Path: utzoo!attcan!uunet!mcsun!hp4nl!star.cs.vu.nl!maart
From: maart@cs.vu.nl (Maarten Litmaath)
Newsgroups: comp.unix.shell
Subject: Re: Csh question: Doing cd .. from a symbolically linked directory
Message-ID: <8043@star.cs.vu.nl>
Date: 24 Oct 90 23:39:16 GMT
References: <JERRY.90Oct24110101@sky.slhisc.uucp>
Sender: news@cs.vu.nl
Reply-To: maart@cs.vu.nl (Maarten Litmaath)
Distribution: comp.unix.shell
Organization: VU Dept. of Computer Science, Amsterdam, The Netherlands
Lines: 61

In article <JERRY.90Oct24110101@sky.slhisc.uucp>,
	jerry@slhisc.uucp (Jerry Liebelson) writes:
)...
) SITUATION:
)
)   1. cd /tmp	
)   2. mkdir -p a/b
)   3. ln -s a/b c
)
) PROBLEM:
)
)   1. cd /tmp/c
)   2. pwd    (output is "/tmp/c")
)   3. cd ..
)   4. pwd    (output is "/tmp/a", not "/tmp" ! )
)
) QUESTION:
)   Is there a way to set things in the csh such that when I do the cd ..
) from /tmp/c, I will end up in /tmp and not in /tmp/a?

Yes:
	alias	cd	'cd `xcd $cwd \!*`'

...where `xcd' is the following shell script, located somewhere in your
PATH.  (You may have to change the `cd' in the alias to `chdir'.)

--------------------cut here--------------------
#!/bin/sh
#
# alias cd 'cd `xcd $cwd \!*`'

case $# in
1)
	echo $HOME
	exit 0
	;;
2)
	case $2 in
	/*)
		echo "$2"
		exit 0
		;;
	*..*)
		;;
	*)
		echo "$1/$2"
		exit 0
	esac
esac

# /a/b/c/symlink1/symlink2/../../src -> /a/b/c/src

SED='
: loop
	s|/[^/]*/\.\.||g
	t loop
'
echo "$1/$2" | sed "$SED"
--------------------cut here--------------------
--
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