Started working on launching child process

build.sh

@@ -3,4 +3,4 @@
 set -e
 
 mkdir -p build/
-gcc -std=gnu23 -I include/ src/*.c -o build/main
+gcc -std=gnu23 -I include/ src/*.c -o build/gandalf

src/main.c

@@ -1,3 +1,33 @@
-int main() {
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+// #include <sys/
+
+// _start: 
+//   mov sp 0x120
+//   call main
+
+int run_child(char *exe) {
+  printf("Starting %s\n", exe);
+}
+
+
+int main(int argc, char **argv) {
+  if (argc != 2) {
+    printf("Usage: gandalf <executable>\n");
+    return 1;
+  }
+  
+  pid_t child = fork();
+
+  if (child == -1) {
+    printf("Failed to fork\n");
+    return 1;
+  } else if (child == 0) {
+    printf("Child process\n");
+    run_child(argv[1]);
+  } else {
+    printf("Parent process\n");
 
   }
+}

tests/main.c

@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main() {
+  printf("Hello, world\n");
+  return 0;
+}