comment on

perl -ne 'if ( ++$x == 16 ){ print $_; $x = 0; }' <filename

Update: but only if the rest of the logic is simple enough for inclusion in a one-liner like this.

update2: modified to shift target line nos to 16,32 etc. - a weird brainbug made me think 1,17 etc. was wanted - I need a holiday, lol!

One world, one people

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