first

shell.c

@@ -0,0 +1,24 @@
+#include <sys/wait.h>
+#include <unistd.h>
+
+int main() {
+  char command[255];
+
+  while (1) {
+    write(1, "benag@shell > ", 14);
+    int count = read(0, command, 255);
+    // /bin/ls\n -> /bin/ls\0
+    command[count - 1] = 0;
+
+    char *args[] = {command, NULL};
+    pid_t fork_result = fork();
+
+    if (fork_result == 0) {
+      execve(command, args, 0);
+      break;
+    } else {
+      siginfo_t info;
+      waitid(P_ALL, 0, &info, WEXITED);
+    }
+  }
+}