Try this: 

#! perl -slw
use strict;
use 5.010;
use Time::HiRes qw[ time sleep ];

$|++;

$SIG{ INT } = sub  {
     state $last = 0;
     if( ( time - $last ) > 2 ) {
         $last = time;
         return;
     }
     die 'Interupted by ^C^C';
};

while( 1 ) {
    printf "\rtum te tum: %f", time;
    sleep 0.1;
}

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With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Force 2 'ctrl-c's to kill program by BrowserUk
in thread Force 2 'ctrl-c's to kill program by albob

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