sh: Display the working directory as part of the prompt

apps/sh.cpp

@@ -74,7 +74,17 @@ int main(int argc, char** argv)
 
     while (1)
     {
-        if (file == "-") fputs(getuid() == 0 ? "sh# " : "sh$ ", stdout);
+        if (file == "-")
+        {
+            char* cwd = getcwd(NULL, 0);
+            if (!cwd)
+            {
+                perror("getcwd");
+                return 1;
+            }
+            printf("sh %s%c ", cwd, getuid() == 0 ? '#' : '$');
+            free(cwd);
+        }
 
         char cmd[4096];
         char* rc = fgets(cmd, sizeof(cmd), f);