[GTALUG] Bash Problem

[Mauro Souza]

I almost always use them. Only left them out for very simple scripts.

It's not really necessary all the time, but better safe than sorry...

On Jan 9, 2017 22:00, "Bob Jonkman via talk" <talk at gtalug.org> wrote:

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Chris F.A. Johnson wrote:
> The braces are not necessary here.

Are braced incorrect here? I've been putting braces around all
variable names, so that there are fewer syntax exceptions for me to
remember...

- --Bob.


On 2017-01-09 05:47 PM, Chris F.A. Johnson via talk wrote:
> On Sun, 8 Jan 2017, Mauro Souza via talk wrote:
>
>> Or nFname="${base}.mp4"
>>
>> Using brackets you can mix variables and text and create
>> something like this:
>> newName="${oldname}-bkp-${filedate}.${extension}.old"
>
> The braces are not necessary here. This will work fine:
>
> newName="$oldname-bkp-$filedate.$extension.old"
>
> Braces would be necessary if you were using underscores instead of
>  hyphens because they can be part of a variable name:
>
> newName="${oldname}_bkp_$filedate.$extension.old"
>

- --


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