#+TAGS: { client server }  nodejs common-lisp lisp git shell DONE
* Org Mode
** Starts
'org-mode
'org-indent-mode
Indent the contents on different level (You seei in the firest line make it by default)
** Collapwse
# S- Means Shift
S-<tab>	org-shifttab	循环切换整个文档的大纲状态（三种状态：折叠，打开下一级，打开全部）
<tab>	org-cycle	循环切换光标所在大纲的状态
** Move Cursor
C-c C-n/p	 	下/上一标题
C-c C-f/b	 	下/上一标题（仅限同级标题）
C-c C-u	 	跳到上一级标题
C-c C-j	 	切换到大纲浏览状态
** Edit/Move Contents
M-RET	 		插入一个同级标题
M-S-RET	 		插入一个同级TODO 标题
M-left/right	 	将当前标题升/降级 *你的光标要载标题处*
M-S-left/right	 	将子树升/降级 *同上*
M-S-up/down	 		将子树上/下移 *同上*
C-c *	 		将本行设为标题/正文 *所以会自动加一级*
C-c C-w	 		将子树或区域移动到另一标题处（切换Boss） *Move this tree*
C-x n s/w	 		只显示当前子树/返回 *s:隐藏其他子树 w:返回*
*C-c C-x b*	 		在新缓冲区显示当前分支 *不用改变当前分区*
C-c /	 		只列出包含搜索结果的大纲，并高亮，支持多种搜索方式 *Regular Expression!*
C-c C-c	 		取消高亮 *在上面的搜索结果*
** Links
C-c C-l	org-insert-link		创建或修改链接，可以引用已保存的链接
C-c C-o	org-open-at-point	打开光标所在的链接
Examples:
http://celwk.com/gravity			Website (will be opened by default Browser - Chrome)
file:~/Develop/Lisp/       			Folder (will be opened by Mac)
[[file:/Develop/Lisp/2019/][Lisp Directory]]
file:~/Develop/C/environ.c        	Same as above
file:~/Develop/Lisp/init.cl::40 	File, absolute path (will be opended in this Emacs), the 40th row
file:org-mode.org                   File, relative path
(setq default-directory "/Develop/C")	Run it by
file:environ.c
Link format: [[link] [description]]  	Remove the middle space.
file:/Users/Can/Develop/Lisp/history/images/mandelbrot.png

*** Internal Link (anchor)
Define:  <<my-anchor>>
[[my-anchor][Goto My Anchor]]

file:~/other-file.org::my-anchor		Link to another Org file's link

** Table
Start with "|" in a line, and end with "C-c RET", jump to another cloum with <tab> key.
C-c |	org-table-create-or-convert-from-region
C-c 竖线	 	创建或转换成表格
C-c C-c	 	调整表格，不移动光标
<tab>	 		移动到下一区域，必要时新建一行
S-<tab>	 	移动到上一区域
RET	 		移动到下一行，必要时新建一行

M-left/right	移动列
M-UP/down	 	移动行
M-S-left/right	删除/插入列
M-S-UP/down	 	删除/插入行
C-c -	 	添加水平分割线
C-c RET	 	添加水平分割线并跳到下一行
C-c ^	 	根据当前列排序，可以选择排序方式

|-------------+-------------+-----|
| Name        |       Phone | Age |
|-------------+-------------+-----|
| Savior      | 13012345678 |  12 |
| Can EriK Lu | 15089323844 |  30 |
| Love        | 18043392350 |  50 |
|-------------+-------------+-----|

** List
无序列表项以‘-’、‘+’或者‘*‘开头。
有序列表项以‘1.’或者‘1)’开头。
描述列表用‘::’将项和描述分开。
有序列表和无序列表都以缩进表示层级。只要对齐缩进，不管是换行还是分块都认为是处于当前列表项。

My favorite scenes are (in this order)
1. The attack of the Rohirrim
2. Eowyn's fight with the witch king
   + this was already my favorite scene in the book
   + I really like Miranda Otto.
Important actors in this film are:
- Elijah Wood :: He plays Frodo
- Sean Austin :: He plays Sam, Frodo's friend.

