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From: Daniel Shahaf <d.s@daniel.shahaf.name>
To: Ray Andrews <rayandrews@eastlink.ca>
Cc: zsh-users@zsh.org
Subject: Re: trapped in bash
Date: Mon, 19 Dec 2016 00:32:19 +0000	[thread overview]
Message-ID: <20161219003219.GA21509@fujitsu.shahaf.local2> (raw)
In-Reply-To: <5856B133.9010602@eastlink.ca>

Ray Andrews wrote on Sun, Dec 18, 2016 at 07:54:27 -0800:
> Would it be doable to distinguish between *really* 'not found' and
> 'can't run this binary'?  If nothing else it would have stopped me
> from having to ask that question :-/

As far as zsh is concerned, a binary file is simply something that can
be passed to execve().  zsh does not attempt to parse or load the file;
the C library and OS do.  So it is they who are in a position to issue
an error message explaining _why_ the file can't be executed.

I suppose you could write a command_not_found_handler() function that
tried to reverse engineer _why_ the command wasn't found — with the
obvious limitations, e.g., race conditions between the library's
execution and the handler's.

Cheers,

Daniel


  reply	other threads:[~2016-12-19  0:35 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-16 15:33 Ray Andrews
2016-12-16 21:51 ` Aaron Schrab
2016-12-16 22:39   ` Ray Andrews
2016-12-16 23:05     ` Bart Schaefer
2016-12-17 20:27       ` Ray Andrews
2016-12-17 20:43         ` Bart Schaefer
2016-12-17 22:40           ` Ray Andrews
     [not found]           ` <5855BEF2.6090208__18199.534857604$1482015164$gmane$org@eastlink.ca>
2016-12-18 15:06             ` Daniel Shahaf
2016-12-18 15:54               ` Ray Andrews
2016-12-19  0:32                 ` Daniel Shahaf [this message]
2016-12-19  2:30                   ` Bart Schaefer
2016-12-19  4:29                     ` Ray Andrews
2016-12-19  5:48                       ` Bart Schaefer
2016-12-19 16:26                         ` Ray Andrews
     [not found]                         ` <ab7aeb33-d091-6602-8baa-cce92300d289__26556.3400615521$1482166729$gmane$org@eastlink.ca>
2016-12-19 17:47                           ` Daniel Shahaf
2016-12-17 23:16 ` Jim
2016-12-17 23:38   ` Ray Andrews

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