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Re: Bash: pipe once more

Title: Re: Bash: pipe once more

Allan Wind wrote:

> cd does not seem to do its thing when stdout is redirected to a pipe,
> however it does work with a (temporary) file:

Actually, cd does do its thing--it's just that its thing applies to the subprocess
shell in the pipe instead of the shell it would normally apply to (when not
run in a pipe subshell), so you don't see it.

To see that, run the sequence:

   ( cd some-subdirectory ; pwd ) | cat

The second pwd's output will show that cd did its thing.  (And, of course,
the third will show what it doesn't do (that its effect is limited to the

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