January 4, 1994 UNAME 3

### NAME

uname - get system identification

### LIBRARY

Standard C Library (libc, -lc)

### SYNOPSIS

```int` uname(```struct utsname *name`)

### DESCRIPTION

The uname(``) function stores nul-terminated strings of information identifying the current system into the structure referenced by ```name`.

The ```utsname` structure is defined in the ```<sys/utsname.h>` header file, and contains the following members:

sysname
  Name of the operating system implementation.

nodename
  Network name of this machine.

release
  Release level of the operating system.

version
  Version level of the operating system.

machine
  Machine hardware platform.

### RETURN VALUES

If uname is successful, 0 is returned, otherwise, -1 is returned and errno is set appropriately.

### ERRORS

The uname(``) function may fail and set errno for any of the errors specified for the library functions sysctl(3).

### SEE ALSO

uname(1), sysctl(3)

### STANDARDS

The uname(``) function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'') .

### HISTORY

The uname function first appeared in 4.4BSD.