!dir I:*;;
 Volume in drive I is RAMDISK
 Volume Serial Number is 7FFF-FFFF

 Directory of I:\

2007-02-21  22:12        20,971,522 fred
2007-02-21  22:14           985,570 fred2
               2 File(s)     21,957,092 bytes
               0 Dir(s)           1,024 bytes free
open O, '>', 'I:fred3';;
select O; $|++; select STDOUT;;
print O chr( 0 ) x 1000 or warn $!;;
print O chr( 0 ) x 25 or warn $!;;
No space left on device at (eval 6) line 1, <STDIN> line 5.