This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding Linux
manual page for details of Linux behavior), or the interface may not be
implemented on Linux.
sys/utsname.h — system name structure
header shall define the structure
which shall include at least the following members:
char sysname Name of this implementation of the operating system.
char nodename Name of this node within the communications
network to which this node is attached, if any.
char release Current release level of this implementation.
char version Current version level of this release.
char machine Name of the hardware type on which the system is running.
The character arrays are of unspecified size, but the data stored in them shall
be terminated by a null byte.
The following shall be declared as a function and may also be defined as a
The following sections are informative.
int uname(struct utsname *);
The System Interfaces volume of POSIX.1‐2008, uname()
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2013 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
7, Copyright (C) 2013 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013
Technical Corrigendum 1 applied.) 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.unix.org/online.html .
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