Re: Bug in system?

[Ludovic Courtès]

Hi,

Keith Wright <address@hidden> skribis:

>  > (define y (with-output-to-string (lambda()(system "date"))))
>   Tue Nov  6 21:42:41 EST 2012
>  > y
>   $2 = ""
>
> The stdout of the system call does not go into the string,
> why not?

As Daniel said, this doesn’t work currently.

Instead, you would use the (ice-9 popen) module for that:

  scheme@(guile-user)> (use-modules (ice-9 popen) (ice-9 rdelim))
  scheme@(guile-user)> (define p (open-input-pipe "date"))
  scheme@(guile-user)> (read-line p)
  $7 = "Wed Nov  7 16:05:02 CET 2012"
  scheme@(guile-user)> (close-pipe p)
  $8 = 0

Ludo’.