You can just (assuming only adding at end) open the file for appending instead of clobbering /replcacing it: 
open FILE, ">>", "d:\\swift\\file.tmp";
print FILE 'Add Some Text at last';;
close FILE;

[download]
see perldoc -f open for details on the differnt MODE values.

In reply to Re: Add Contents At last in a File by davidrw
in thread Add Contents At last in a File by swift

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