1 files changed, 6 insertions, 8 deletions
diff --git a/userspace/cat.c b/userspace/cat.c
index a371397..8980546 100644
--- a/userspace/cat.c
+++ b/userspace/cat.c
@@ -2,16 +2,14 @@
 
 int main()
 {   
-    FILE *f = fopen("README", "r");  
 
-    if (f == NULL)
-    {
-	perror("unable to open file");
-	return 1;
-    }
 
-    puts("open success");
-    fclose(f);
+    char buf[256];
+
+    while(has_data_waiting(2)){
+	fread(buf,1,5,stderr); // read stderr;
+	printf("[%s]\n",buf);
+    }
 
     return 0;
 }