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  1. or download this
    if( @ARGV ){
    $SIG{INT} = \&exit_gracefully;
...
    exit (2);
}
__END__
  2. or download this
    C:\>perl \dev\loose\perlfunc.exit.pl
calling system
...
C:\>called Program interrupted ..

C:\>
  3. or download this
    user@host:~$ perl perlfunc.exit.pl
calling system
...
user@host:~$
user@host:~$