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Why doesn't piping ls to cd work if there's only one directory?

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# 1  
Old 08-10-2011
Question Why doesn't piping ls to cd work if there's only one directory?

Hey guys. If I'm in a directory with only one directory, for example:
foo@bar:/$ ls

Why wouldn't piping this single line of output into cd work?
foo@bar:/$ ls | cd

I'm just getting started with the shell and I was trying to navigate into a directory with a long and complicated name. I've since learned about the tab autocompletion (which is awesome), but I'm still interested in the mechanics of why this situation doesn't work.

Any ideas?
# 2  
Old 08-10-2011
Because cd is in a subshell. It cd's in the subshell and then exits that subshell. It might work in ksh
*edit* Eh .. no it doesn't probably cd does not read stdin...

Last edited by Scrutinizer; 08-10-2011 at 03:34 PM..

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