You are using sort incorrectly.

sort returns the sorted array, it does not sort the array.

See example below: 

perl -e '@a=(1,5,3);@b=sort @a; print "@a\n"; print "@b\n";'

[download]
with output 
1 5 3
1 3 5

[download]

In reply to Re: Sort textfile by Sandy
in thread Sort textfile by Anonymous Monk

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