-sed 's/UTAH/XYZ/g' <records/esdd0002.grs >records/esdd0002x.grs
-mv records/esdd0002x.grs records/esdd0002.grs
-touch -r timeref1 records/esdd0002.grs # reset timestamp to 'early'
+sed 's/UTAH/XYZ/g' <$pp/records/esdd0002.grs >$pp/records/esdd0002x.grs
+mv $pp/records/esdd0002x.grs $pp/records/esdd0002.grs
+touch -r timeref1 $pp/records/esdd0002.grs # reset timestamp to 'early'