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Re: extension of file-test primitives?

From: Dethrophes
Subject: Re: extension of file-test primitives?
Date: Wed, 23 Aug 2017 15:51:09 +0200
User-agent: K-9 Mail for Android

On August 23, 2017 3:37:51 PM GMT+02:00, Chet Ramey <address@hidden> wrote:
>On 8/23/17 9:34 AM, Greg Wooledge wrote:
>> On Wed, Aug 23, 2017 at 04:22:09PM +0300, Pierre Gaston wrote:
>>>  testfile () {
>>>     local OPTIND=1 f=${!#}
>>>     while getopts abcdefghLkprsSuwxOGN opt;
>>>           do
>>>              case $opt in
>>>                [abcdefghLkprsSuwxOGN]) test -$opt $f  || return 1;;
>> "$f"
>>>                *)return 1;;
>>>              esac;
>>>            done
>>>  }
>>> if testfile -fx file;then.
>> Add the quotes, make opt local too, and I think we have a winner.
>This has the advantage of supporting both syntax options: a single
>option with multiple operators or a series of options, each with one
>or more operators, combined with a single operand.

Not really as it changes the meaning of 
test -f file -a -x file
Which I always understood as the correct way of doing this in the first place...

The only optimisation would be to possible cache the stat to save on system io.

Envoyé de mon téléphone Android avec K-9 Mail. Excusez la brièveté.

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