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gethostname(2)
NAME
  gethostname - Gets the name of the local host

SYNOPSIS
  #include <unistd.h>

  int gethostname (
	  char *name,
	  size_t namelen );

  The following definition of the gethostname() function does not conform to
  current standards and is supported only for backward compatibility:

  #include <unistd.h>

  int gethostname (
	  char *name,
	  int name_len );

STANDARDS
  Interfaces documented on this reference page conform to industry standards
  as follows:

  gethostname():  XPG4-UNIX

  Refer to the standards(5) reference page for more information about
  industry standards and associated tags.

PARAMETERS
  name	    Specifies the address of an array of bytes where the hostname is
	    stored.

  namelen   Specifies the length of the array pointed to by the name
	    parameter.

DESCRIPTION
  The gethostname() function retrieves the standard host name of the local
  host.	 If sufficient space is provided, the returned name is null-
  terminated.

  System hostnames are limited to MAXHOSTNAMELEN as defined in the
  /usr/include/sys/param.h file.

  The gethostname() function allows a calling process to determine the
  internal hostname for a machine on a network.




RETURN VALUES
  Upon successful completion, a value of 0 (zero) is returned.	Otherwise, a
  value of -1 is returned.


  If the version of gethostname() provided for backward compatibility returns
  a -1, errno is also set to indicate the error.

ERRORS
  If the gethostname() function provided for backward compatibility fails,
  errno may be set to the following value:

  [EFAULT]  The address parameter or address_len parameter gives an invalid
	    address.

RELATED INFORMATION
  Functions: gethostid(2), sethostid(2), sethostname(2)

  Standards: standards(5)