Hi,
I have to run an external program but the program does not termination on some
conditions, e.g, ping, will not exit unless you specify -c or some other
circumstances.
Now I what I want to do is:
my @array;
die "Cannot fork myprog" unless (defined my $pid = fork)
if ($pid==0){
open MYPROG, "myprog |" or die "Cant run myprog";
my $timeout = 0;
while (<MYPROG>){
exit(0) if $timeout == 3;
push @array, $_;
sleep 1;
$timeout++;
}
waitpid($pid, 0);
print "@array\n";
The problem with the code above is that @array goes back to its initial state
after exiting the child. No contents are printed. I even tried references but
it didn't work as well.
If I don't use fork, I the way I would kill the process is by doing a call to
pkill. With fork, it would be much easier with exit. However the output of
external program gets discarded.
Can you think of any workaround for this?
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