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    use POSIX 'setsid';
    use Cwd 'chdir';
    
    sub daemon_init {
    
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        my $pid = fork;
        exit 0 if $pid;
        exit 1 if not defined $pid;
    
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        setsid();
        $pid = fork;
        exit 0 if $pid;
        exit 1 if not defined $pid;
    
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        chdir '/' or die $!;
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        umask 0;
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        close $_ for @_;
    }