ref: 7d562f0dff4db4ea7f7e91f462c4adf552b1b410 dir: /testdir/t.pp1/
/bwk/,/bwk/ { print $2, $1 } /ava/,/ava/ { print $2, $1 } /pjw/,/pjw/ { print $2, $1 }