perltutorial
root
Unless statements allow you to say unless something is true do this.
For example:<BR>
<PRE>
$value=20;
unless($divisor==0){ #so long as the $divisor isn't equal to 0
$value=$value/$divisor; #go ahead and divide $value by $divisor
} else {
$divisor=1; #otherwise set $divisor to 1
}
</PRE>
If you've got that I suggest you take a look at [while loops]