TAB	 		折叠列表项
M-ret	 	插入项
M-S-ret	 	插入带复选框的项
M-S-up/down	 	移动列表项
M-left/right	升/降级列表项，不包括子项
M-S-left/rigth	升/降级列表项，包括子项
c-c C-c	 	改变复选框状态
C-c -	 	更换列表标记（循环切换）
(setq org-src-tab-acts-natively t)	显示代码格式 (common-lisp)
** [[http://www.cnblogs.com/holbrook/archive/2012/04/12/2444992.html#sec-4][Tag]]
C-c % => (org-mark-ring-push) 记录当前标签位置
C-c & => (org-mark-ring-goto) 返回到上一个标签位置
** Tutorial
[[https://www.cnblogs.com/Open_Source/archive/2011/07/17/2108747.html][Org-mode 简明手册]]
[[http://www.cnblogs.com/holbrook/archive/2012/04/12/2444992.html][Org-mode: 最好的文档编辑利器，没有之一]]
* Emacs
** [[~/.emacs][Emacs Configuration File]]
[[file://~/emacs.d/keys.el][Key Bindings]]
(menu-bar-mode 0/1)   隐藏/显示菜单栏，<f10>打开菜单
** [[file:~/.emacs.d/keys.el::22][Bookmarks]]
*'list-bookmarks* || C-x r l	List Bookmarks
*'bookmark-jump* || C-x r b	Open a bookmark, wildcard available, e.g  *data
'bookmark-set  || C-x r m	Make(create) a bookmark
'bookmark-save 			Save current buffer to a bookmark
'bookmark-delete			Delete a bookmark by name

a – show annotation for the current bookmark
A – show all annotations for your bookmarks
d – mark various entries for deletion (x – to delete them)
e – edit the annotation for the current bookmark
m – mark various entries for display and other operations, (v – to visit)
o – visit the current bookmark in another window, keeping the bookmark list open
C-o – switch to the current bookmark in another window
r – *rename the current bookmark*
** [[~/emacs.d/keys.el][Shortcuts]]
** Eval ([[file:~/emacs.d/keys.el::19][Evaluate]])
'eval-buffer	Eval the current buffer(elisp)
C-x C-x, C-x C-e    'eval-last-sexp   Evaluate expression before your curosor
C-z, M-z		'eval-expression  Prompt for your expression to evaluate

