Pro Perl Programming by William “Bo” Rothwell

Author:William “Bo” Rothwell
Language: eng
Format: epub
ISBN: 9781484256053
Publisher: Apress

$SIG{INT}='IGNORE'; #Ignore control-c

print "countdown!\n\n";

$|=1;

for ($i=10;$i>0;$i--) {

print "$i \r";

sleep 1;

}

$|=0;

print "Blast off!\n";

Try it!

Perform the following steps:

1.Execute the following command: sleep2.pl.

2.Soon after seeing "countdown" appear on the screen, attempt to stop the program by control-c.

3.Note the message that appears on the screen.

4.Soon after seeing "Can be stopped now!" appear on the screen, attempt to stop the program by control-c.

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