Grandfather, I have a further question related to your suggestion. If I have hundres of lines of data like this:

tag1:xxxxxxx tag2:xxxxxx tag3:xxxxxxx tag4:yyyyy

How can I remove all lines that have the same tags 1 through 3 and replace it with a single line that has a new tag4? Currently I am able to remove all excess lines with the same tags 1 through 3 using your method but am unable to change tag4 because the hash method works by not writing subsequent values. Hence once I find out I have a duplicate it is too late to change it as the first has already been written. Any suggestions? Thanks!

In reply to Re^2: Checking LInes in Text File by Anonymous Monk
in thread Checking LInes in Text File by Anonymous Monk

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