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From: aeusesef@csun.UUCP
Newsgroups: comp.unix.questions
Subject: Re: Korn Shell (alias for 'cd')
Message-ID: <598@csun.UUCP>
Date: Wed, 1-Apr-87 12:31:27 EST
Article-I.D.: csun.598
Posted: Wed Apr  1 12:31:27 1987
Date-Received: Sat, 4-Apr-87 12:09:50 EST
References: <580@csun.UUCP> <2295@tektools.TEK.COM> <350@houxa.UUCP> <1341@uvacs.CS.VIRGINIA.EDU>
Reply-To: aeusesef@csun.UUCP (Sean Eric Fagan)
Organization: California State University, Northridge
Lines: 58
Keywords: Korn shell ksh aliases parameters oops

In article <1341@uvacs.CS.VIRGINIA.EDU> rwl@uvacs.CS.VIRGINIA.EDU (Ray Lubinsky) writes:
$$ alias cd=chdir
$$ chdir()
$$ {
$$ 	cd $1
$$ 	PS1="$PWD >"
$$ }
$
$Actually, you have to quote the cd within chdir to retain it's orginal meaning.
$Otherwise you've set up a recursive call to the alias cd:
$
$	alias cd=chdir
$	function chdir
$	{
$		'cd' $1
$		PS1="$PWD >"
$	}
$
$I discover this while trying to modify cd to fit in with my pushd and popd
$functions.
$
$-- 
$| Ray Lubinsky         Department of Computer Science, University of Virginia |

Ok, finally my reply (being the one who started this whole mess).  The original
problem was that I wanted to do something like this (this is for C shell):
	alias cd 'chdir !$ ; dirs'
(please note that I did *not* want to change the prompt) in Korn shell. 
I tried
	alias cd='chdir !$ ; print - $PWD', but that didn't work, so I
changed the !$ to $*.  Still no go.  That was when I posted my original
article (got it somewhere around here...).  Just after I posted it, it was
suggested to me that I try
	alias cd=cd1
	funtion cd1 {
		chdir $1;
		print - $PWD
	}
That worked, but I wanted to see if there were any better way of doing it.
So far, noone has suggested any. (Are you reading this, Bell Labs?)  Anyway,
that is the way to do it, and you cannot use the example above since chdir
is a Korn shell built-in.  Apparanlty, Korn shell searches aliases, then
built-ins, then functions, then uses PATH.  If, however, you use a different
name, it will work.
I tried to reply to everyone who sent me mail, but I am not sure if I did.
To those whom I missed, and also those who posted replies, thanks for the
try, its not your fault C shell is superior in only one aspect...

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