# 實作筆記
* [linux 解壓縮](http://note.drx.tw/2008/04/command.html)
* [make file 筆記](http://140.96.101.177:8888/c/makefile/#compile-code-with-makefile:2bf0eb474434398a4f8d2f74cf4b959e)
* https://wwssllabcd.github.io/blog/2016/10/03/how-to-write-make-file/

* [佔有linux空間查詢](https://banco.pixnet.net/blog/post/21967119)
* `du -B M --max-depth=1 | sort -g`

* [Enforce Return After Callback](https://eslint.org/docs/2.0.0/rules/callback-return)
* ssh without password
* https://xenby.com/b/220-%e6%95%99%e5%ad%b8-%e7%94%a2%e7%94%9fssh-key%e4%b8%a6%e4%b8%94%e9%80%8f%e9%81%8ekey%e9%80%b2%e8%a1%8c%e5%85%8d%e5%af%86%e7%a2%bc%e7%99%bb%e5%85%a5
* https://code.visualstudio.com/docs/remote/troubleshooting
* local generate key-->pub key copy to remote host --> chmod dir .ssh to 700 and file authorized_keys to 600(optional chown)
* vscode remote development config
* #防止timeout，每120秒就向server發送keep-alive封包，超過60次無回應斷線
ServerAliveInterval 120
ServerAliveCountMax 60
* [vscode 寫code好用工具](https://larrylu.blog/vscode-tips-fe3320f9032a)
* [tmux setting]
* shell: `tmux source-file ~/.tmux.conf`

# example: /usr/share/doc/tmux/examples/
# {{{ screen-keys.conf
# $Id: screen-keys.conf,v 1.7 2010/07/31 11:39:13 nicm Exp $
#
# By Nicholas Marriott. Public domain.
#
# This configuration file binds many of the common GNU screen key bindings to
# appropriate tmux key bindings. Note that for some key bindings there is no
# tmux analogue and also that this set omits binding some commands available in
# tmux but not in screen.
#
# Note this is only a selection of key bindings and they are in addition to the
# normal tmux key bindings. This is intended as an example not as to be used
# as-is.

# Set the prefix to ^A.
unbind C-b
set -g prefix ^A
bind a send-prefix

# Bind appropriate commands similar to screen.
# lockscreen ^X x
unbind ^X
bind ^X lock-server
unbind x
bind x lock-server

# screen ^C c
unbind ^C
bind ^C new-window
# bind c
bind c new-window

# detach ^D d
unbind ^D
bind ^D detach

# displays *
unbind *
bind * list-clients

# next ^@ ^N sp n
unbind ^@
bind ^@ next-window
unbind ^N
bind ^N next-window
unbind " "
bind " " next-window
unbind n
bind n next-window

# title A
unbind A
bind A command-prompt "rename-window %%"

# other ^A
unbind ^A
bind ^A last-window

# prev ^H ^P p ^?
unbind ^H
bind ^H previous-window
unbind ^P
bind ^P previous-window
unbind p
bind p previous-window
unbind BSpace
bind BSpace previous-window

# windows ^W w
unbind ^W
bind ^W list-windows
unbind w
bind w list-windows

# quit \
unbind \
bind \ confirm-before "kill-server"

# kill K k
unbind K
bind K confirm-before "kill-window"
unbind k
bind k confirm-before "kill-window"

# redisplay ^L l
unbind ^L
bind ^L refresh-client
unbind l
bind l refresh-client

# split -v |
unbind |
bind | split-window

# :kB: focus up
unbind Tab
bind Tab select-pane -t:.+
unbind BTab
bind BTab select-pane -t:.-

# " windowlist -b
unbind '"'
bind '"' choose-window
# }}}
# {{{ vim-keys.conf
# $Id: vim-keys.conf,v 1.2 2010/09/18 09:36:15 nicm Exp $
#
# vim-keys.conf, v1.2 2010/09/12
#
# By Daniel Thau.  Public domain.
#
# This configuration file binds many vi- and vim-like bindings to the
# appropriate tmux key bindings.  Note that for many key bindings there is no
# tmux analogue.  This is intended for tmux 1.3, which handles pane selection
# differently from the previous versions

# split windows like vim
# vim's definition of a horizontal/vertical split is reversed from tmux's
bind s split-window -v
bind v split-window -h

# move around panes with hjkl, as one would in vim after pressing ctrl-w
#bind h select-pane -L
#bind j select-pane -D
#bind k select-pane -U
#bind l select-pane -R

# resize panes like vim
# feel free to change the "1" to however many lines you want to resize by, only
# one at a time can be slow
bind < resize-pane -L 1
bind > resize-pane -R 1
bind - resize-pane -D 1
bind + resize-pane -U 1

# bind : to command-prompt like vim
# this is the default in tmux already
bind : command-prompt

# vi-style controls for copy mode
setw -g mode-keys vi
# }}}

set -g default-terminal "screen-256color" # + "tmux -2" => 256 color
set -g status-justify left
set -g status-interval 15 # 15 sec refresh
set -g display-time 3000
set -g status-bg black
set -g status-fg white
set-window-option -g window-status-current-fg blue
set-window-option -g window-status-current-bg yellow
set-window-option -g window-status-current-attr default # bright
set -g status-left-length 15
set -g status-right-length 55
#set -g status-left "#[fg=white,bg=blue] > #I #W < #[default] |" # 0:bash
#set -g status-left "#[fg=white,bg=blue] > #S < #[default] |" # session-name
set -g status-left ""
set -g status-right "#[fg=green]%H:%M #[default]#[fg=magenta,bright]#[default]"

* [Saving a read-only file edited in vi / vim](https://www.geekyboy.com/archives/629)
* https://blog.niclin.tw/2018/08/19/%E5%B7%A5%E7%A8%8B%E5%B8%AB%E6%87%89%E8%A9%B2%E7%9F%A5%E9%81%93%E7%9A%84-c10k-%E5%95%8F%E9%A1%8C/
* ftp server install -->https://hackmd.io/@uNmR8bp1S62yvV_R6zJQng/SycNmIWG8
* 若無法裝wireshark，可用tcpdump 抓封包，並存成file，再由wireshark打開

* 更改route
`sudo route del -net 0.0.0.0 gw 192.168.178.1 netmask 0.0.0.0 dev eth0`

* lib version
`dpkg -l | grep libxxx`
![](https://i.imgur.com/oJHz65Y.png)

* 比bash好看的shell

Ubuntu 安裝 zsh：
前置準備，需要先安裝下列的套件：
sudo apt-get install wget curl git

Installing Zsh:
sudo apt install zsh

修改預設的 shell 為 zsh:
chsh -s $(which zsh)

檢查目前使用中的 shell:
echo $SHELL

Install Oh-my-Zsh:
sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"

* debug for memory leak
`valgrind --leak-check=full --track-origins=yes --log-file="log"`
###### tags: `linux` `ftp` `tcpdump` `tmux` `vscode note` `javascript` `make file`