/usr/bin/cd (was Re: sudo cd command doesn`t appear to work.)

Matthew Hannigan mlh at zip.com.au
Thu Aug 1 01:08:52 EDT 2002

On Wed, Jul 31, 2002 at 09:59:44PM -0700, Howard Owen wrote:
> Well, not exactly. With bash, at least, 'cd' is a shell builtin. It makes 
> sense
> that this would be so, since a subshell cannot, indeed, affect the 
> environment of
> its parent. So cd has to be a builtin so that the CWD of the current shell 
> can be
> changed. This causes problems for sudo, since there's no '/bin/cd' command 
> to run.
> 	cd /tmp
> 	^^  shell intercepts 'cd' command
> 	sudo cd /tmp
> 	     ^^ shell does nothing special with second arg.
[ ... ]

This may be tangential to tcurrent thread, but, sadly,
there IS a /usr/bin/cd command on POSIX standard systems.

It's perfectly useless, of course, and can make things even
worse (more complex) for commands like sudo.


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