my prompt, so I'd get a display like this:

    1% /bin/su
    Password:
    # exec csh
    1%# 

You get the idea?


Boyd Roberts			boyd@necisa.ho.necisa.oz.au

``When the going gets wierd, the weird turn pro...''