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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: Fri, 29 Mar 2024 23:51:02 -0000 (UTC)
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On Sat, 30 Mar 2024 00:14:42 +0100, Janis Papanagnou wrote:

> What I was saying is that there's initially literal program text
> that is transformed to tokens in the lexical analysis, and then
> further processed.

In a shell language, that is “further processed” as literal text, except 
for any instances of substitution markers.

>> in a programming language, you have the assumption that 
>> “everything is a program construct until indicated otherwise”.
> 
> So what is  'for i in a ; do ... ; done'  then in your world?

“for” is just the name of a command, like any other. In POSIX, this one 
happens to be built into the shell; it might not in other shells.