** [[https://www.gnu.org/software/emacs/manual/html_node/emacs/Several-Buffers.html][Buffers]]
C-x h		Select whole buffer; (select-all)
C-x C-b		List Buffers  (type "g" to refresh)
*F4*		Close the current window
*C-x 4 C-o*       	display-buffer *Without selecting it!!*
*C-x 4 b*         	switch-to-buffer-other-window *And select it*
C-x i [insert-file] Insert a file's content to this buffer
'revert-buffer	To set the buffer to the unsaved file content.
'erase-buffer	Erase the whole buffer.
[[https://blog.csdn.net/diabloneo/article/details/7691204][Emacs iBuffers]]
** Directory	(C-h F dired)
'dired || C-x d		List the directory files	[[https://www.gnu.org/software/emacs/manual/html_node/elisp/Contents-of-Directories.html][(directory-files "~/.emacs.d")]]
o: 		Open selected file in another window
C-o: 	Open selected file in another window without selecting its buffer
d: 		Add delete tag
u:  	Remove delete tag
x: 		Execute
+:  	New sub directory
*** 查看帮助
? 简单帮助
h 模式帮助
*** 移动光标
n, p, SPC 上、下移动光标 [p]
C-n, C-p 上、下移动光标 [p]
M-{, M-} 已标记的文件之间移动 [p]
C-M-p, C-M-n 缓冲中的子目录间移动 [p]
<, > 缓冲中的目录行间移动 [p]
C-M-u 缓冲中的目录树上移动 [p]
M-g 光标移动到某个文件上
M-G 光标移动到某个缓冲中的子目录上，(用 i 插入的)
*** 标记文件
m 标记文件，下移一行 [p]
u 去掉标记，下移一行 [p]
U 去掉缓冲中所有的标记
M-Backspace 去掉缓冲中所有的某个标记，缺省为 * 标记
Backspace 并去掉上一行标记，并上移一行 [p]
t 标记/未标记互换
D 删除所有标记的文件/目录 [*]
d 设置“删除标记”（字符D），并且光标下移一行 [p]
x 删除用 d 标记的文件/目录
~ 将缓冲中备份文件做删除标记 [u]
& 没用的文件，做删除标记
# 将缓冲中自动保存的文件做删除标记 [u]
. 按备份文件版本，将备份文件做删除标记 [u]
% g 标记所有“含有”regexp 的文件 [u]
 * * 标记所有可执行文件 [u]
 * . 标记所有同扩展名文件 [ux]
 * / 标记所有目录 [u]
 * @ 标记所有符号连接 [u]
 * c 改变标记的符号
% d 通过匹配 regexp 标记删除
% m 通过匹配 regexp 标记 [u]
*** 复制、移动、创建 文件或目录以及连接
C-x C-f 创建文件
+ 创建目录
R 文件的重命名/移动 [p*]
C 复制文件 [*]
S 创建文件的 Symbol link (绝对路径) [p*]
Y 创建文件的 Symbol link (相对路径) [px*]
H 创建文件的 Hard link [p*]
% C 复制匹配 regexp 的文件 [p*]
% S 创建匹配 regexp 的 Symbol link (绝对路径) [p*]
% Y 创建匹配 regexp 的 Symbol link (相对路径) [p*]
% H 创建匹配 regexp 的 Hark link [p*]
w 复制文件名，如果通过 C-u 传递一个前缀参数 0 ，则复制决定路径名， 如果只是 C-u 则复制相对于 dired 当前目录的相对路径。
*** 修改文件名、属性
M 修改文件 rwx 权限属性 [*]
G 修改文件 Group 属性 [p*]
O 修改文件 Owner 属性 [p*]
T 修改文件的时间戳 [p*]
% l 文件名逐一改为小写 [p*]
% u 文件名逐一改为大写 [p*]
% R, % r 重命名/移动匹配 regexp 的文件 [p*]
*** 访问文件，目录
e, f, RET 打开文件或目录
a 打开文件或目录，并替换当前缓冲
v 使用 view 模式查看文件，q 退出，有些文件使用外部查看程序调用
o 另一个窗口中，打开文件或目录
C-o 另一个窗口中，打开文件或目录，但当前窗口不变
F 打开(多个)文件 [x*]
I 使用 Info 模式查看文件
N 使用 man 模式查看文件，若有前缀参数，提示输入处理命令 [ux*]
V 使用 RMAIL 模式查看文件 [x]
*** 退出
^ 访问目录的父目录，若有前缀参数在另外的窗口中打开 [u]
q 退出缓冲，若有前缀参数则关闭缓冲 [u]
*** 隐藏/刷新缓冲中内容
s 互换缓冲中“文件名/时间”排序 [u]
C-u s 修改传递给 ls 的参数，即修改每行的内容
M-o 隐藏/显示部分次要文件，使缓冲更简便，若有前缀参数标记隐藏的文件 [ux]
$ 隐藏/显示当前目录中内容 [p]
M-$ 隐藏/显示缓冲中所有目录内容
k 隐藏文件，按 g 可以再显示出来 [p*]
l 刷新缓冲文件 [p*]
g 刷新缓冲所有文件
C-/, C-_, C-x u dired 模式的 undo

