for i in /lib/libc.a /usr/lib/libdbm.a /usr/lib/libcbt.a /usr/lib/libmp.a \ /lib/libdk.a /usr/lib/libtermcap.a do libcontents $i done sed 's/ .*//' man[23].index | sort -u >man23.index sort -u *.list >man23.list #man23.list begins empty comm -3 man23.index man23.list >man23.comm