From: Ken Bloom <kbloom@...>
Date: 2007-12-14T09:40:01+09:00
Subject: Re: Executing Files (without shell)

On Thu, 13 Dec 2007 18:27:10 -0500, thefed wrote:

> Once again, a similarly themed question from me:
> 
> Is it possible  (without syscall ) to execute a file without using a
> shell?

Calling Kernel#system will sometimes fork a shell if you pass it 
something complicated like pipelines, but you can be guaranteed that it 
won't spawn a shell (it will execve the binary directly) if you pass the 
binary name and the command line arguments as separate parameters. (E.g. 
system("echo","hello","world") Likewise if you're running a binary that 
takes no parameters so there's only one string being passed as a 
parameter.

--Ken

-- 
Ken (Chanoch) Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/