Re: $cd /bin

["Brian Medley-3" <user=1551@nabble.blu.org>]

 On Sat, Nov 24, 2007 at 10:05:51AM -0500, Charles C. Bennett, Jr. wrote: 

Hi, 

One thing I don't understand about my OS (Mac OS Tiger) is this: 

$ cat /usr/bin/cd 
#!/bin/sh 
# $FreeBSD: src/usr.bin/alias/generic.sh,v 1.1 2002/07/16 22:16:03 wollman Exp $ 
# This file is in the public domain. 
${0##*/} ${1+"$@"} 
$ 

What does this do? 

> 
> On Wed, 2007-11-21 at 16:32 -0500, Kristian Erik Hermansen wrote: 
> > On Nov 21, 2007 3:49 PM, Eric Chadbourne <[hidden email]> wrote: 
> > > #unexpected 
> > > 
> > > bash$ cd // 
> > > bash$ pwd 
> > > // 
> > 
> > 
> > root@hermbuntu-desktop:~# pwd 
> > /root 
> > root@hermbuntu-desktop:~# env | grep PWD 
> > PWD=/root 
> > OLDPWD=/root 
> > root@hermbuntu-desktop:~# cd // 
> > root@hermbuntu-desktop://# pwd 
> > // 
> > root@hermbuntu-desktop://# env | grep PWD 
> > PWD=// 
> > OLDPWD=/root 
> > -- 
> > Kristian Erik Hermansen 
> > 
> 
> More fun.... 
> 
> cbox:ccb1001 cd // 
> cbox:ccb1002 pwd 
> // 
> cbox:ccb1003 /bin/pwd 
> / 
> cbox:ccb1004 ls 
> bcl/   dev/           home/        media/  net/   root/     srv/  usr/ 
> bin/   etc/           lib/         misc/   opt@   sbin/     sys/  var/ 
> boot/  fstab.replace  lost+found/  mnt/    proc/  selinux/  tmp/ 
> # 
> #  note /opt is a symlink 
> # 
> cbox:ccb1005 cd opt 
> cbox:ccb1006 pwd 
> //opt 
> cbox:ccb1007 /bin/pwd 
> /bcl/cbox/System/opt 
> cbox:ccb1008 cd $(/bin/pwd) 
> cbox:ccb1009 pwd 
> /bcl/cbox/System/opt 
> cbox:ccb1010 /bin/pwd 
> /bcl/cbox/System/opt 
> 
> ccb 
> 
> -- 
> Charles C. Bennett, Jr. <[hidden email]> 
> 
> 
> -- 
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