On Fri, 7 Apr 2000, Steve Revilak wrote:

> The flip side -- if you add an executable then immediately try to use
> it, the shell won't know it's there.  You need to force it to rebuild
> it's command table by giving the "rehash" command.
> 
> Logging out then logging back in will also have the same effects. 
> Another alternative is to fully qualify the name to the executable.
> 
> Now for my own curiosity -- so bash/sh behave similarly here?

Bash doesn't even have a "rehash", nor is it needed. Bash has a "hash"
builtin, which is interesting: "hash" by itself displays the hash
list, but "hash" can also be used to stuff the table, bypassing the
path, e.g.: "hash -p /usr/pkg/bin/ntpq ntpq".