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Groups > linux.debian.user > #223967

Re: Looping Shell Scripts and System Load

From Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups linux.debian.user
Subject Re: Looping Shell Scripts and System Load
Date 2020-06-24 21:00 +0200
Message-ID <AliMP-73V-7@gated-at.bofh.it> (permalink)
References <Alhe1-6i7-3@gated-at.bofh.it> <AlhH3-6rP-9@gated-at.bofh.it> <Alitr-6Xd-1@gated-at.bofh.it>
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On Wed, Jun 24, 2020 at 08:23:18PM +0200, Roger Price wrote:
> On Wed, 24 Jun 2020, Greg Wooledge wrote:
> 
> > > MEDIADIR=`pwd`
> > 
> > Don't use all caps variable names.
> 
> Without getting into syntax-religious wars, what is the reasoning behind
> this recommendation?  Roger

All-caps names are reserved for environment variables (HOME, PATH),
and internal shell variables (IFS, PWD, HISTFILE).

Avoiding all-caps names allows you to avoid collisions with a variable
name that might be used for something else.  Most of the time.  This
being the Unix shell, there are *always* stupid exceptions (http_proxy
and friends on the environment side, and auto_resume and histchars in
bash).

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Thread

Looping Shell Scripts and System Load "Martin McCormick" <martin.m@suddenlink.net> - 2020-06-24 19:20 +0200
  Re: Looping Shell Scripts and System Load Roberto C. Sánchez <roberto@debian.org> - 2020-06-24 19:30 +0200
    Re: Looping Shell Scripts and System Load Greg Wooledge <wooledg@eeg.ccf.org> - 2020-06-24 19:50 +0200
  Re: Looping Shell Scripts and System Load Greg Wooledge <wooledg@eeg.ccf.org> - 2020-06-24 19:50 +0200
    Re: Looping Shell Scripts and System Load Roger Price <debian@rogerprice.org> - 2020-06-24 20:40 +0200
      Re: Looping Shell Scripts and System Load Greg Wooledge <wooledg@eeg.ccf.org> - 2020-06-24 21:00 +0200
        Re: Looping Shell Scripts and System Load "Martin McCormick" <martin.m@suddenlink.net> - 2020-06-24 22:00 +0200
    Re: Looping Shell Scripts and System Load Tixy <tixy@yxit.co.uk> - 2020-06-25 11:30 +0200
      Re: Looping Shell Scripts and System Load David <bouncingcats@gmail.com> - 2020-06-25 15:40 +0200
  Re: Looping Shell Scripts and System Load David Christensen <dpchrist@holgerdanske.com> - 2020-06-24 21:40 +0200

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