ref: 2bab10b60b3f4d3bbefdcb60410655f317d1a452 dir: /testdir/t.pp1/
/bwk/,/bwk/ { print $2, $1 } /ava/,/ava/ { print $2, $1 } /pjw/,/pjw/ { print $2, $1 }