Re: How do I get the process ID from a system("x &") call?

This code works nicely... :)


print "About to fork:\n";

my $pid = fork();
  if ($pid ==0)
    {
      exec "sleep 5";
      exit(0);
    }
  else
    {
      print "Child PID: $pid\n";
    }
print "Parent continuing...\n";
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----
Zak
"There is no room in this country for hyphenated Americanism" ~ Theodore Roosevelt (1915)

Comment on Re: How do I get the process ID from a system("x &") call? Download Code

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Re: Re: How do I get the process ID from a system("x &") call? by zakzebrowski (Curate) on Sep 19, 2002 at 18:08 UTC
Update -- zombie processes never die... See fork man page for details... `my $pid = fork(); if ($pid ==0) { unless(fork){ print "Child launched!\n"; exec"/bin/sleep 10"; # server process exit 0; } exit 0; } waitpid($pid,0); $pid=$pid+1; // cheating process ids are 1+ what we think they a +re print "Child PID: $pid\n"; push @pidArray, $pid; }` [download] Thanks guys! ---- Zak "There is no room in this country for hyphenated Americanism" ~ Theodore Roosevelt (1915)	[reply] [d/l]

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Re: Re: How do I get the process ID from a system("x &") call?
by zakzebrowski (Curate) on Sep 19, 2002 at 18:08 UTC

Update

my $pid = fork();
  if ($pid ==0)
    {
      unless(fork){ 
      print "Child launched!\n";
      exec"/bin/sleep 10"; # server process
      exit 0;
      }
      exit 0;
    }
  waitpid($pid,0);
      $pid=$pid+1; // cheating process ids are 1+ what we think they a
+re
      print "Child PID: $pid\n";
      push @pidArray, $pid;
}
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