| servent.c | list all the services and their port numbers |
| protoent.c | list all the protocol names and their protocol numbers |
| gethostname.c | translates host names into IP addresses |
| gethostaddr.c | translates IP addresses into host names |
| daytimetcpsrv1.c | the TCP daytime server |
| daytimetcpcli1.c | the TCP daytime client |
| dgramsrvr.c | the UDP daytime server |
| dgramclnt.c | the UDP daytime client |