Just one easy but useful command to find the reason why you obtained an uninitialized value warning when processing, say, line 1,234,687 of your input.txt file:

$ perl -ne 'print if $. == 1234687' input.txt

Or, if your file is much longer than 1,234,687 lines:

$ perl -ne 'print and exit if $. == 1234687' input.txt

In reply to Re: trap run time errors by Laurent_R
in thread trap run time errors by kp2a

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