almost got the term emu working and shell

programs/vga_text_term/main.c

@@ -1,5 +1,44 @@
-#include <stdio.h>
+#include <unistd.h>
+
+void term();
+
+int ptys;
+int ptym;
 
 int main(int argc, char *argv[]) {
+    (void)argc;
+    (void)argv;
+
+    ptym = pty(&ptys);
+
+    if (fork() == 0) {
+        close(ptym);
+        dup2(ptys, 0);
+        dup2(0, 1);
+        dup2(0, 2);
+
+        exec("/rocksh.elf");
+    }
+
+    close(ptys);
+    dup2(ptym, 0);
+    dup2(0, 1);
+    dup2(0, 2);
+
+    term();
+
     return 0;
+}
+
+void term() {
+    int vga_fd = open("/dev/tvga");
+    if (vga_fd == -1) return;
+
+    while (1) {
+        char c;
+        int rd = read(0, &c, 1);
+        if (rd > 0) {
+            write(vga_fd, &c, 1);
+        }
+    }
 }