uname - Displays information about the operating system
uname [-S system-name]
The uname command displays system information or sets the system name.
Interfaces documented on this reference page conform to industry standards
uname: XCU5.0, SVID 4
Refer to the standards(5) reference page for more information about indus-
try standards and associated tags.
-a Displays all information specified with the -m, -n, -r, -s, and -v
-m Displays the type of hardware running the system.
-n Displays the name of the node (this may be a name that the system is
known by to a communications network).
-p [Tru64 UNIX] Displays the processor type of the current host.
-r Displays the release number of the operating system.
-s Displays the name of the implementation of the operating system. (This
option is on by default.)
[Tru64 UNIX] Changes the name of the system to system_name. The
system_name argument is restricted to SYS_NMLN-1 characters. The value
of SYS_NMLN is implementation specific and is defined in
/usr/include/sys/utsname.h. Only users with appropriate privileges can
use this option.
-v Displays the operating system version.
The uname command writes system information to standard output. This com-
mand is used primarily to determine which system you are using. The
options cause selected information returned by the uname() call to be
1. When the -a option is used, output is displayed in the order:
<system> <node> <release> <version> <hardware>
When you request information by specifying the individual options, the
appropriate information is displayed in the order indicated.
[Tru64 UNIX] If the -p option is used, processor information is
appended to the output line.
2. The output of uname may include embedded blank spaces, so you should
use caution when passing the output to parsing algorithms.
The following exit values are returned:
0 The requested information has been successfully written.
>>0 An error occurred.
To display the complete system name and version banner, enter:
The following environment variables affect the execution of uname:
Provides a default value for the internationalization variables that
are unset or null. If LANG is unset or null, the corresponding value
from the default locale is used. If any of the internationalization
variables contain an invalid setting, the utility behaves as if none of
the variables had been defined.
If set to a non-empty string value, overrides the values of all the
other internationalization variables.
Determines the locale for the interpretation of sequences of bytes of
text data as characters (for example, single-byte as opposed to multi-
byte characters in arguments).
Determines the locale for the format and contents of diagnostic
messages written to standard error.
Determines the location of message catalogues for the processing of
System name information header file.
Node specific configuration file.