From: Graham Menhennitt <graham@...>
Date: 2012-10-12T18:09:28+09:00
Subject: Re: && should work in a system call?

On 11/10/2012 05:26, Roger Pack wrote:
>>>>   system("ls && ls")
>>>> ls: &&: No such file or directory
>>>> ls: ls: No such file or directory
>>>> => false
>>> I see now that it works in Linux, but not windows.  I'm guessing this
>>> is a bug, but feedback is welcome...
>> There is not `ls` command on Windows (unless you install cygwin /
>> mingw yourself). You're looking for `dir`.
> In this case, I have one:
>
> $ whichr ls
> higher in the list is executed first
> C:\installs\devkit451\devkit451\bin\ls.exe
> C:\Program Files (x86)\Git\bin\ls.exe
>
> But it seems you can substitute any executable name in there to get
> the offending behavior...
> -r
>
This is purely an educated guess... it possibly matters whether you have 
a SHELL environment variable set. If you do and it's set to bash or sh 
or csh, I think that this will work correctly. If it's not set, you'll 
get the Windows shell: cmd.exe - I don't think that it will grok &&.

Graham