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From: Paul Emsley <paul.emsley@bioch.ox.ac.uk>
To: guile-user@gnu.org
Subject: execlp
Date: Tue, 22 Nov 2011 16:06:22 +0000	[thread overview]
Message-ID: <4ECBC87E.7090000@bioch.ox.ac.uk> (raw)


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.






             reply	other threads:[~2011-11-22 16:06 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-22 16:06 Paul Emsley [this message]
2011-11-23  5:47 ` execlp Nala Ginrut
2011-11-23  5:57   ` execlp Nala Ginrut
2011-11-23 12:16   ` execlp Paul Emsley
2011-11-23 12:22     ` execlp Nala Ginrut
2011-11-23 12:28     ` execlp Nala Ginrut
2011-11-23 14:03       ` execlp rixed
2011-11-23 14:38         ` execlp Nala Ginrut
2011-11-23 19:18     ` execlp Thien-Thi Nguyen

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