Given a colon-separated file, how do you count the number of lines with an identical second field that have different third fields? For example, if you gave it: 
fruit:apple:cox
fruit:apple:pippin
fruit:apple:granny
fruit:banana:yellow
fruit:banana:green

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It would come back with: 
apple 3
banana 2

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In reply to Counting lines by content by willa

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