in reply to Count similar characters in a row

Try this,

perl -wle 'while(<>) { $count++ if "rrr" eq join "",(split)[1 .. 3] };
print $count' my_column_file.txt

3

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Re^2: Count similar characters in a row
by jwkrahn (Abbot) on Oct 06, 2010 at 16:00 UTC 
    perl -lane '$count++ if "rrr" eq join "",@F[1 .. 3] }{ print $count' m
+y_column_file.txt

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[d/l]

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