Originální popis anglicky:
uname - return system name
Návod, kniha: POSIX Programmer's Manual
uname [-snrvma]
By default, the
uname utility shall write the operating system name to
standard output. When options are specified, symbols representing one or more
system characteristics shall be written to the standard output. The format and
contents of the symbols are implementation-defined. On systems conforming to
the System Interfaces volume of IEEE Std 1003.1-2001, the
symbols written shall be those supported by the
uname() function as
defined in the System Interfaces volume of IEEE Std 1003.1-2001.
The
uname utility shall conform to the Base Definitions volume of
IEEE Std 1003.1-2001, Section 12.2, Utility Syntax Guidelines.
The following options shall be supported:
- -a
- Behave as though all of the options -mnrsv were
specified.
- -m
- Write the name of the hardware type on which the system is
running to standard output.
- -n
- Write the name of this node within an
implementation-defined communications network.
- -r
- Write the current release level of the operating system
implementation.
- -s
- Write the name of the implementation of the operating
system.
- -v
- Write the current version level of this release of the
operating system implementation.
If no options are specified, the
uname utility shall write the operating
system name, as if the
-s option had been specified.
None.
Not used.
None.
The following environment variables shall affect the execution of
uname:
- LANG
- Provide a default value for the internationalization
variables that are unset or null. (See the Base Definitions volume of
IEEE Std 1003.1-2001, Section 8.2, Internationalization
Variables for the precedence of internationalization variables used to
determine the values of locale categories.)
- LC_ALL
- If set to a non-empty string value, override the values of
all the other internationalization variables.
- LC_CTYPE
- Determine 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).
- LC_MESSAGES
- Determine the locale that should be used to affect the
format and contents of diagnostic messages written to standard error.
- NLSPATH
- Determine the location of message catalogs for the
processing of LC_MESSAGES .
Default.
By default, the output shall be a single line of the following form:
If the
-a option is specified, the output shall be a single line of the
following form:
"%s %s %s %s %s\n", <sysname>, <nodename>, <release>,
<version>, <machine>
Additional implementation-defined symbols may be written; all such symbols shall
be written at the end of the line of output before the <newline>.
If options are specified to select different combinations of the symbols, only
those symbols shall be written, in the order shown above for the
-a
option. If a symbol is not selected for writing, its corresponding trailing
<blank>s also shall not be written.
The standard error shall be used only for diagnostic messages.
None.
None.
The following exit values shall be returned:
- 0
- The requested information was successfully written.
- >0
- An error occurred.
Default.
The following sections are informative.
Note that any of the symbols could include embedded <space>s, which may
affect parsing algorithms if multiple options are selected for output.
The node name is typically a name that the system uses to identify itself for
inter-system communication addressing.
The following command:
writes the operating system name and release level, separated by one or more
<blank>s.
It was suggested that this utility cannot be used portably since the format of
the symbols is implementation-defined. The POSIX.1 working group could not
achieve consensus on defining these formats in the underlying
uname()
function, and there was no expectation that this volume of
IEEE Std 1003.1-2001 would be any more successful. Some
applications may still find this historical utility of value. For example, the
symbols could be used for system log entries or for comparison with operator
or user input.
None.
The System Interfaces volume of IEEE Std 1003.1-2001,
uname()
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
