Re: Forking problems

Here is a little example of using fork():

if(my $pid = fork){
    print "I am the parent my pid is $$ and my child has pid: $pid\n";
}
elsif(defined $pid and $pid == 0){
    print "I am the child and my pid is $$\n";
}
else{
    print "Oh no :-(\n";
}
[download]

Update: Oops fixed bug pointed out by pc88mxer below.

Comment on Re: Forking problems Download Code

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Re^2: Forking problems by pc88mxer (Vicar) on Mar 21, 2008 at 17:00 UTC
`undef` will evaluate to 0 in numeric context, so you'll really want: `if (!defined(my $pid = fork)) { print "Oh no\n"; } elsif ($pid == 0) { print "in child\n"; } else { print "in parent\n"; }` [download]	[reply] [d/l] [select]
Re^2: Forking problems by ikegami (Patriarch) on Mar 22, 2008 at 01:14 UTC
The `and $pid == 0` in your updated solution is redundant. It will always be true.	[reply] [d/l]