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 <[email protected]>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. > > > > >
