yp

yp -h

yp converts ipv4 from bin->dec and vice versa. You can provide as many ips as you want, as args
ex:
        yp -b 11111111.11111111.11111111.11111111 11111111.00000000.11111111.00000000 ... [bin->dec]
        yp -d 255.255.255.255 127.0.0.1 192.168.192.168 ... [dec->bin]
        yp -v [for verbose output]