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Emacs packages, features, files, layers, extensions, auto-loading, require, provide, use-package… All these terms getting you confused? Let’s clear up a few things.

Files

Emacs files contains code that can be evaluated. When evaluated, the functions, macros and modes defined in that file become available to the current Emacs session. Henceforth, this will be termed as loading a file.

One major problem is to ensure that all the correct files are loaded, and in the

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/************************************/
基本命令
C-x C-f      打开/新建文件
C-x C-s     保存当前缓冲区
C-x C-w    当前缓冲区另存为
C-x C-v     关闭当前Buffer并打开新文件
C-x i          光标处插入文件
C-x b         切换Buffer
C-x C-b     显示Buffer列表
C-x k         关闭当前Buffer

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Installation

pip3 install --user pyqt5  
sudo apt-get install python3-pyqt5  
sudo apt-get install pyqt5-dev-tools
sudo apt-get install qttools5-dev-tools

---

Configuring to run from terminal

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# Added by me
sudo apt-get install freeglut3 freeglut3-dev libtbb-dev libqt4-dev
# install deps
sudo apt-get install build-essential cmake git pkg-config
sudo apt-get install libjpeg8-dev libtiff4-dev libjasper-dev libpng12-dev
sudo apt-get install libgtk2.0-dev
sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libv4l-dev
sudo apt-get install libatlas-base-dev gfortran
# clone opencv source
mkdir softwares

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tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

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spacemacs-keybindings

Ref: https://gist.github.com/rnwolf/e09ae9ad6d3ac759767d129d52cab1f1

Key Binding	Description
SPC	< space >
RET	< return >
C	< ctrl >
M	< alt >, M stands for Meta

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;; I have no idea why it works. This is the product of 4 hours of trial-and-error.

(defun dotspacemacs/user-init ()
  "Initialization function for user code.
It is called immediately after `dotspacemacs/init'.  You are free to put almost
any user code here.  The exception is org related code, which should be placed
in `dotspacemacs/user-config'."
  (server-start)
  (require 'org-protocol)
)

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[global_config]
  suppress_multiple_term_dialog = True
  title_transmit_bg_color = "#c00909"
[keybindings]
[layouts]
  [[default]]
    [[[child0]]]
      fullscreen = False
      last_active_term = f6492e56-7053-4ce3-8780-d71bd7ae0843
      last_active_window = True

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[global_config]
  title_hide_sizetext = True
  title_transmit_bg_color = "#ededed"
  enabled_plugins = LaunchpadCodeURLHandler, APTURLHandler, LaunchpadBugURLHandler
  title_transmit_fg_color = "#080808"
  title_inactive_bg_color = "#ededed"
[keybindings]
[profiles]
  [[default]]
    use_system_font = False