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Re: Cygwin exe magic does not understand .com extension?
- From: Christopher Faylor <cgf-use-the-mailinglist-please at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Mon, 4 Nov 2013 22:58:21 -0500
- Subject: Re: Cygwin exe magic does not understand .com extension?
- Authentication-results: sourceware.org; auth=none
- References: <3310368726 dot 20131105025244 at mtu-net dot ru>
- Reply-to: cygwin at cygwin dot com
On Tue, Nov 05, 2013 at 02:52:44AM +0400, Andrey Repin wrote:
>Greetings, All!
>
>$ mode<Tab>
>mode.com modemui.dll modex.dll
That would be /bin/sh exe magic from the looks of it. It is probably
just trying to find anything with an executable bit set, just like on
Linux.
>$ mode
>bash: mode: command not found
>
>Now, I see two issues.
>First, it is that it see .dll files as executables. Which is true in essence,
>but rather suspicious, as .dll files are normally not directly executable.
>Would really like an explanation for this behavior.
>
>Second, is that it actually see mode.com, but unable to execute it.
It's likely that "mode.com" would execute it.
>P.S.
>$ set | grep PATHEXT
>PATHEXT='.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.PSC1'
% cd /cygwin/sources
% grep -B17 PATHEXT *(.)
environ.cc-/* Minimal list of Windows vars which must be converted to uppercase.
environ.cc- Either for POSIX compatibility of for backward compatibility with
environ.cc- existing applications. */
environ.cc-static struct renv {
environ.cc- const char *name;
environ.cc- const size_t namelen;
environ.cc-} renv_arr[] = {
environ.cc- { NL("ALLUSERSPROFILE=") }, // 0
environ.cc- { NL("COMMONPROGRAMFILES=") }, // 1
environ.cc- { NL("COMPUTERNAME=") },
environ.cc- { NL("COMSPEC=") },
environ.cc- { NL("HOME=") }, // 4
environ.cc- { NL("HOMEDRIVE=") },
environ.cc- { NL("HOMEPATH=") },
environ.cc- { NL("NUMBER_OF_PROCESSORS=") }, // 7
environ.cc- { NL("OS=") }, // 8
environ.cc- { NL("PATH=") }, // 9
environ.cc: { NL("PATHEXT=") },
i.e., the only thing Cygwin does with PATHEXT is convert it to upper case.
cgf
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