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CHAPTER 5
Administering Network Services

Checking on Remote System Status
Logging In to a Remote System (rlogin)
Transferring Files Between Systems (rcp, ftp)
Administering NIS+ Databases (solstice)

THIS CHAPTER CONTAINS INFORMATION ABOUT CHECKING ON REMOTE SYSTEM status, logging in to a remote system, transferring files between systems, and administering the Network Information Service Plus (NIS+) databases.

Checking on Remote System Status

This section describes commands you use to find out the status of remote systems: rup, ping, and rpcinfo -d.

Determining How Long a Remote System Has Been Up (rup)

To find out how long a system has been up and the load average, type rup system-name and press Return. The host name, uptime, and load average are displayed:

oak% rup ash
ash    up 59 days,  3:42, load average: Ø.12, Ø.12, Ø.Ø1
oak%

You can also display a list of all remote hosts in the subnet by typing rup and pressing Return. If you display a list, you can use the options shown in Table 5-1 to sort the output.

Table 5-1 Options to the rup Command
Option Description
-h Sorts the display alphabetically by host name
-l Sorts the display alphabetically by load average
-t Sorts the display by uptime

In this example, the output is sorted alphabetically by host name: 

oak% rup -h
ash    up  1 day,   1:42,   load average: Ø.ØØ, Ø.31, Ø.34

elm    up 14 days,  Ø min,  load average: Ø.Ø7, Ø.Ø1, Ø.ØØ

maple  up 32 days,  14:39,  load average: Ø.21, Ø.Ø5, Ø.ØØ

oak    up  8 days,  15:44,  load average: Ø.Ø2, Ø.ØØ, Ø.ØØ
oak%

Determining Whether a Remote System Is Up (ping, rup, rpcinfo -p)

Follow these steps to determine whether a remote system is up:

1.  Type ping system-name and press Return. The message system-name is alive means the system is accessible over the network. The message ping: unknown host system-name means the system name is not known on the network. The message ping: no answer from system-name means the system is known on the network but is not up at this time.
2.  Type rup system-name and press Return. Information about how long the system has been up and the load average is displayed.
3.  Type rpcinfo -p system-name and press Return. Information about RPC services is displayed.
4.  Type rlogin system-name and press Return. You are logged in to the remote system. 
     cinderella% ping drusilla
     drusilla is alive
     cinderella% rup drusilla
        drusilla    up  3 days,  15:10;   load average: 0.07, 0.08, 0.09
     cinderella% rpcinfo -p drusilla
     program  vers proto port  service
     100000    3   udp    111  portmapper
     100000    2   udp    111  portmapper
     100000    3   tcp    111  portmapper
     100000    2   tcp    111  portmapper
     100007    3   tcp   1029  ypbind
     100007    3   udp   1025  ypbind
     100021    1   tcp   1030  nlockmgr
     100021    1   udp   1026  nlockmgr
     100024    1   tcp   1028  status
     100024    1   udp   1027  status
     100021    3   tcp   1030  nlockmgr
     100021    3   udp   1026  nlockmgr
     100020    2   tcp   4045  llockmgr
     100020    2   udp   4045  llockmgr
     100021    2   tcp   1030  nlockmgr
     100021    2   udp   1026  nlockmgr
     100087   10   udp   1031  adm_agent
     100011    1   udp   1034  rquotad
     100002    1   udp   1037  rusersd
     100002    2   udp   1037  rusersd
     100012    1   udp   1041  sprayd
     100008    1   udp   1043  walld
     100001    2   udp   1046  rstatd
     100001    3   udp   1046  rstatd
     100001    4   udp   1046  rstatd
     100068    2   udp   1049  cmsd
     100068    3   udp   1049  cmsd
     100083    1   tcp   4049
     cinderella% rlogin drusilla
     Password:
     Last login: Mon Mar  2 10:31:55 from cinderella
     drusilla%

You can also use ping with a system's IP address by typing ping IP-address and pressing Return. The message IP-address is alive means the system is accessible over the network. The message ping: no answer from IP-address means the system is not available to the network. The message ping: unknown host IP-address means the system name is not known on the network:

oak% ping 129.144.52.119
129.144.52.119 is alive
oak% ping 129.137.67.234
ping: unknown host 129.137.67.234
oak% ping 129.145.52.119
ping: no answer from 129.145.52.119
oak%

Logging In to a Remote System (rlogin)

Follow these steps to log in to a remote system:

1.  Type rlogin system-name and press Return. You may be prompted for a password.
2.  If you have a local account on that system, type your local password. Otherwise, type your NIS+ password. Unless you have a home directory that is accessible on the remote system (because it is local on that system, or because it is hard-mounted or automounted), you log in to the root (/) directory: 
     oak% rlogin ash
     Password:
     No directory!  Logging in with home=/
     Last login: Tue Sep 17 13:54:28 from 129.144.52.119
     Sun Microsystems, Inc. SunOS 5.0 June 1992.
     ash%

Transferring Files Between Systems (rcp, ftp)

If the automounter is set up for your site, you can transfer files between systems by using commands such as cp and mv. This section describes how to use the rcp and ftp commands to transfer files between systems.


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