The until modifier repeatedly executes the second expression as long as the first expression is false.

  

#Format: Expression2 until Expression1;

$x=1;
print $x++,"\n" until $x == 5;

1.	A program that uses the until statement.
2.	Average-sales problem with sentinel-controlled repetition
3.	Controlling Loop Flow
4.	Looping Until
5.	The until Loop
6.	The until statement
7.	Use until to read user input
8.	Using until with print statement
9.	until statement
10.	until with continue
11.	until with diamond operator
12.	until with integer

The until modifier repeatedly executes the second expression as long as the first expression is false. : Until « Statement « Perl