Support exit status for exit/wait

One test case for returning a exit status
Passes usertests, but haven't used it to simplify tests

1 files changed, 2 insertions, 2 deletions

diff --git a/user/rm.c b/user/rm.c
index 4abe295..966415a 100644
--- a/user/rm.c
+++ b/user/rm.c
@@ -9,7 +9,7 @@ main(int argc, char *argv[])
 
   if(argc < 2){
     fprintf(2, "Usage: rm files...\n");
-    exit();
+    exit(-1);
   }
 
   for(i = 1; i < argc; i++){
@@ -19,5 +19,5 @@ main(int argc, char *argv[])
     }
   }
 
-  exit();
+  exit(0);
 }