NAME
uname - print name of current system
SYNOPSIS
uname [-aimnprsvX]
uname [-S system_name]
DESCRIPTION
The uname utility prints information about the current sys-
tem on the standard output. When options are specified, sym-
bols representing one or more system characteristics will be
written to the standard output. If no options are specified,
uname prints the current operating system's name. The
options print selected information returned by uname(2),
sysinfo(2), or both.
OPTIONS
The following options are supported:
-a Prints basic information currently available
from the system.
-i Prints the name of the platform.
-m Prints the machine hardware name (class).
Use of this option is discouraged. Use uname
-p instead. See NOTES section below.
-n Prints the nodename (the nodename is the
name by which the system is known to a com-
munications network).
-p Prints the current host's ISA or processor
type.
-r Prints the operating system release level.
-s Prints the name of the operating system.
This is the default.
SunOS 5.10 Last change: 17 Sep 2003 1
User Commands uname(1)
-S system_name The nodename may be changed by specifying a
system name argument. The system name argu-
ment is restricted to SYS_NMLN characters.
SYS_NMLN is an implementation specific value
defined in . Only the super-
user is allowed this capability. This change
does not persist across reboots of the sys-
tem. Use sys-unconfig(1M) to change a host's
name permanently.
-v Prints the operating system version.
-X Prints expanded system information, one
information element per line, as expected by
SCO UNIX. The displayed information
includes:
o system name, node, release, version,
machine, and number of CPUs.
o BusType, Serial, and Users (set to
"unknown" in Solaris)
o OEM# and Origin# (set to 0 and 1,
respectively)
EXAMPLES
Example 1: Printing the OS name and release level
The following command:
example% uname -sr
prints the operating system name and release level,
separated by one character.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment
variables that affect the execution of uname: LANG, LC_ALL,
LC_CTYPE, LC_MESSAGES, and NLSPATH.
SYSV3 This variable is used to override the default
behavior of uname. This is necessary to make it
possible for some INTERACTIVE UNIX Systems and SCO
UNIX programs and scripts to work properly. Many
SunOS 5.10 Last change: 17 Sep 2003 2
User Commands uname(1)
scripts use uname to determine the SYSV3 type or
the version of the OS to ensure software is compa-
tible with that OS. Setting SYSV3 to an empty
string will make uname print the following default
values:
nodename nodename 3.2 2 i386
The individual elements that uname displays can
also be modified by setting SYSV3 in the following
format:
os,sysname,node,rel,ver,mach
os Operating system (IUS or SCO).
sysname System name.
node Nodename as displayed by the -n
option.
rel Release level as displayed by the
-r option.
ver Version number as displayed by the
-v option.
mach Machine name as displayed by -m
option.
Do not put spaces between the elements. If an ele-
ment is omitted, the current system value will be
used.
EXIT STATUS
SunOS 5.10 Last change: 17 Sep 2003 3
User Commands uname(1)
The following exit values are returned:
0 Successful completion.
>0 An error occurred.
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