Re: find 'cd'

[Todd Gruhn <tgruhn2%gmail.com@localhost>]

OH ..,
I recall a program called 'cd' (/bin/cd?)
There is also a function (?) that is part of
ksh.

Did this change since 2005?

On Wed, Jul 15, 2026 at 8:50 PM Brad Spencer <brad%anduin.eldar.org@localhost> wrote:
>
> Steve Rikli <sr%genyosha.net@localhost> writes:
>
> > On Wed, Jul 15, 2026 at 07:23:37PM -0400, Todd Gruhn wrote:
> >> I cant find 'cd'.
> >> Want there a program /.../cd ?
> >> Why cant I find this?
> >
> > I'm not sure I understand the question, but maybe this helps:
> >
> > $ type cd
> > cd is a shell builtin
> > $ echo $SHELL
> > /usr/pkg/bin/bash
> >
> > Similar for other shells (ksh, and sh), I believe csh has 'which' instead
> > of 'type', with same result.
>
>
>
> In fact, I think that 'cd' must be a shell built in and can not really
> exist as a useful executable program.  Think about it....  the 'cd'
> executable could not change the directory of its parent process, which
> is probably what you intended on doing by trying to execute it.  It
> could change the directory for itself, but as soon as it exited, the
> parent would be right back where it started again.  I have very vague
> memories of reading that perhaps some very early Unix systems, like in
> the V1 time frame, this all might have worked differently, but it hasn't
> for a very long time, assuming that my vague memory is at all correct.
>
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> --
> Brad Spencer - brad%anduin.eldar.org@localhost