[untitled] basic operation of raspberry pie (2)

1. Turn on the camera

（1） Method 1 ： Click on the raspberry pie icon —— Preferences ——Raspberry Pi Configuration——interfaces——Camera——Enable——OK

（2） Method 2 ： Open the terminal —— Input sudo raspi-config, enter —— choice Interfacing Options——Camera—— yes ——Finish

 2. Software installation

（1） Change the source

The source address of raspberry pie software is abroad , If you use the domestic network for access, the slow download speed may lead to download failure , It is suggested to replace it with domestic software source . The specific operation is as follows ：

       edit ‘/etc/apt/sources.list’ file （ Input... At the terminal sudo nano /etc/apt/sources.list）, Delete （Ctrl+K） All contents of the original document , Copy

deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main non-free contrib rpi

deb-src http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ buster main non-free contrib rpi

To terminal , enter , write file （ctrl+O）, return （ctrl+X）;

  edit ‘/etc/apt/sources.list.d/raspi.list’ file （ Input... At the terminal sudo nano /etc/apt/sources.list.d/raspi.list）, Delete all contents of the original file , Replace... With the following ：

deb http://mirrors.tuna.tsinghua.edu.cn/raspberrypi/ buster main ui   enter ;

          Refresh the software source ：sudo apt-get update

          Update the installation package ：sudo apt-get upgrade

（2） install 、 uninstall

        install ： After preparing the software source and connecting to the network , The user only needs to input “sudo apt-get install The software name ”, You can complete the installation . When the user needs to repair the damaged software package or wants to reinstall the latest version of some files , have access to “sudo apt-get  --reinstall install The software name ” Command to reinstall .

        uninstall ： Incomplete uninstall ：“sudo apt-get remove”, When deleting a package , It will delete other software packages that depend on this package . Uninstall completely ：“sudo apt-get --purge remove”, While deleting the package file , Also delete the configuration file used by the package .

Now let's install a Chinese input method ： Open the terminal —— Enter at the command line sudo apt-get install scim-pinyin—— Restart raspberry pie after installation （ Command line input ：sudo reboot）