uname

uname

Display Current Operating System Name

Portability: POSIX.1 conforming, UNIX compatible

SYNOPSIS
DESCRIPTION
RETURN VALUE
EXAMPLE
RELATED FUNCTIONS

SYNOPSIS

#include <sys/utsname.h>

int uname(struct utsname *sysInfo);

DESCRIPTION

uname stores information about the operating system you are running under in a structure at the location pointed to by sysInfo . The utsname structure is declared in <sys/utsname.h> and has the following elements:

char *sysname;: points to the name of the operating system implementation.
char *nodename;: points to the node name within a communications network for the specific implementation.
char *release;: points to the current release level for the implementation.
char *version;: points to the current version number for the release.
char *machine;: points to the name of the machine on which the operating system is running.

RETURN VALUE

uname returns a nonnegative value if successful and a -1 if unsuccessful.

EXAMPLE

The following example illustrates the use of uname to determine information about the operating system:

#include <systypes.h>
#include <sys/utsname.h>
#include <stdio.h>

main()
{
   struct utsname sysInfo;

   if (uname(&sysinfo) != -1) {
      puts(sysInfo.sysname);
      puts(sysInfo.nodename);
      puts(sysInfo.release);
      puts(sysInfo.version);
      puts(sysInfo.machine);
   }
   else
      perror("uname() error");
}

RELATED FUNCTIONS

sysname , syslevel

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