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— Appendix C — Commands The commands associated with the TCP/IP utilities mentioned in this book are summarized in the following list. Refer to the Index for their occurrences throughout the text. arp View or update the Address Resolution Protocol tables finger View the list of users logged on the network ftp Invoke the file transfer protocol program ifconfig View or configure network interface parameters mount Mount a directory or filesystem onto the local file structure, or view a list of mounted directories or filesystems netstat Display network statistics nfsstat View statistics on NFS usage and configuration nslookup Look up IP addresses and associated information through a Domain Name Server ping Send an ICMP echo message to a remote system to test connectivity rlogin Log in to a remote host rpcinfo Display information about active processes ruptime Display the total time a system has been functioning and its current load showmount View all servers currently mounted spray Send a batch of UDP datagrams to a remote system to check connectivity and throughput telnet Log in to a remote host traceroute Display messages from routers along the path of a set of test datagrams ypcat Display the contents of a Network Information Service database ypmatch Look up an entry in a Network Information Service database |