Ubuntu的小技巧

国内的Ubuntu的更新源

命令更新：

sudo vi /etc/apt/sources.list ##国内源优先选择aliyun
sudo apt-get update
sudo apt-get upgrade

1. Aliyun

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

---

2. 网易163

deb http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ bionic-backports main restricted universe multiverse

---

3. 清华大学

deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

---

4.中国科技大学

deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
deb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse

openssh-server 安装和启动

sudo apt-get update
sudo apt-get install openssh-server

ps -e | grep ssh

eval ssh-agent

sudo /etc/init.d/ssh restart

关闭图形界面

1. version < 18.04.4

   sudo vi /etc/default/grub
   

   得到以下的文件

   # If you change this file, run 'update-grub' afterwards to update
   # /boot/grub/grub.cfg.
   # For full documentation of the options in this file, see:
   #   info -f grub -n 'Simple configuration'
   
   GRUB_DEFAULT=0
   GRUB_TIMEOUT_STYLE=hidden
   GRUB_TIMEOUT=0
   GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
   GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
   ##GRUB_CMDLINE_LINUX_DEFAULT="text"
   GRUB_CMDLINE_LINUX=""
   
   # Uncomment to enable BadRAM filtering, modify to suit your needs
   # This works with Linux (no patch required) and with any kernel that obtains
   # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
   #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"
   
   # Uncomment to disable graphical terminal (grub-pc only)
   #GRUB_TERMINAL=console
   
   # The resolution used on graphical terminal
   # note that you can use only modes which your graphic card supports via VBE
   # you can see them in real GRUB with the command `vbeinfo'
   #GRUB_GFXMODE=640x480
   
   # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
   #GRUB_DISABLE_LINUX_UUID=true
   
   # Uncomment to disable generation of recovery mode menu entries
   #GRUB_DISABLE_RECOVERY="true"
   
   # Uncomment to get a beep at grub start
   #GRUB_INIT_TUNE="480 440 1"
   

   将GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"注释掉，打开GRUB_CMDLINE_LINUX_DEFAULT="text"

   sudo update-grub
   reboot
   

   打开的话，就是相反的操作

2. 18.04.4

   关闭图形界面

   sudo systemctl set-default multi-user.target
   sudo reboot
   

   打开图形界面

   sudo systemctl set-default graphical.target
   sudo reboot