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Full Discussion: Building intervals
Top Forums UNIX for Dummies Questions & Answers Building intervals Post 302904425 by Scrutinizer on Wednesday 4th of June 2014 05:18:54 AM
Old 06-04-2014
You could first print an empty line when column 4 is not "hom". Then pipe that output to another awk which uses empty lines as a record separator then the start is in $2 (field 2) and the last is in $(NF-2)..

An alternative is to use a single awk and to start new array item each time $4 equals "hom" for the first time and then do the calculations and the printing in the END section...
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