Sun Microsystems Sun Workstation 100U System Manager's Manual page 156

INTRO( 8)
MAINTENANCE COMMANDS INTRO (8)
NAME
intro - introduction to system maintenance and operation commands
DESCRIPTION
This section contains information related to system bootstrapping, operation and maintenance
and describes all the server processes and daemons which run on the system.
Disk formatting and labelling is done by diag(8S) which participates in most system bootstraps.
Bootstrapping of the system is described in reboot(8). The standard set of commands run by the
system when it boots
is
described in rc(8). Related commands include ones to check the con-
sistency of file systems Jsck(8), mount and unmount file systems mount(8) and umount(8), add
swap devices swapon(8), cause all outstanding disk I/O to complete sync(8), shutdown or reboot a
running system
ehutdown(8), halt(8),
and
reboot(8),
set the time on a machine from the time on
another machine rdate(8).
Creation of file systems is discussed in mkJs(8) and newJs(8). File system performance parameters
are adjustable with tuneJs(8). File system saves and restores are described in dump(8) and
restore(8).
Procedures for adding new users to a system are described in adduser(8) using vipw(8).
Other programs useful when the system crashes or hardware is broken include gztest(8S) which
tests the frame buffer on a workstation, imemtest(8S) which tests the memory, crash(8S) which
describes what happens when the system crashes, s/Jvecore(8) and analyze(8) which can be used to
analyze system crash dumps. Occasionally useful as adjuncts to the Jsck(8) file system repair pro-
gram are clri(8), dcheck(8), icheck(8), and ncheck(8).
Configuring a new version of the UNIX kernel requires using the program config(8); major system
bootstraps often require the use of mkproto(8). New devices are made in the /dev directory when
device drivers are added tp the system by using the m/Jkedev(8) and mknod(S) commands. If you
have sOurce, you will use the install(8) command to reinstall freshly compiled programs, and cat-
man(8) to reformat the pre-formatted version of the manual.
Resource accounting is
enabled by the accton(8) command, and summarized by sa(8). Login time
accounting
is
performed by ac(S).
A number of service and daemon processes are described here. The cron(S) daemon forces
delayed disk I/O to occur and runs periodic events (such as removing temporary files from the
disk periodically). The dmesg(8) process is invoked by cron and keeps the system error log. The
init(S) process is the initial process created when UNIX boots and manages the reboot process and
creates the initial login prompts on the various system terminals through the services of getty(S).
The Internet super-server inetd(SC) invokes all other internet servers as needed. These servers
include the remote shell servers rshd(SC) and rezccd(SC) the remote login server rlogind(SC) the
FTP and TELNET daemons Jtpd(SC) and telnetd(8C), the TFTP daemon tJtpd(SC) and the mail
arrival notification daemon comsat(SC). Other network daemons include the 'load average/who is
logged in' daemon rwhod(SC), the routing daemon routed(8C), and the mail daemon sendmail(8).
If network protocols are being debugged, then the protocol debugging trace program
trpt(SC) is
often useful. Remote magnetic tape access is
provided by reh and rmt(SC). Remote line printer
access is provided by lpd(8) and control over the various print queues is had through Ipc(8).
Printer cost accounting is
done through pac(8).
Network host tables may be gotten from the ARPA NIe using gettable{8C) and converted to
UNIX usable format using htable(8).
Sun Release 1.1
Last change: 9 March 1984
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