awk -F":" -v A=$(wc -l < /etc/passwd) '
    BEGIN   {
            NUM_PAGES=A/10+1
            print "--------------------------------------------------"
            printf "%-20s %-20s %-3s\n","USERNAME","GUID","DIRECTORY"
            print "--------------------------------------------------"
            }

   !(NR%10) {
             PAGE++
             printf "--- Page %d of %d ---",PAGE,NUM_PAGES
             getline rc < "-"; system("tput cuu1")
            }

   (NR==FNR){
            B[$3]=$1
            next } $4 in B { $4=B[$4]
            }


            { printf "%-20s %-20s %-3s\n", $1, $4, $7 }

' /etc/group /etc/passwd