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vinian@cc:~$ echo "Just another perl monker" | perl -w -lane 'print $F
+[0..3]'
Argument "" isn't numeric in array element at -e line 1, <> line 1.
...
vinian@cc:~$ echo "Just another perl monker" | perl -w -lane 'print $F
+[3..3]'
Argument "" isn't numeric in array element at -e line 1, <> line 1.
Just