diff --git a/raspberry/router.md b/raspberry/router.md
new file mode 100644
index 0000000..9da1594
--- /dev/null
+++ b/raspberry/router.md
@@ -0,0 +1,53 @@
+# 用树莓派做路由器
+
+## 网络配置
+
+wlan0 连接公网，并将网络共享给有线网和wlan1
+
+``` bash
+auto eth0
+iface eth0 inet static
+address 192.168.1.1
+netmask 255.255.255.0
+
+
+auto wlan0
+iface wlan0 inet dhcp
+wpa_conf /etc/wpa_supplicant/wpa_supplicant.conf
+
+
+auto wlan1
+iface wlan1 inet static
+address 192.168.2.1
+netmask 255.255.255.0
+```
+
+## 固定wlan名称
+
+sudo nano /etc/udev/rules.d/10-network.rules
+
+``` bash
+SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="MAC_address",name="wlan0"
+SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="MAC_address",name="wlan1"
+```
+
+## 安装配饰DHCP服务
+
+sudo apt install dnsmasq
+
+nano /etc/dnsmasq.conf
+
+``` bash
+listen-address = 127.0.0.1, 192.168.1.1, 192.168.2.1
+dhcp-range = 192.168.1.20, 192.168.1.200, 12h
+dhcp-range = 192.168.1.20, 192.168.1.200, 12h
+
+```
+
+## 开启内核转发包服务
+
+sudo nano /etc/sysctl.conf
+
+``` bash
+net ipv4.ip_forward = 1     #去掉注释
+```
\ No newline at end of file
diff --git a/raspberry/wifi.md b/raspberry/wifi.md
index 492152a..42a8b0c 100644
--- a/raspberry/wifi.md
+++ b/raspberry/wifi.md
@@ -1,12 +1,32 @@
 # 树莓派连接wifi
 
-# 命令行
+## 配置
+
+/etc/network/interfaces
+
+``` bash
+auto lo
+
+iface lo inet loopback
+iface eth0 inet dhcp
+
+auto wlan0
+#allow-hotplug wlan0
+#iface wlan0 inet manual
+iface wlan0 inet dhcp
+wpa-conf /etc/wpa.conf
+#wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
+
+iface default inet dhcp
+```
 
 > sudo nano /etc/wpa_supplicant/wpa_supplicant.conf
 
 ``` bash
 network={
-    ssid="The_ESSID_from_earlier"
-    psk="Your_wifi_password"
+    ssid=""
+    key_mgmt=WPA-PSK
+    psk=""
 }
-```
\ No newline at end of file
+```
+
diff --git a/ubuntu/网络相关命令.md b/ubuntu/网络相关命令.md
new file mode 100644
index 0000000..1ae5a62
--- /dev/null
+++ b/ubuntu/网络相关命令.md
@@ -0,0 +1 @@
+iw list | grep -A 10 "Supported interface modes"