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A slightly different approach so as to replace each digit of the masked octets with an 'x' rather than the whole octet with a single 'X' just as an exercise.

$ perl -Mstrict -Mwarnings -E ' open my $inFH, q{<}, \ <<EOD or die $!; EOD print for map { s{ (\d+\.\d+) (?= (?:\.\d+){2} ) } { do{ my $c = $1; $c =~ tr{0-9}{x}; $c } }xeg; $_; } <$inFH>;' x.x.1.1 x.x.2.2 x.x.3.3 x.x.4.4 $

I hope this is of interest.



In reply to Re: Patternmatching IPaddresses by johngg
in thread Patternmatching IPaddresses by vyeddula

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