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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.unix.shell,comp.unix.programmer,comp.lang.misc
Subject: Re: Command Languages Versus Programming Languages
Date: Sun, 7 Apr 2024 02:02:15 -0000 (UTC)
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On Sun, 07 Apr 2024 00:01:43 +0000, Javier wrote:

> The downside is the loss of performance because of disk access for
> trivial things like 'nfiles=$(ls | wc -l)'.

Well, you could save one process creation by writing
“nfiles=$(echo * | wc -l)” instead. But that would still not be strictly 
correct.

> I suspect disk access times where
> one of the reasons for the development of perl in the early 90s.

Shells were somewhat less powerful in those days. I would describe the 
genesis of Perl as “awk on steroids”. Its big party trick was regular 
expressions. And I guess combining that with more sophisticated data-
structuring capabilities.