ref: a2a41a8e359dca5295c43dc2c2408094b96c3e0c dir: /testdir/t.pp1/
/bwk/,/bwk/ { print $2, $1 } /ava/,/ava/ { print $2, $1 } /pjw/,/pjw/ { print $2, $1 }