[PATCH] argv[0] of execvp when ENOEXEC

[Rob Landley]

On 08/21/2013 09:16:29 AM, Wei-cheng Wang wrote:
> On Wed, Aug 21, 2013 at 6:12 PM, Denys Vlasenko
> <vda.linux at googlemail.com> wrote:
> > On Tue, Aug 20, 2013 at 6:42 PM, Wei-cheng Wang <cole945 at gmail.com>  
> wrote:
> > You mean, this happens if foo.sh is a non-executable file
>   Yes.  foo.sh a shell script with execute permission without #! at
> the very first line.
>   For example,
>   $ echo "echo hello" > ./foo.sh
>   $ chmod a+x ./foo.sh
>   $ ./foo.sh
>   hello
> > and /bin/sh is a symlink to busybox?
>   Yes. busybox, toybox, toolbox (android) and similar tools use this  
> way to
>   provides multiple Unix tools with a single executable binary.

gzip/gunzip detecting whether to force the -d flag predates them all by  
a decade, and I'm told the bell labs guys were already doing it in the  
70's in Programmer's Workbench...

Rob