i 把当前行的子目录插入缓冲中

C-u k 把光标放在子目录的header上按此组合，将会把子目录内容从当前buffer移除
*** 其他
= 比较文件
-= 文件和备份之间比较，若有前缀参数，提示输入 diff 选项 [u]
w 复制文件名到 kill-ring [p*]
Z 压缩/解压缩文件 [p*]
X 在文件上执行 shell 命令 [p*]
B 编译(Emacs Lisp)文件 [p*]
L 加载(Emacs Lisp)文件 [p*]
y 给出文件类型信息 (通过 file 命令)
P 打印文件 [p*]
*** dired-x.el 中的其他有用的函数
dired-mark-extension 按后缀标记
dired-flag-extension 按后缀标记删除
dired-clean-patch 标记删除 patch 文件
dired-clean-tex 标记删除 tex 编译文件
dired-very-clean-tex 标记删除 tex 编译文件
dired-jump 跳转到当前缓冲所在目录
dired-jump-other-window 在另一个窗口中跳转到当前缓冲所在目录
dired-omit-here-always 在当前目录生成 .dired 文件
** Curosr Place
C-u C-space

** Help
*C-h f <function-name>*
Show the detail of the function name of Emacs

*C-h k <key> || 'describe-key <key>*
描述当前缓冲区的绑定到<key>的函数。

*C-h v  describe-variable*
描述变量，例如 default-directory

C-h b || 'describe-bindings
列出当前缓冲区的所有键绑定。

C-h m || 'describe-mode
显示所有当前缓冲区可用的major-mode的命令，然后是所有的minor-mode的命令。

C-h l || 'view-lossage
按顺序显示出你刚刚按了的所有按键的序列。

C-h d
Show a list of functions, variables, and other items whose
documentation matches the PATTERN (a list of words or a regexp).

 ** C-h
Show the documentation of the prefix key. E.g: C-x 4 C-h

*** [[https://github.com/nonsequitur/smex/][Smex]]
C-h f, while Smex is active, runs describe-function on the currently selected command.
M-. jumps to the definition of the selected command.
C-h w shows the key bindings for the selected command. (Via where-is.)
** Files
C-x C-f		Open a file
C-x 4 f		Open a file(maybe existed) in a new window without cursoring it
C-x i 		Insert(copy) a file content to curent buffer
C-x C-w 		Save the current buffer with a specified(new) file name (write-file).
** Info
C-x l
Total line of the buffer
C-z/M-: 	buffer-file-name   Show the path name of the current buffrt
E.g: C-z(enter)default-directory
Return the current buffer's default directory (each buffer's directory maybe different)
** Windows
C-x 0 *F4*		Close the current window
C-x 2		Split the selected window into two windows, one above the other (split-window-below).
C-x 3		Split the selected window into two windows, positioned side by side (split-window-right).
C-M-v		Move another window without leaving current window.
C-x + 		Balance-windows to make windows the same heights and widths.
C-x o		Select another window (other-window). [C-u - 1 C-x o] to select last window.
C-x 4 C-f       	find-file-other-window
C-x 4 C-j       	dired-jump-other-window
*C-x 4 C-o*       	display-buffer *Without selecting it!!*
*C-x 4 b*         	switch-to-buffer-other-window *And select it*
C-x 4 .         	xref-find-definitions-other-window
C-x 4 0         	kill-buffer-and-window
C-x 4 c         	clone-indirect-buffer-other-windowd
C-x 4 d         	dired-other-window
C-x 4 f         	find-file-other-window
C-x 4 m         	compose-mail-other-window
C-x 4 r         	find-file-read-only-other-window   [C-x C-q switch read-only]
** Edit
C-q <tab> || 'quoted-insert <tab>				Insert a tab char
*** [[http://ergoemacs.org/emacs/modernization_upcase-word.html][Toggle Case]]
C+x C+u		upcase-region
C+x C+l		downcase-region
** Notice
Some emoji chars (not everyone) may course emacs display wrongly~~
** Tutorial
 [[http://ergoemacs.org/emacs/emacs_fun.html][Fun with Emacs]]
** Swift Mode		:iOS:
https://github.com/swift-emacs/swift-mode
** Colors & Fonts
M-x			list-faces-display (Set the font color)
'		list-colors-display
'		set-face-foreground
'		set-face-background
** SSH
C-x C-f /ssh:root@celwk.com:~/app.js
yum install sshpass
sshpass -p my_password ssh root@celwk.com "ls -lah ~/celwk.com" > /Develop/celwk.txt
** Re-indent
*C-u <TAB>*			Shift an entire parenthetical grouping rigidly sideways so that its first line is properly indented.
C-M-q			Reindent all the lines within one parenthetical grouping.
'indent-code-rigidly	Shift all the lines in the region rigidly sideways, but do not alter lines that start inside comments and strings.
* LISP
** [[https://www.gnu.org/software/emacs/manual/html_node/eintr/car-cdr-_0026-cons.html][car, cdr, cons, nth, nthcdr, setcar, setcdr: Fundamental Functions]]*
CAR and CDR stand for "Contents of the Address Register" and "Contents of the Decrement Register
** [[https://www.gnu.org/software/emacs/manual/html_node/elisp/Iteration.html][while/dolist/dotimes iteration]]
** Macros:
[[https://www.kancloud.cn/ituring/on-lisp/56193][On Lisp]]
宏是用来写程序的程序。这句话意味深长，深入地探究这个问题正是本书的主要目的之一。

