Hi Nala Ginrut,
Thanks for your reply.
I suspect I expressed myself poorly. (execlp "ls" "") replaces guile
with "ls", which lists my files and returns me to the shell.
What is some-function, where some-function works like this:
(some-function "ls")
-> "/bin/ls" (I'd settle for #t")
(some-function "asdfasdf")
-> #f
I thought that execl or its friends would be the way to answer that
question...
Thanks,
Paul.
On 23/11/11 05:47, Nala Ginrut wrote:
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
<paul.ems...@bioch.ox.ac.uk <mailto:paul.ems...@bioch.ox.ac.uk>> 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.
