On Fri, Feb 13, 2015 at 11:54 PM, Always Learning <[email protected]> wrote:
>
>> And third, you generally should use
>> double quotes around variables in tests so they continue to exist as
>> an empty string if the variable happens to not be set.
>
> Thanks for that. I assumed if test 1 worked, so would test 2.
>
> Have re-run test 2 with
>
>
>> 16 if [ $file = "law00css" ]
You still missed the part about quoting variables. You quote plain
strings to hold embedded spaces together (or single-quotes to avoid
parsing metacharacters). You use double quotes around $variables so
they don't disappear completely if the variable isn't set, causing a
syntax error. To understand it completely you need to know the order
of operations as the shell makes multiple passes over the line,
parsing, processing metacharacters, and expanding variables. And I
don't know where to find a concise description of that any more.
--
Les Mikesell
[email protected]
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