diff --git a/.gitignore b/.gitignore
index 6282f46..661c60c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,3 @@
 build
 .directory
 .vscode
-cgproxy2.sh
diff --git a/cgnoproxy.sh b/cgnoproxy.sh
index fa0d194..e66a182 100644
--- a/cgnoproxy.sh
+++ b/cgnoproxy.sh
@@ -11,6 +11,6 @@ else
 fi
 
 # test attach success or not
-[[ -z "$attached" ]] && echo "config error" && exit 1
+[[ -z "$attached" ]] && echo "attach error" && exit 1
 
 exec "$@"
\ No newline at end of file
diff --git a/cgproxy.sh b/cgproxy.sh
index 003c92c..beeeb52 100644
--- a/cgproxy.sh
+++ b/cgproxy.sh
@@ -11,6 +11,6 @@ else
 fi
 
 # test attach success or not
-[[ -z "$attached" ]] && echo "config error" && exit 1
+[[ -z "$attached" ]] && echo "attach error" && exit 1
 
 exec "$@"
\ No newline at end of file
diff --git a/readme.md b/readme.md
index 222768c..9564f53 100644
--- a/readme.md
+++ b/readme.md
@@ -149,10 +149,10 @@ sudo systemctl restart cgproxy.service
 
 - `cgattach` attach pid to specific cgroup, and has *suid* bit set by default, be careful to use on multi-user server for securiry. To avoid this situation,  you can remove the *suid* bit , then it will fallback to use *sudo*, with *visudo* you can restrict permission or set NOPASSWD for youself.
 
-- v2ray TPROXY need root or special permiassion
+- v2ray TPROXY need root or special permission
   
   ```bash
-  sudo setcap "cap_net_bind_service=+ep cap_net_admin=+ep" /usr/lib/v2ray/v2ray
+  sudo setcap "cap_net_admin,cap_net_bind_service=ep" /usr/lib/v2ray/v2ray
   ```
 
 ## TIPS