#include <stdio.h>
#include <signal.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>

const char *file_name="nohum.out";

int main(int argc, char *argv[])
{
	int new_stdout;

	if(argc < 2)
	{
		fprintf(stderr, "Usage: %s command [arguments]\n", *argv);
		exit(1);
	}
	
	if(isatty(1))
	{
		fprintf(stderr, "Sending output to %s\n", file_name);
		close(1);
		if ((new_stdout = open(file_name, O_WRONLY | O_CREAT |O_APPEND, 0644)) == -1)
		{
			perror(file_name);
			exit(2);
		}
	}

	if (signal(SIGHUP, SIG_IGN) == SIG_ERR)
	{
		perror("SIGHUP");
		exit(3);
	}

	++argv;
	execvp(*argv, argv);
	perror(*argv);

	exit(4);
}