diff --git a/mongodb/auth.md b/mongodb/auth.md
index 6b16b47..d78a595 100644
--- a/mongodb/auth.md
+++ b/mongodb/auth.md
@@ -6,11 +6,19 @@ $ mongo
 > use admin
 > db.createUser({
     user: "root",
-    pwd: "root",
+    pwd: "123456",
     roles: [ { role: "userAdminAnyDatabase", db: "admin" }]
   }
 )
-
+db.auth('root', '123456')
+db.createUser({
+    user: "light",
+    pwd: "123456",
+    roles: [ { role: "root", db: "admin" }]
+  }
+)
+# mongodb://light:123456@127.0.0.1:27017/
+# mongodb://tester:xyz123@127.0.0.1:27017/test
 use test
 db.createUser(
   {
diff --git a/nodejs/install.md b/nodejs/install.md
index 85d0bd6..8ed93b9 100644
--- a/nodejs/install.md
+++ b/nodejs/install.md
@@ -7,9 +7,9 @@
 ``` bash
 sudo apt install nodejs
 sudo apt install npm
-npm install npm@latest -g
 sudo npm install n@latest -g
 sudo n stable
+npm install npm@latest -g
 node -v
 npm -v
 ```
diff --git a/redis/配置.md b/redis/配置.md
index 250c7a4..06801fd 100644
--- a/redis/配置.md
+++ b/redis/配置.md
@@ -1,5 +1,7 @@
 # redis 安装配置
 
+> https://redis.io/download
+
 ## 安装
 
 ``` bash
diff --git a/ubuntu/screen.md b/ubuntu/screen.md
index 3d6c9be..a9a62d1 100644
--- a/ubuntu/screen.md
+++ b/ubuntu/screen.md
@@ -11,5 +11,5 @@ screen -dmS sslocal  sslocal -c /etc/shadowsocks.json -d start
 screen -dmS test ngrokStart -d
 sudo ./bin/ngrokd -tlsKey=server.key -tlsCrt=server.crt -domain="ngrok.hellolight.me" -httpAddr=":8081" -httpsAddr=":8082"
 
-
+sudo screen -S 12597 -X quit
 ```
\ No newline at end of file
diff --git a/ubuntu/uget.md b/ubuntu/uget.md
new file mode 100644
index 0000000..fbef57f
--- /dev/null
+++ b/ubuntu/uget.md
@@ -0,0 +1,18 @@
+# ubuntu 16.04 安装使用 uget
+
+> http://www.cnblogs.com/EasonJim/p/7119294.html
+
+
+## 安装uget
+
+``` bash
+sudo add-apt-repository ppa:plushuang-tw/uget-stable
+sudo apt update
+sudo apt install uget
+```
+
+``` bash
+sudo add-apt-repository ppa:t-tujikawa/ppa
+sudo apt update
+sudo apt install aria2
+```
\ No newline at end of file