######
X11   
######

***********
Install    
***********

.. code-block:: bash

    sudo apt-get install -y xorg openbox
    export DISPLAY=:0.0
    sudo xhost +local:root
     
    xinit

* `xrandr <https://wiki.archlinux.org/index.php/Xrandr_(%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87)>`_
* `窗口管理器 Openbox 入门指南 (1) <https://linuxtoy.org/archives/openbox-getting-started-guide.html#running>`_
* `Resolution <https://wiki.ubuntu.com/X/Config/Resolution>`_
* `startx 及xinit 介绍 <https://blog.csdn.net/qq_39101111/article/details/78728857>`_

.. raw:: html

    <script src="https://gist.github.com/mapix/4652350.js"></script>

* `startx <http://man.linuxde.net/startx>`_

.. code-block:: sh

    #!/bin/sh

    #  $Home/.xinitrc
    # /etc/X11/xinit/xinitrc
    #
    # global xinitrc file, used by all X sessions started by xinit (startx)

    # invoke global X session script
    # . /etc/X11/Xsession
    exec openbox-session


.. code-block:: sh

    tee  .config/openbox/autostart.sh  <<-'EOF'
    if [ `xrandr | grep eDP-1 | grep -c ' connected '` -eq 1 ]; then
	    if [ `xrandr | grep ^DP-1 | grep -c ' connected'` -eq 1 ]; then
		    # xrandr --output DP-1 --auto --primary --output eDP-1 --auto --right-of DP-1
		    xrandr --output DP-1 --auto --primary 
		    echo "==="
	    fi
	    if [ `xrandr | grep ^HDMI-1 | grep -c ' connected '` -eq 1 ]; then
		    # xrandr --output HDMI-1 --auto --primary --output eDP-1 --auto --right-of HDMI-1
		    xrandr --output HDMI-1 --auto --primary 
	    fi
    fi
    feh --bg-fill   ~/Wallpapers/background.jpeg
    # feh --bg-tile   ~/Wallpapers/tile8.jpg
    # feh --bg-center ~/Wallpapers/paperart5.jpg
    EOF


**************
自 动 登 陆   
**************

* `Ubuntu Server 16.04 免密碼自動登入  <https://justhodl.blogspot.com/2018/03/ubuntu-server-1604-auto-login-non-gui.html>`_

.. code-block:: sh

    sudo mkdir /etc/systemd/system/getty@tty1.service.d
    tee /etc/systemd/system/getty@tty1.service.d/override.conf  <<- 'EOF'
    [Service]
    ExecStart=
    ExecStart=-/sbin/agetty --noissue --autologin 帳戶名稱 %I $TERM
    Type=idle
    EOF

.. code-block:: sh

    # 登陆自启动
    tee  /root/.bash_profile <<-'EOF'
    if [ -z "$DISPLAY" ] && [ $(tty) == /dev/tty1 ]; then
        xinit  # or start x11
        exec startx
        exit 1
    fi
    EOF

.. code-block:: sh

    tee /root/.xinitrc <<-'EOF'
    #!/bin/sh

    #  $Home/.xinitrc
    # /etc/X11/xinit/xinitrc

    exec openbox-session
    EOF

    tee  .config/openbox/autostart.sh  <<-'EOF'
    # start  client
    EOF

------------------

* `Scrot-如何从Linux命令行截屏 <https://www.linuxidc.com/Linux/2014-06/103198.htm>`_

------------

.. code-block:: sh

    ssh -AY user@host 
    ssh -AY user@host xterm

------------

* `Remote X11 GUI for LINUX/UNIX <https://www.redwireservices.com/remote-x11-for-linux-unix>`_
* `通过X11实现 Linux服务器图形化界面显示 <https://www.cnblogs.com/lixiaochun/p/8547815.html>`_

.. code-block:: sh

    sudo yum install xorg-x11-xauth xterm
    sed -i 's/#X11Forwarding yes/X11Forwarding yes/g' /etc/ssh/sshd_config
    systemctl restart sshd

    ssh -Y user@host

    # test
    yum install gnome-clocks.x86_64
    gnome-clocks