"John W. Krahn" wrote:
>
> Bruno oliveira wrote:
> >
> > Hi!
>
> Hello,
>
> > I want to start a program in perl but i need to keep
> > the pid to be able to kill it in the future.
> >
> > For exmple:
> >
> > system("top &");
> >
> > this would start "top", but then i wouldn't be able to
> > identify the process in order to kill it. Is there a
> > way to do this (other than using fork) ?
system() uses fork.
perldoc -f system
system LIST
system PROGRAM LIST
Does exactly the same thing as `exec LIST', except
that a fork is done first, and the parent process
waits for the child process to complete.
> defined( my $pid = fork ) or die "Cannot fork: $!";
> $pid and exec 'top' or die "Cannot exec 'top': $!";
Sorry, that should be:
defined( my $pid = fork ) or die "Cannot fork: $!";
$pid or exec 'top' or die "Cannot exec 'top': $!";
John
--
use Perl;
program
fulfillment
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