#!/bin/sh

scadir=/afs/athena.mit.edu/activity/s/sca
mv $scadir/.anyone $scadir/.anyone~
mv $scadir/.anyold $scadir/.anyold~
mv $scadir/.anynew $scadir/.anynew~

cp $1 $scadir/.anyone
comm -12 $1 $2 > $scadir/.anyold
comm -13 $1 $2 > $scadir/.anynew