/* * setconsole.c -- choose a console to receive kernel messages * * Only works with 1.3.43 and newer. Otherwise returns "invalid argument". * Tested with 2.0 on the x86, Sparc and Alpha */#include <stdio.h>#include <stdlib.h>#include <string.h>#include <errno.h>#include <unistd.h>#include <sys/ioctl.h>int main(int argc, char **argv){    char bytes[2] = {11,0}; /* 11 is the TIOCLINUX cmd number */    if (argc==2) bytes[1] = atoi(argv[1]); /* the chosen console */    else {        fprintf(stderr, "%s: need a single arg\n",argv[0]); exit(1);    }    if (ioctl(STDIN_FILENO, TIOCLINUX, bytes)<0) {    /* use stdin */        fprintf(stderr,"%s: ioctl(stdin, TIOCLINUX): %s\n",                argv[0], strerror(errno));        exit(1);    }    exit(0);}