Re: Looping Shell Scripts and System Load

[Greg Wooledge <wooledg@eeg.ccf.org>]

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).