深思熟虑地使用宏，可以让程序惊人的清晰简洁。这些好处绝非唾手可得。尽管到最后，宏将被视为世上最自然的
东西，但最初理解它的时候却会举步维艰。部分原因是因为宏比函数更加一般化，所以编写的时候要考虑的事情更
多。
但宏难于理解，最主要的原因是它太另类了。没有任何一门语言有像 Lisp 宏那样的东西。所以学习宏，可能先要
从头脑中清除从其他语言那里潜移默化接受的先入为主的观念。这些观念中，首当其冲就是为那些陈词滥调所累的
程序。凭什么数据结构可以变化，并且其中的数据可以修改，而程序却不能呢？在 Lisp 里，程序就是数据，但其
中深意需要假以时日才能体会到。

在 Lisp 里，程序就是数据!! 在我们的大脑，思想也是数据（细胞，原子）！
** Pipe
#+BEGIN_SRC lisp
(uiop:run-program "sort"
                   :input
                   (uiop:process-info-output
                    (uiop:launch-program "ls"
                                         :output :stream))
                   :output :string)
#+END_SRC
* eLisp
** Edit
*** [[https://www.gnu.org/software/emacs/manual/html_node/emacs/Multi_002dline-Indent.html][Indet]]
C-M-\		indent-region
** Default parameter value:
(defun command (a &optional b)
  (or b (setq b default-value))
  (command-body a b))
** [[https://joaotavora.github.io/yasnippet/snippet-development.html][YASnippet]]
'yas-visit-snippet-file	Choose a snippet to edit
'yas-describe-tables  	List the snippets for this file
C-c & C-n			yas-new-snippet
C-c & C-s			yas-insert-snippet
C-c & C-v			yas-visit-snippet-file

Examples:
#+BEGIN_SRC objective-c
//Timestamp: `(current-time-string)`
for ($1;$2;$3) {
  `yas-selected-text`$0
}
- (${1:id})${2:foo}
{
    return $2;
}

- (void)set${2:$(capitalize yas-text)}:($1)aValue
{
    [$2 autorelease];
    $2 = [aValue retain];
}
$0
#+END_SRC
*** Evaluate multiple arguments
(format "${1:formatted %s}" "${2:value}")
=> "${1:$(ignore-errors (format (yas-field-value 1) (yas-field-value 2)))}"

