国产xxxx99真实实拍_久久不雅视频_高清韩国a级特黄毛片_嗯老师别我我受不了了小说

資訊專欄INFORMATION COLUMN

Yet Another shell can run anywhere Python exists.

Jinkey / 3389人閱讀

PySh

Another shell can run anywhere Python exists.

Why another shell

Because it"s fun.

Supported shell feature

Common shell features can be found here. Pysh already have:

|, Pipe output

$var, Use value for variable

" ", double quote (allows variable and command expansion)

Usage
git clone https://github.com/jiacai2050/pysh.git
cd pysh
python -m pysh.shell

## Demo
> ls
.git
.gitignore
.pre-commit-config.yaml
assets
pysh
README.md

> echo $HOME
/Users/liujiacai

> echo ${JAVA_HOME}
/Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home

> pwd
/Users/liujiacai/codes/python/pysh

> cd ..
/Users/liujiacai/codes/python

> pwd
/Users/liujiacai/codes/python

> cat /etc/hosts | grep 127.0.0.1
127.0.0.1       localhost

> grep 127.0.0.1 /etc/hosts
127.0.0.1       localhost

Supported commands can be found here.

More commands are on the way. PR welcomed !

Have fun ?

How PySh work

A shell in unix box is a bridge bewteen user and the kernel through system call.

As we can see from above picture (taken from here), some commands (eg ls, cat) are passed to other programs, while built-in commands (eg cd, exit) are executed inside shell. This way can keep shell small in size and strong in function.

In order to let PySh run anywhere (hi, Windows, I mean you), PySh implmented all commands in its core, so there is no differences bewteen builtins and one that is not, also you can say all commands are builtins.

One thing I should mention here is:

Pipelines between different commands are supported by generator in Python.

So, every command should yield something, this is like s-expression in Lisp world, where every s-expression should return a value.

How to contribute

PySh use pre-commit to ensure code quality, so you should install it before contribute.

Fork and PR ?

文章版權歸作者所有,未經允許請勿轉載,若此文章存在違規行為,您可以聯系管理員刪除。

轉載請注明本文地址:http://specialneedsforspecialkids.com/yun/38072.html

相關文章

  • 使用REACT VR構建web虛擬現實

    Building virtual reality experiences on the web with React VR Over the past year, virtual reality has made major strides toward becoming the next computing platform. With Oculus Rift, consumer-grade h...

    anquan 評論0 收藏0
  • 剖析 Laravel 計劃任務--避免重復

    摘要:持有雞的人是唯一被允許談話的人。這樣可以確保人們互不說話,也有自己的空間。所以當作業第一次啟動時,創建一個互斥,然后每次作業運行時,它檢查互斥是否存在,只有在沒有工作的情況下運行。 譯文GitHub https://github.com/yuansir/diving-laravel-zh 原文鏈接 https://divinglaravel.com/task-scheduling/pr...

    li21 評論0 收藏0
  • Embedding Python modules into C applications.

    In official Doc. of Python 3, there is a short introduction to embedding Python in another application like C/C++ (seeEmbedding Python in Another Application). The common procedure is as follows, w...

    youkede 評論0 收藏0
  • 線程的狀態

    摘要:運行中,線程狀態中并沒有這一狀態,但是實際執行中是有的可運行狀態的線程獲得了時間片,執行程序代碼。其他阻塞運行的線程發出了請求時,會把該線程置為阻塞狀態。當處理完畢時,線程重新轉入可運行狀態。 Thread.State 首先看JDK中的代碼: java.lang.Thread.State /** * A thread state. A thread can be i...

    zhou_you 評論0 收藏0

發表評論

0條評論

Jinkey

|高級講師

TA的文章

閱讀更多
最新活動
閱讀需要支付1元查看
<