# FILENAME: update1if [ -z $1 ]    then echo "$0 <filename>"    echo "(e.g.)  $0 cpi"    exitfiecho "$HOSTNAME"  > hostsecho "$HOSTNAME 0 $PWD/$1"  > pgfilefor m in 69 67 70do          rcp $1 cn$m:$PWD    echo "rcp $1 cn$m:$PWD"    echo "cn$m" >> hosts    echo "cn$m 1 $PWD/$1" >> pgfiledone