Open NBR-hugh opened 6 years ago
经过赛季
刚帅
requirements.txt
?
pip freeze >requirements.txt
不怪 anaconda 本身,如果你是数据科学工作者,并不希望被环境折腾,利用这样的套件是避免底层环境配置的好办法。但是对于python 的开发者来说,了解python 的生态系统,能够自己动手配置适合自己开发的环境还是很有必要的。
[ cat cp date df echo expr kill launchctl ln mkdir pax pwd rmdir sleep sync test wait4path bash chmod csh dd domainname ed hostname ksh link ls mv ps rm sh stty tcsh unlink zsh
Understanding the /bin, /sbin, /usr/bin, /usr/sbin Split => 计算机发展初期硬盘过小的遗留产物
- #Q shell 的工作原理
how shell work
- => [What is a shell and how does it work? · OSKAR](https://oskarth.com/unix01/)
- => [xv6 - DRAFT as of September 3, 2014 - book-rev8.pdf](https://pdos.csail.mit.edu/6.828/2014/xv6/book-rev8.pdf)
- > The shell is an ordinary program that reads commands From the user and executes them.and is the primary user interface to traditional Unix-like systems.
- ![Screen Shot 2018-03-14 at 17.40.04.png](https://dynalist.io/u/RFPFxXvooSeHNYyOQAURgAmk)
- 术语:
- xv6
the sequence of events
- 个人理解:其实核心就2个动作
- 1. 位置: 找到执行文件
- 2.动作: 执行文件,返回结果
GhostText测试