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uname(1)
NAME
  uname - Displays information about the operating system

SYNOPSIS
  uname [-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 standards
  as follows:

  uname:  XCU5.0, SVID 4

  Refer to the standards(5) reference page for more information about
  industry standards and associated tags.

OPTIONS
  -a  Displays all information specified with the -m, -n, -r, -s, and -v
      options.

  -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.)

  -S system-name
      [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.

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
   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.

EXIT STATUS
  The following exit values are returned:

  0   The requested information has been successfully written.

  >0  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:

  LANG
      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.

  LC_ALL
      If set to a non-empty string value, overrides the values of all the
      other internationalization variables.

  LC_CTYPE
      Determines the locale for the interpretation of sequences of bytes of
      text data as characters (for example, single-byte as opposed to
      multibyte characters in arguments).

  LC_MESSAGES
      Determines the locale for the format and contents of diagnostic
      messages written to standard error.

  NLSPATH
      Determines the location of message catalogues for the processing of
      LC_MESSAGES.

FILES
  /usr/include/sys/utsname.h
      System name information header file.

  /etc/rc.config
      Node specific configuration file.

SEE ALSO
  Functions:  uname(2)

  Standards:  standards(5)

Index for Section 1

Alphabetical listing for U

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