Regex : How many times to match?

Place these modifiers after a character:

• + matches 1+ times
  
• * matches 0+ times
  
• {3} after a charater matches it 3 times
• {2,3} after a charater matches it 2 to 3 times

Greedy and Not Greedy

$x = "
 one 
 
 two 
";

#.* is greedy, so this matches from the first 
 to the last 

$x =~ m# 
 .* 
 #x

#.*? isn't greedy, so this matches 
 one  only

$x =~ m# 
 .*? 
 #x