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.
The <sys/utsname.h> header shall define the structure utsname 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 macro:
int uname(struct utsname *);
The following sections are informative.
The System Interfaces volume of POSIX.1-2017, uname()
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1-2017, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, 2018 Edition, Copyright (C) 2018 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 .
Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .