ubuntu中創建開機自啓動wifi熱點

第一步安裝依賴庫

sudo apt-get install util-linux procps hostapd iproute2 iw haveged dnsmasq

第二步下載源碼

git clone https://github.com/oblique/create_ap

第三步進入文件並編譯源碼

cd create_ap
sudo make install

第四步測試AP模式

sudo create_ap wlan0(無線網卡名) eth0(有線網卡名) wifi熱點名稱 wifi熱點密碼

查看網卡名稱：

iwconfig

$ iwconfig
enp9s0    no wireless extensions.

wlp12s0   IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=14 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          
enp11s0   no wireless extensions.

lo        no wireless extensions.

ap0       IEEE 802.11  Mode:Master  Tx-Power=14 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off

我們可以看到enp所以enp9s0,enp11s0爲有線網卡名稱；wlp12s0爲無線網卡名稱。
測試代碼

sudo create_ap wlp12s0 enp11s0  tsinghua 12345678

見出現下面AP-ENABLED 表示創建成功，可以打開手機wifi搜索一定看得見一個wifi名稱爲tsinghua

Config dir: /tmp/create_ap.wlp12s0.conf.IpfYaNhV
PID: 9468
Network Manager found, set ap1 as unmanaged device... DONE
Creating a virtual WiFi interface... ap1 created.
Sharing Internet using method: nat
hostapd command-line interface: hostapd_cli -p /tmp/create_ap.wlp12s0.conf.IpfYaNhV/hostapd_ctrl
Configuration file: /tmp/create_ap.wlp12s0.conf.IpfYaNhV/hostapd.conf
Using interface ap1 with hwaddr e0:b9:a5:04:cf:87 and ssid "tsinghua"
ap1: interface state UNINITIALIZED->ENABLED
ap1: AP-ENABLED 

因爲關機後熱點又會不見，所以設置一個開機自啓腳本。

第五步創建開機自啓腳本

在/etc中創建rc.local文件
編輯

sudo gedit /etc/rc.local

輸入以下代碼

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.


sudo create_ap wlp12s0 enp11s0 tsinghua 12345678 &
sudo /etc/init.d/ssh restart

exit 0

預防開機無法自啓動，給定權限

sudo chmod +x /etc/rc.local