Appendix A

Tools reference

df

Reports the amount of free disk blocks on local disk divisions. See ``df -- report disk space usage'' and df(C) for more information. Also see the descriptions of the related commands: dfspace(C) and du(C).

ipcs

Reports the status of System V interprocess communication (IPC) facilities -- message queues, semaphores, and shared memory. See ipcs(ADM) for more information.

netstat

Reports on STREAMS usage and various network performance statistics. It is particularly useful for diagnosing if a network is overloaded or a network card is faulty. See netstat(TC) for more information. See also ndstat(ADM) which reports similar information.

nfsstat

Reports NFS statistics on NFS servers and clients. It is particularly useful for detecting problems with NFS configuration. See nfsstat(NADM) for more information.

ping

Can be used to test connectivity over a network. See ping(ADMN) for more information.

pipestat

Reports on the usage of ordinary and high performance pipes. See pipe(ADM) for more information.

ps

Reports on processes currently occupying the process table. See ``ps -- check process activity'' and ps(C) for more information.

sar

Samples the state of the system and provides reports about various system-wide activities. See ``sar -- system activity reporter'' and sar(ADM) for more information.

swap

Reports on the amount of available swap space or configures additional swap devices. See ``swap -- check and add swap space'' and swap(ADM) for more information.

timex

Reports on system resource usage during the execution of a command or program. See ``timex -- examine system activity per command'' and timex(ADM) for more information. See also the description of the related command, time(C).

traceroute

Traces the route that network packets take to reach a given destination. See traceroute(ADMN) for more information.

vmstat

Reports on process states, paging and swapping activity, system calls, context switches and CPU usage. See ``vmstat -- virtual memory statistics'' and vmstat(C) for more information.