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Re: Substring search in dash [ _NOT_ bash ] shell

From Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups linux.debian.user
Subject Re: Substring search in dash [ _NOT_ bash ] shell
Date 2016-09-27 17:30 +0200
Message-ID <sm2ut-2I8-9@gated-at.bofh.it> (permalink)
References <sm0VI-1H1-33@gated-at.bofh.it> <sm2b7-2BP-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, Sep 27, 2016 at 05:05:08PM +0200, Thomas Schmitt wrote:
> Greg Wooledge wrote:
> > Do not use -o and -a in a test command.
> > http://mywiki.wooledge.org/BashPitfalls#pf6
> 
> As if anybody would dare to touch the old "test" command. :))
> 
> Rather i avoid "[" brackets, not to allow any implementor an excuse.
> But in plaintext mode i wanted to stay near to the given original example.
> It worked when i tested in dash and bash.

The test and [ commands have the same features and limitations.  The only
difference is the final argument of [ has to be ].

People do run into the problem occasionally in real life:

https://lists.gnu.org/archive/html/bug-bash/2015-07/msg00125.html

But, I will admit it's rare.  (And hard to Google, though this is mostly
due to Google's extremely inconvenient refusal to let you use punctuation
in searches.)

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Thread

Substring search in dash [ _NOT_ bash ] shell Richard Owlett <rowlett@cloud85.net> - 2016-09-26 17:50 +0200
  Re: Substring search in dash [ _NOT_ bash ] shell "Thomas Schmitt" <scdbackup@gmx.net> - 2016-09-27 10:10 +0200
    Re: Substring search in dash [ _NOT_ bash ] shell "Thomas Schmitt" <scdbackup@gmx.net> - 2016-09-27 10:50 +0200
      Re: Substring search in dash [ _NOT_ bash ] shell Greg Wooledge <wooledg@eeg.ccf.org> - 2016-09-27 15:50 +0200
        Re: Substring search in dash [ _NOT_ bash ] shell "Thomas Schmitt" <scdbackup@gmx.net> - 2016-09-27 17:10 +0200
          Re: Substring search in dash [ _NOT_ bash ] shell Greg Wooledge <wooledg@eeg.ccf.org> - 2016-09-27 17:30 +0200
            Re: Substring search in dash [ _NOT_ bash ] shell "Thomas Schmitt" <scdbackup@gmx.net> - 2016-09-27 18:00 +0200

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