/* http://www.cyut.edu.tw/~ckhung/b/mi/ */
/* 1999-06 */
/* usage: sysinfo [row [col]] */
/* Note: the screen must support ANSI escape sequences */
/* (Best left running in the background.) */

#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <ctype.h>

int main(int argc, char *argv[])
{
    const char ESC = '\x1b';
    int r, c, np, i;
    time_t x;
    struct tm * now;
    DIR * proc;
    struct dirent * de;

    r = argc > 1 ? atoi(argv[1]) : 1;
    c = argc > 2 ? atoi(argv[2]) : 72;
    while (1) {
	time(& x);
	now = localtime(& x);
	proc = opendir("/proc");
	np = 0;
	while ((de = readdir(proc)) != NULL) {
	    for (i=0; de->d_name[i]; ++i)
		if (! isdigit(de->d_name[i])) break;
	    if (de->d_name[i] == '\0') ++np;
	}
	closedir(proc);
	printf("%c7%c[7m", ESC, ESC);
	printf("%c[%d;%dH%02d:%02d:%02d%c[K", ESC, r, c,
	    now->tm_hour, now->tm_min, now->tm_sec, ESC);
	printf("%c[%d;%dH%4d%c[K", ESC, r+1, c, np, ESC);
	printf("%c[m%c8", ESC, ESC);
	fflush(stdout);
	sleep(1);
    }
    return 0;
}