From owner-freebsd-questions  Sat Jan 31 21:44:42 1998
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Date: Sat, 31 Jan 1998 21:42:05 -0800 (PST)
From: Shawn Ramsey <shawn@luke.cpl.net>
To: laszlo vagner <kf7nn@mutsgo.dyn.ml.org>
cc: questions@FreeBSD.ORG
Subject: Re: rehash missing
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> Doooh!..
> 
> ok so i am dumb.....
> 
> 
> i didnt realize rehash was part of the shell
> 
> i did a "csh" and tried "rehash" it works now!
> 
> actually it always worked if you use the right shell  ha!
> 
> So how do you know what commands are in each shell??

Reading the man page would be a good start. :)