---
tags: HACK a nice day
---

# Linux Command Night

* [pi官方文件](https://www.raspberrypi.org/documentation/linux/)
* [活動資訊](https://fb.me/e/1grMAAayz)
* [HACK a nice day 社團](https://www.facebook.com/groups/hackanicedays)
* 鳥哥的Linux 私房菜
* [第十章、認識與學習BASH](http://linux.vbird.org/linux_basic/0320bash.php)
* [第十二章、學習 Shell Scripts](http://linux.vbird.org/linux_basic/0340bashshell-scripts.php)
* [第十七章、認識系統服務 (daemons)](http://linux.vbird.org/linux_basic/0560daemons.php)

## 你在系統的哪一層?



* Linux --> kernel
* Linus Torvalds
* https://zh.wikipedia.org/wiki/UNIX
* Richard Stallman
* 1983, GNU (`G`NU's `N`ot `U`nix)
* GNU Hurd
* [關於GNU 專案](https://www.gnu.org/gnu/thegnuproject.zh-tw.html)
* [用十分鐘瞭解 《開放原始碼的世界》](https://www.slideshare.net/ccckmit/ss-65878761)

* 紀錄片
* The Code (2001)
* 《作業系統革命》Revolution OS

shell 示意



## 進入 shell

* 介面
* tty
* ssh (pts)
* UART (pi)
* tools
* putty
* xshell
* MobaXterm

## 初探 Linux

* kernel space vs user space
* strace
* ps
* pid
* init
* pstree
* (shell) /etc/passwd
* dmesg
* "Run /sbin/init as init process"

## Linux 指令結構

``/path/to/cmd parm1 parm2...``

* man rm
* man date
* man mkdir
* \-\-help
* man man
* man printf
* man 3 printf
* man sleep
* man 3 sleep
* man ssh

## Filesystem

* FHS, Filesystem Hierarchy Standard
* distribution
* distrowatch
* Home
* whoami
* $HOME
* cd ~
* pwd
* /etc/passwd
* ./
* ../
* autocomplete

## Linux commands

### basic

* mv
* df
* df -h
* du
* du -sh
* find
* find -name "*.[ch]"
* find -type f
* grep
* grep -w
* awk
* awk -F ',' '{print $2}'

### package management

* rpm vs dpkg
* yum --> rpm
* apt --> dpkg
* apt
* apt-get update
* apt-cache search
* dpkg -l
* dpkg -L tree
* dpkg -S /usr/bin/tree

### archiving & zip

* wget http://mama.indstate.edu/users/ice/tree/src/tree-1.8.0.tgz
* gzip -d tree-1.8.0.tgz
* tar -xf tree-1.8.0.tar
* tar
* tar -zcvf dest.tar.gz srcDir/
* tar -zxvf dest.tar.gz
* unzip
* zip
* zip myfile.zip folder/

### permission

* chmod
* chmod a+x file
* chown
* chown -R andrew:andrew folder

### redirection & pipes

* >, >>
* /dev/null
* 2>&1
* xargs
* \
* && ||
* touch xxx
* test -f xxx && echo "ok" || echo "no"
* test -f zzzzzzz && echo "ok" || echo "no"

### network

* ssh
* scp
* ifconfig
* route
* route -n
* route add ...
* ping
* wget
* curl
* https://github.com/andrewintw/line-notify-from-cli

## 文字編輯器

$ sudo apt-get install vim
$ sudo update-alternatives --config editor

* vim
* search
* yy p
* cc p
* v V
* G gg
* :wq
* :q!
* undo redo


## Linux Users

* passwd
* su -
* sudo passwd root
* useradd
* userdel
* sudo
* `usermod -a -G sudo andrew`

## process

* &
* ctrl+Z
* jobs
* fg
* bg
* kill

## Linux Shell

* env
* set
* source or .
* export
* [.bashrc](https://www.raspberrypi.org/documentation/linux/usage/bashrc.md)
* alias
* ~/.bash_aliases
* PS1
* /etc/skel/

## Daemons & Services

* [cron](https://www.raspberrypi.org/documentation/linux/usage/cron.md)
* https://crontab.guru/
* [systemd](https://www.raspberrypi.org/documentation/linux/usage/systemd.md)
* [rc.local](https://www.raspberrypi.org/documentation/linux/usage/rc-local.md)

## Shell Script

* ex: https://pm25.lass-net.org/
* curl
* ex: http://ftp.tku.edu.tw/index.php
* wget

~ END ~