The second line will be auto updated by the every argument changing!!
*** 'yas-activate-extra-mode
To load an extra mode (not relative to the current file)
#+BEGIN_SRC emacs-lisp
(defun my-org-latex-yas ()
  "Activate org and LaTeX yas expansion in org-mode buffers."
  (yas-minor-mode)
  (yas-activate-extra-mode 'latex-mode))
(add-hook 'org-mode-hook #'my-org-latex-yas)
#+END_SRC
* Programming/Coding
** Collapse Codes
Use for comments mostly maybe, but you can also use to any function definition.
'		hs-minor-mode
key              	binding
---              	-------
C-c @ C-a        	hs-show-all
C-c @ C-t	     	hs-hide-all
C-c C-t 	     	hs-toggle-hiding  [C-c @ C-c]
C-c @ C-l	     	hs-hide-level

** Line number
(global-linum-mode t)
(setq linum-format " ")		;; Insert the left padding without showing the line number closed, normal lu (setq linum-format "  %d  ")
** Code Format		:useful:
<tab>
C-u <tab>
Reindent region! Shift an entire parenthetical grouping rigidly sideways so that its first line is properly indented.
*** Comment
M-;	comment-dwim
Insert or realign comment on current line; if the region is active, comment or uncomment the region instead.
** SLIME (Common Lisp)
C-c C-d f
'slime-describe-function
Describe the function at point.

C-x C-e
'slime-eval-last-expression
运行光标前的指令

C-c M-q
'slime-reindent-defun

M-TAB  [Useful]
'slime-complete-symbol

M-.
'slime-edit-definition

C-c C-s
'slime-complete-form

C-x +
Make all windows the same height (balance-windows).

C-c C-y
'slime-call-defun
在REPL里调用在当前光标处定义的函数

C-j
'slime-repl-newline-and-indent˘

(global-set-key (kbd "C-c C-q") 'slime-close-all-parens-in-sexp)
(global-set-key (kbd "C-c C-c") 'slime-compile-defun)
(global-set-key (kbd "C-c C-l") 'slime-load-file)
(global-set-key (kbd "C-c C-k") 'slime-compile-file)
(global-set-key (kbd "C-M-k") 'slime-repl-clear-buffer)
(local-set-key (kbd "C-c C-z") 'slime-switch-to-output-buffer)

C-c M-o
'slime-repl-clear-buffer
清空当前缓冲区，只留一个提示符。

C-c C-o
'slime-repl-clear-output
从缓冲区里清空之前表达式的输出和结果

(documentation #'name 'function)
(describe #'name)
(defun desc (symbol)
  (documentation symbol 'function))
(desc 'boundp)

change-directory (aka !d, cd)

M-x show-paren-mode 
M-: 	;; Execute emacs command
M-x load-file 	;; For emacs
C-x C-f load-common-lisp-file	;; For slime

C-c M-q
M-x slime-reindent-defun

*M-n, M-x slime-repl-next-input*
M-p, M-x slime-repl-previous-input

M-s, M-x slime-repl-next-matching-input
M-r, M-x slime-repl-previous-matching-input


To cut the text, press C-w.
To copy the text, press M-w.
To paste the text, press C-y.		paste back:	M-y

C-x { is bound to shrink-window-horizontally
C-x } is bound to enlarge-window-horizontally

C-x C-w  	Save to
C-x h 		Select all region 
M-x write-region   Write selected region to a file

全局变量 * , ** , 以及 *** 总是设定为最后三个顶层所返回的值。这些变量在除错的时候很有用。

** Highlights Brackets (高亮括号)
(show-paren-mode 0/1)
(setq show-paren-style 'parenthesis)

;; highlight entire expression
(setq show-paren-style 'expression)

;; highlight brackets if visible, else entire expression
(setq show-paren-style 'mixed)

