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uname (3)
  • uname (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
  • uname (1) ( FreeBSD man: Команды и прикладные программы пользовательского уровня )
  • uname (1) ( Русские man: Команды и прикладные программы пользовательского уровня )
  • uname (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
  • uname (1) ( POSIX man: Команды и прикладные программы пользовательского уровня )
  • uname (2) ( Solaris man: Системные вызовы )
  • uname (2) ( Русские man: Системные вызовы )
  • uname (2) ( Linux man: Системные вызовы )
  • uname (3) ( FreeBSD man: Библиотечные вызовы )
  • >> uname (3) ( POSIX man: Библиотечные вызовы )
  • uname (8) ( Русские man: Команды системного администрирования )
  •  

    NAME

    uname - get the name of the current system
     
    

    SYNOPSIS

    #include <sys/utsname.h>

    int uname(struct utsname *name);
     

    DESCRIPTION

    The uname() function shall store information identifying the current system in the structure pointed to by name.

    The uname() function uses the utsname structure defined in <sys/utsname.h>.

    The uname() function shall return a string naming the current system in the character array sysname. Similarly, nodename shall contain the name of this node within an implementation-defined communications network. The arrays release and version shall further identify the operating system. The array machine shall contain a name that identifies the hardware that the system is running on.

    The format of each member is implementation-defined.  

    RETURN VALUE

    Upon successful completion, a non-negative value shall be returned. Otherwise, -1 shall be returned and errno set to indicate the error.  

    ERRORS

    No errors are defined.

    The following sections are informative.  

    EXAMPLES

    None.  

    APPLICATION USAGE

    The inclusion of the nodename member in this structure does not imply that it is sufficient information for interfacing to communications networks.  

    RATIONALE

    The values of the structure members are not constrained to have any relation to the version of this volume of IEEE Std 1003.1-2001 implemented in the operating system. An application should instead depend on _POSIX_VERSION and related constants defined in <unistd.h>.

    This volume of IEEE Std 1003.1-2001 does not define the sizes of the members of the structure and permits them to be of different sizes, although most implementations define them all to be the same size: eight bytes plus one byte for the string terminator. That size for nodename is not enough for use with many networks.

    The uname() function originated in System III, System V, and related implementations, and it does not exist in Version 7 or 4.3 BSD. The values it returns are set at system compile time in those historical implementations.

    4.3 BSD has gethostname() and gethostid(), which return a symbolic name and a numeric value, respectively. There are related sethostname() and sethostid() functions that are used to set the values the other two functions return. The former functions are included in this specification, the latter are not.  

    FUTURE DIRECTIONS

    None.  

    SEE ALSO

    The Base Definitions volume of IEEE Std 1003.1-2001, <sys/utsname.h>  

    COPYRIGHT

    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 .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    EXAMPLES
    APPLICATION USAGE
    RATIONALE
    FUTURE DIRECTIONS
    SEE ALSO
    COPYRIGHT


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