Plan 9 from Bell Labs’s /usr/web/sources/patch/applied/sokoban-multistep/mkfile.new
</$objtype/mkfile BIN=/$objtype/bin/games TARG=sokoban OFILES=\ sokoban.$O\ move.$O\ graphics.$O\ level.$O\ route.$O\ HFILES=sokoban.h\ UPDATE=\ mkfile\ $HFILES\ ${OFILES:%.$O=%.c}\ `{ls /sys/games/lib/sokoban/*} </sys/src/cmd/mkone