I believe the culprit is that you are opening File_3 in overwite > for every line of File_2. Either switch to append >>, or (better) move the File_23 opening to outside the loop. (On my phone, so no examples, sorry).

Oh, and use warnings; use strict;, and lexical filehandles (see open)

edit: fix file number

In reply to Re: Last value update is only happening instead of all. by pryrt
in thread Last value update is only happening instead of all. by anirbanphys

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