1 files changed, 4 insertions, 4 deletions
diff --git a/user/sh.c b/user/sh.c
index 74a493d..a593bc0 100644
--- a/user/sh.c
+++ b/user/sh.c
@@ -65,7 +65,7 @@ runcmd(struct cmd *cmd)
   struct redircmd *rcmd;
 
   if(cmd == 0)
-    exit(-1);
+    exit(1);
 
   switch(cmd->type){
   default:
@@ -74,7 +74,7 @@ runcmd(struct cmd *cmd)
   case EXEC:
     ecmd = (struct execcmd*)cmd;
     if(ecmd->argv[0] == 0)
-      exit(-1);
+      exit(1);
     exec(ecmd->argv[0], ecmd->argv);
     fprintf(2, "exec %s failed\n", ecmd->argv[0]);
     break;
@@ -84,7 +84,7 @@ runcmd(struct cmd *cmd)
     close(rcmd->fd);
     if(open(rcmd->file, rcmd->mode) < 0){
       fprintf(2, "open %s failed\n", rcmd->file);
-      exit(-1);
+      exit(1);
     }
     runcmd(rcmd->cmd);
     break;
@@ -175,7 +175,7 @@ void
 panic(char *s)
 {
   fprintf(2, "%s\n", s);
-  exit(-1);
+  exit(1);
 }
 
 int