Re: execlp

[Nala Ginrut]

I think there's a bug.

(execlp "ls" "") will access.

Since the second parameter is optional, scm_execlp doesn't handle exec_argv unbounded situation.

On Wed, Nov 23, 2011 at 12:06 AM, Paul Emsley <address@hidden> wrote:

Hi,

I am trying to see if there is a way to determine if a program is in the path (i.e. a bit like "which"), returning a #t or #f answer.  I was looking execl and execlp.

The documentation for execl says:

> Executes the file named by path as a new process image

what is path ?  I'm guessing that that should be "filename".

While playing around, I notice that

(execlp "ls")

produces a core dump.

My question is then, *is* there a way to determine if a string is executable? (And if so, how? :-)

Thanks,

Paul.