if the line1 in file 1 contain: izetbegovic slobodan milosevic someday serbian peace

your program put these words in %uniq1 as key

line2 in file 2 : slobodan serbian peace serbs bosnia milosevic

you put this line in @match

now you grep $uniq1{$_} with @match, here you don't compare the line from @match with a line from the file1, but you campare it with all the word contained in file, and what i want is to compare line by line

may be i'm not correct!?

In reply to Re^16: compare two text file line by line, how to optimise by thespirit
in thread compare two text file line by line, how to optimise by thespirit

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