The BEDTools utilities allow one to address common genomics tasks such as
 finding feature overlaps and computing coverage. The utilities are largely
 based on four widely-used file formats: BED, GFF/GTF, VCF, and SAM/BAM. Using
 BEDTools, one can develop sophisticated pipelines that answer complicated
 research questions by streaming several BEDTools together.
 .
 The groupBy utility is distributed in the filo package.