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Path: utzoo!utgpu!water!watnot!watmath!clyde!cbatt!danews!lvc
From: lvc@danews.UUCP
Newsgroups: comp.unix.questions
Subject: Re: Korn Shell (alias for 'cd')
Message-ID: <473@danews.ATT.COM>
Date: Mon, 30-Mar-87 19:19:56 EST
Article-I.D.: danews.473
Posted: Mon Mar 30 19:19:56 1987
Date-Received: Wed, 1-Apr-87 02:04:07 EST
References: <580@csun.UUCP> <2295@tektools.TEK.COM> <350@houxa.UUCP>
Organization: AT&T Medical Information Systems, Columbus, Oh
Lines: 37
Keywords: Korn shell ksh aliases parameters oops
Summary: yet another ksh cd function

In article <350@houxa.UUCP>, grs@houxa.UUCP (G.SILLS) writes:

> The preferred way to do this is to create a function which performs the 
> change directory, and then alias cd to that function. For example:
> 
> alias cd=chdir
> chdir()
> {
> 	cd $1
> 	PS1="$PWD >"
> }
> 
>  
> or whatever.
> 
> 		Glenn Sills 
> 		BTL Merrimack Valley 
> 		!houxa!grs


This is a somewhat better PS1/alias/function triple:

PS1='$PWD >'	# use single quotes
alias cd=chdir
chdir()
{
	"cd" $*
}

The "s around the cd in chdir are *needed to prevent alias expansion*
but still allows execution of cd.  The $* is used instead of $1
because ksh cd can accept two arguments.  The definition of PS1 can
be done once in single quotes.  It will be evaluated *every time* it is
printed (so will the ENV parameter).
-- 

	Larry Cipriani, AT&T Network Systems, Columbus OH, (614) 860-4999