This chapter describes the tasks required to display and change the most common system information. This is a list of the step-by-step instructions in this chapter.
The following table describes commands that enable you to display general system information.
Table 15–1 Commands for Displaying System Information
Command |
Man Page |
System Information Displayed |
---|---|---|
psrinfo |
Processor type |
|
isainfo |
Supported applications and it reports the number of bits supported by native applications on the running system, which can be passed as a token to scripts |
|
showrev |
Hostname, host ID, release, kernel architecture, application architecture, hardware provider, domain, and kernel version |
|
uname |
Operating system name, release, and version; node name; hardware name; processor type |
|
hostid |
Host ID number |
|
prtconf |
Installed memory |
|
date |
Date and time |
Currently, the only platform capable of supporting the 64–bit Solaris operating environment is an UltraSPARC system. To verify if a system is an UltraSPARC system, use the following command:
$ uname -m sun4u |
If the output of the uname -m command is sun4u, then the machine is an UltraSPARC system.
If you are running the Solaris 9 release, you can verify that the machine is an UltraSPARC system by using the psrinfo command:
# psrinfo -v Status of processor 0 as of: 05/30/01 13:48:46 Processor has been on-line since 05/18/01 10:02:40. The sparcv9 processor operates at 333 MHz, and has a sparcv9 floating point processor. |
If the processor type is sparcv9, the platform is capable of running the 64-bit Solaris operating environment. This test does not work on previous versions of the psrinfo command, where all platforms report the less precise sparc as the processor type.
Use the isainfo command to determine if a system has 64-bit capabilities enabled, which means that the system is booted with the 64–bit kernel.
The output for an UltraSPARC system running a 32-bit kernel appears as follows:
$ isainfo -v 32-bit sparc applications |
This output means that this system is capable of supporting only 32-bit applications.
The output for an UltraSPARC system running a 64-bit kernel appears as follows:
$ isainfo -v 64-bit sparcv9 applications 32-bit sparc applications |
This output means that this system is capable of supporting both 32-bit and 64-bit applications.
Use the isainfo -b command to display the number of bits supported by native applications on the running system.
The output from a SPARC, IA, or UltraSPARC system running the 32–bit Solaris operating environment appears as follows:
$ isainfo -b 32 |
The output from a 64–bit UltraSPARC system running the 64–bit Solaris operating environment appears as follows:
$ isainfo -b 64 |
The command returns 64 only. Even though a 64–bit UltraSPARC system is capable of running both types of applications, 64–bit applications are the best kind of applications to run on a 64–bit system.
To display system information and software release information, use the showrev command.
$ showrev [-a] |
The -a option displays all available system information.
The following example shows the showrev command output.
$ showrev -a Hostname: starbug Hostid: nnnnnnnn Release: 5.9 Kernel architecture: sun4u Application architecture: sparc Hardware provider: Sun_Microsystems Domain: solar.com Kernel version: SunOS 5.9 May 2002 OpenWindows version: X11 Version 6.4.2 11 April 2001 No patches are installed $ |
To display system information, use the uname command.
$ uname[-a] |
The -aoption displays the operating system name as well as the system node name, operating system release, operating system version, hardware name, and processor type.
The following example shows the uname command output.
$ uname SunOS $ uname -a SunOS starbug 5.9 Generic sun4u sparc SUNW,Ultra-5_10 $ |
To display the host ID number in hexadecimal format, use the hostid command.
$ hostid |
The following example shows sample output from the hostid command.
$ hostid 80a5d34c |
To display the amount of memory installed on your system, use the prtconf command.
$ prtconf [| grep Memory] |
The grep Memory command selects output from the prtconf command to display memory information only.
The following example shows sample output from the prtconf command.
# prtconf | grep Memory Memory size: 128 Megabytes |
To display the current date and time according to your system clock, use the date command.
$ date |
The following example shows sample output from the date command.
$ date Thu May 31 17:44:58 MDT 2001 $ |
This section describes commands that enable you to change general system information.
Enter the new date and time.
# date mmddHHMM[[cc]yy] |
mm |
Month, using two digits. |
dd |
Day of the month, using two digits. |
HH |
Hour, using two digits and a 24-hour clock. |
MM |
Minutes, using two digits. |
cc |
Century, using two digits. |
yy |
Year, using two digits. |
See date(1) for more information.
Verify that you have reset your system's date correctly by using the date command with no options.
The following example shows how to use the date command to manually set a system's date and time.
# date Thu Jun 21 13:59:15 MDT 2001 # date 0621141001 Thu Jun 21 14:10:00 MDT 2001 |
Edit the message-of-the-day file, /etc/motd, to include announcements or inquiries to all users of a system when they log in. Use this feature sparingly, and edit this file regularly to remove obsolete messages.
Edit the /etc/motd file and add a message of your choice.
Edit the text to include the message that will be displayed during user login. Include spaces, Tabs, and Returns.
Verify the changes by displaying the contents of the /etc/motd file.
$ cat /etc/motd Welcome to the UNIX Universe. Have a nice day. |
The default message-of-the-day, provided when you install Solaris software, contains SunOS version information:
$ cat /etc/motd Sun Microsystems Inc. SunOS 5.9 Generic May 2002 |
The following example shows an edited /etc/motd file that provides information about system availability to each user who logs in.
$ cat /etc/motd The system will be down from 7:00 a.m to 2:00 p.m. on Saturday, July 7, for upgrades and maintenance. Do not try to access the system during those hours. Thank you. |
A system's host name is specified in several different locations.
Remember that you will need to update your name service database to reflect the new host name.
Become superuser.
Change the system's host name in the following files:
/etc/nodename
/etc/hostname.xxy
/etc/inet/hosts
/etc/net/ticlts/hosts
/etc/net/ticots/hosts
/etc/net/ticotsord/hosts
(Optional) If using a name service, change the system's host name in the hostfile.
Reboot the system to activate the new host name.
# init 6 |