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Re: Auto-update program cache feature

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  Re: Auto-update program cache feature Bob Proulx <bob@proulx.com> - 2018-10-06 14:23 -0600

#14690 — Re: Auto-update program cache feature

Jeffrey Walton wrote:
> I think a useful feature for Bash would be to automatically update the
> program cache after an install.

Put this in your ~/.bashrc file and I believe your use case will be
much happier.

  shopt -s checkhash

In the bash manual:

              checkhash
                      If set, bash checks that a command found in the hash
                      table exists before trying to execute it.  If a hashed
                      command no longer exists, a normal path search is
                      performed.

I would prefer that to be a default.  But it changed a behavior back
in the day when it was added and deviated from the previous csh
behavior.  Therefore being an optional option makes sense.  But I
don't see a downside to defaulting to it now.  In any case I always
add it to my bashrc file.  (Along with "shopt -s checkwinsize" too.)

Bob

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