** Redis
*** INFO Keyspace
To get the key counts for every db
*** DBSIZE
Get the current db's key count
*** SELECT
redis-cli -n ${number} KEYS "u:*" | wc -l
**** How many keys of pattern "u:*" in db number 
* Shell
** In Emacs *shell*	:action:
C-c M-o 		comint-clear-buffer
Clean the buffer
'shell
'shell-command	M-!
** In node.js		:nodejs:
[[https://www.npmjs.com/package/shelljs][ShellJS - Unix shell commands for Node.js]]
** Command Shortkey!
!123	The history command #123
!-2		The last seconde history command (2 command-back)
!cat	The most recent command beginning with "cat"
!!		The last command
!$ 		The last command argument
** Find
find ~ -name *.plist -or -name *Photo*
find ~ -name *.plist -and -name *Photo*
([] ? *)		[Not Regular Expression]
** Basic
date
df -h 		--Disk free space of the system
du -ah		--Disk usage statistics
sort -frub	--ignore-case --reverse --unique --ignore-leading-blanks
** cat = concat
file1.txt file2.txt > joined.txt
** grep
grep
-i  Case insensitive
-w  Word
-v 	Reverse (Only show the not matched)
-n  Show the line number
-c  Count of the matched
-R  Recursive (For folder)
-l  Only list matched file names (with -R)
-L  Reverse of -l (NOT matched file names)
Search files of the specified suffix
--include *.html --include *.js  --include=*.${file_extension}
** xargs  [ Set the input string as process args ]
*** Use the input string as arguments.
cat directory-name-list.txt | sort | uniq | xargs -I {} mkdir -p ~/Desktop/{}
*** Kill  process with the name "badprocess"
ps aux | grep "badprocess" | cut -c 18-23 | xargs kill -9
**** cut -c 11-15 because the process id in the column between 11 to 15
*** git log -n 1 --stat --pretty=format:"" | xargs -0 node test.js
My case: Use git hook to judge is it necessary to restart the server(by pm2)!! Is every path starts with "static/"

** Useful in Mac
tr  Translating characters
sed 's/[aeiou]/_/g'
control+v = \t = tab

cut -c 2-10,30-36 file.txt			Characters
cat file.txt | cut -f 2,6 -d ","     	Delimiter and column
alias hh='h 20 | cut -c 33-'		Only show the last 20 history without the front 33 chars of needless time info

