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devel / comp.unix.shell / Re: Command 'strings' reading (not) standard input

Re: Command 'strings' reading (not) standard input

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http://rslight.i2p/devel/article-flat.php?id=6606&group=comp.unix.shell#6606

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From: janis_papanagnou@hotmail.com (Janis Papanagnou)
Newsgroups: comp.unix.shell
Subject: Re: Command 'strings' reading (not) standard input
Date: Wed, 10 Aug 2022 11:03:11 +0200
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by: Janis Papanagnou - Wed, 10 Aug 2022 09:03 UTC

On 09.08.2022 20:33, Lew Pitcher wrote:
> On Tue, 09 Aug 2022 20:25:50 +0200, Janis Papanagnou wrote:
>
>> Thanks to process substitution in newer shells I can write, e.g.,
>> strings <( zcat file.gz ) | ...
>>
>> I am wondering, though, whether there's a reason why 'strings' is
>> not defined to support (additionally) filter calling semantics
>> ...(binary stream)... | strings | ...(text stream)...
>
> Closed, cannot reproduce
>
> 14:32 $ strings <(zcat ./cat.gz) | grep comment
> .comment

Yes, that is what works, as I wrote; using the newer process
substitution shell feature that some Unix systems support.

In older or non-supporting shells and Unix versions you'd
have tried it the "standard way"...

zcat ./cat.gz | strings | grep comment

piping the results of zcat into strings.

According to the man page you have to provide a file, and a
test of '-' as a filename substitute won't work since that's
a third alternative to options -a or --all.

Janis

Subject	Author
Command 'strings' reading (not) standard input	Janis Papanagnou