#include	<stdio.h>
#include	<sys/types.h>
#include	<sys/socket.h>
#include	<sys/un.h>

main()
{
	int	sock;
	struct sockaddr_un addr;
	socklen_t addrlen;
	char	sockname[] = "/tmp/xyz";

	sock = socket(PF_UNIX, SOCK_DGRAM, 0);
	if ( sock == -1 ){ perror("socket"); exit(1); }

	strcpy(addr.sun_path, sockname );
	addr.sun_family = AF_UNIX;
	addrlen = strlen(sockname) + sizeof(addr.sun_family) ;

	if ( sendto(sock,"hello\n", 6, 0, &addr, addrlen) == -1 )
		{ perror("sendto"); exit(2); }
}