** Save manual to PDF
man -t emacs | open -fa Preview
man -t bash | open -fa Preview
** Pasteboard
cut -f 2,6 students.tsv | pbcopy		Copy the the pasteboard (Send it)
pbcopy < something.txt
pbpaste
alias pbsort='pbpaste | sort | pbcopy'
** Screen Capture
screencapture -v filename				Capture the screen video
** Meta data of file
mdls file  								Get the meta data of the file
mdfind -onlyin ./ 'kMDItemFSName == "*lisp*"'		In recent 2 days
mdfind -onlyin ./ 'kMDItemFSCreationDate >= $time.today(-2)'		In recent 2 days [$time.yesterday $time.this_week(-1) ]
mdfind -onlyin ./ 'kMDItemFSCreationDate >= $time.iso(2019-02-12 12:35:11 -0800)'				Create since that time!
mdfind -onlyin ./ 'kMDItemFSCreationDate >= $time.now(-100000) && kMDItemFSName == "*lisp*"'	In recent 100000 seconds AND file name ...
** Desktop Picure in Login Mode
sudo defaults write com.apple.loginWindow DesktopPicture "/Library/Desktop Pictures/El Capitan 2.jpg"
** last
To list the last login data
** ssh remote issue!!
Don't allow the write permission for GROUP of the ~/.ssh directory!!
https://blog.csdn.net/u011350541/article/details/81070275
https://bjornjohansen.no/ssh-timeout
* Git
** Basic
git init --bare
git clone ax:/repo/weplant_ios.git
git clone root@celwk.com:/repo/weplant_ios.git	(For XCode)
** [[https://aotu.io/notes/2017/04/10/githooks/index.html][Git Hook]]
Auto pull the code after pushing in the server, and restart ONLY if necessary!!!
Edit the #<<.git/hook/post-update>> file
**** unset GIT_DIR
**** cd ~/celwk
**** git pull
**** log=$(git log -n 1 --stat --pretty=format:"")
**** echo "$log" | xargs -0 node restart.js  # Maybe restart is not necessary if only client files are changed? Whatever~
**** log=$(git log -n 1 --stat --pretty=format:"%s %n[%an] %cd")
**** echo -e "$log\n==================================================" >> ~/celwk/log/$(date "+%Y-%m-%d").log
*Mon Mar 11 18:23:31 2019*
** Options to limit the output of git log
Option			Description
-<n>			Show only the last n commits
--since, --after		Limit the commits to those made after the specified date.
--until, --before		Limit the commits to those made before the specified date.
--author			Only show commits in which the author entry matches the specified string.
--committer			Only show commits in which the committer entry matches the specified string.
--grep			Only show commits with a commit message containing the string
-S				Only show commits adding or removing code matching the string
**** git log --pretty="%h - %s" --author='Junio C Hamano' --since="2008-10-01" --before="2008-11-01" --no-merges
** Install the magit package in Emacs
https://magit.vc/
https://magit.vc/manual/magit/index.html
https://magit.vc/manual/magit/Initiating-a-Commit.html
https://magit.vc/manual/magit/Editing-Commit-Messages.html
** Getting started with Magit:
*'magit-status* to see git status, and in the status buffer:
Type ? to get command help.
s to stage files
c c to [[https://magit.vc/manual/magit/Editing-Commit-Messages.html#Editing-Commit-Messages][commit]] (type the message then C-c C-c to submit commit or C-c C-k to cancel)
b b to switch to another branch
Other handy keys:
P u to do a git push
F u to do a git pull
try to press TAB
** Change git folder to bare
https://stackoverflow.com/questions/2199897/how-to-convert-a-normal-git-repository-to-a-bare-one
** Rename git path
git remote set-url origin root@celwk.com:/repo/celwk.git
https://stackoverflow.com/questions/2432764/how-to-change-the-uri-url-for-a-remote-git-repository
** Ignore some foleder
touch .gitignore
git status
git rm -r --cached node_modules &&  echo "node_modules/" >> .gitignore
git rm -r --cached .idea/
git rm -r --cached avatar/
git status
** Don't push
*** git update-index --assume-unchanged ...(file path)
**** Keep change locally, like .gitignore
*** git checkout -- **.cl	
*** git reset --hard	 (All the files, forcely)
**** discard changes

* Works
** Update data from niceschool.cn
alias ns-update="lx 'mysqldump -R -uroot --databases --add-drop-database GreatSchool > ~/database/GreatSchool.sql' && lx-update"
*** Goto the server: lx  [ssh root@niceschool.cn]
*** Backup the data in server: mysqldump
*** Back to local and run
**** Data
lx-update
**** Avatar:
scp -r root@niceschool.cn:~/GreatSchool/avatar/ /Develop/GreatSchool/
* Question
** What is emacs hook?
Just like JavaScript events...

* Finished									#DONE#
** Implement the load all codes in a directory
Because [ (add-to-list 'load-path ...) is just for require/provid]
I have already implement in [[file:~/emacs.d/can.el::2][(load-directory directory &optional match)]]
** Git automatically restart my node.js server after pushing by clients?
[[.git/hook/post-update][Git Hook!]]
* TODO
** Execute C compiler and run it by Shell
Must be Very quickly and convinently(automatically)
** Solution: make  !!
* Links
[[http://celwk.com][Can's Home Page]]