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Re: Auto-update program cache feature

From: Chet Ramey
Subject: Re: Auto-update program cache feature
Date: Thu, 4 Oct 2018 10:23:09 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

On 10/3/18 4:45 PM, Jeffrey Walton wrote:
> Hi Everyone,
> I noticed a fair number of new Linux users have trouble with stale
> program caches. Users install a package from a package manager or
> sources and then are confused when the new package is not used. They
> do not realize they need to run 'bash -r'; and most don't know where
> to begin searching.

OK, let's consider this. There are three cases:

1. A new program gets installed with the same name as an existing one,
   in the same directory.

2. A new program gets installed with the same name, but in a different
   directory in $PATH (and before the existing one).

3. A new program gets installed with a new name.

(I'm putting aside the program deletion case.)

You're saying that the seond scenario is most common, and common enough
that we should develop a complex solution for it? I'd have to see more
data before I'd accept that.

``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    address@hidden    http://tiswww.cwru.edu/~chet/

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