... the increment of occurrence number is per line, how to make it per file or multipleline?

Move the  my $i = 1; statement to before the loop (untested): 

my $i = 1;
while (<DATA>) {
    ...
    s/\b(XP)\b/$1 . ' (' . $i++ . ')'/eg;
    print;
    }

[download]

Give a man a fish:  <%-{-{-{-<

In reply to Re^3: How to find a number and replace it with calculated value? by AnomalousMonk
in thread How to find a number and replace it with calculated value? by Lejocode

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