sys/utsname.h - system name structure
The <sys/utsname.h> header defines structure utsname, which includes at least the following members:
char sysname name of this implementation of the operating system char nodename name of this node within an implementation-dependent communications network 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 is terminated by a null byte.
The following is declared as a function and may also be defined as a macro.
int uname(struct utsname *);