uname(1)uname(1)NAMEuname - Displays information about the operating system
SYNOPSISuname [-amnrsvp]
uname [-S system-name]
The uname command displays system information or sets the system name.
STANDARDS
Interfaces documented on this reference page conform to industry stan‐
dards as follows:
uname: XCU5.0, SVID 4
Refer to the standards(5) reference page for more information about
industry standards and associated tags.
OPTIONS
Displays all information specified with the -m, -n, -r, -s, and -v
options. Displays the type of hardware running the system. Displays
the name of the node (this may be a name that the system is known by to
a communications network). [Tru64 UNIX] Displays the processor type
of the current host. Displays the release number of the operating sys‐
tem. 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 spe‐
cific and is defined in /usr/include/sys/utsname.h. Only users with
appropriate privileges can use this option. Displays the operating
system version.
OPERANDS
None
DESCRIPTION
The uname command writes system information to standard output. This
command is used primarily to determine which system you are using. The
options cause selected information returned by the uname() call to be
displayed.
The uname command prints out only the major.minor and not the variant.
For example, with 5.1A, it prints out just 5.1. To know the variant,
it is suggested to use the command sizer -v.
NOTES
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. The output of uname may include
embedded blank spaces, so you should use caution when passing
the output to parsing algorithms.
EXIT STATUS
The following exit values are returned: The requested information has
been successfully written. An error occurred.
EXAMPLES
To display the complete system name and version banner, enter: uname-a
ENVIRONMENT VARIABLES
The following environment variables affect the execution of uname: Pro‐
vides 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 vari‐
ables contain an invalid setting, the utility behaves as if none of the
variables had been defined. If set to a non-empty string value, over‐
rides 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. Deter‐
mines the location of message catalogues for the processing of LC_MES‐
SAGES.
FILES
System name information header file. Node specific configuration file.
SEE ALSO
Functions: uname(2)
Standards: standards(5)uname(1)
