作为程序员都习惯在命令行下操作，今天就推荐些命令行神器，可能让你大开眼界。

统计当前目录代码数 line-counter

//https://github.com/MorganZhang100/line-counter
//find . -name '*.py' -exec wc -l {} + 
//wc -l
pip install line-counter  
$ line
Search in /Users/Morgan/Documents/Example/
file count: 4
line count: 839
$ line -d
Search in /Users/Morgan/Documents/Example/
Dir A/file C.c                                             72
Dir A/file D.py                                           268
file A.py                                                 467
file B.c                                                   32
file count: 4
line count: 839

//https://github.com/AlDanial/cloc
npm install -g cloc   
$ cloc wechat-cli.py
       1 text file.
       1 unique file.
       0 files ignored.

github.com/AlDanial/cloc v 1.72  T=0.14 s (7.4 files/s,779.4 lines/s)
-------------------------------------------------------------------------------
Language                     files          blank        comment           code
-------------------------------------------------------------------------------
Python                           1             12              7             87
-------------------------------------------------------------------------------

命令行纠错 thefuck

//https://github.com/nvbn/thefuck
pip install thefuck
➜ apt-get install vim
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/),are you root?

➜ fuck
sudo apt-get install vim
[sudo] password for nvbn:
Reading package lists... Done

MysqL 客户端，支持语法高亮和命令补全 mycli

// https://github.com/dbcli/mycli
pip install -U mycli
$ mycli -h localhost -uroot
Password:
Version: 1.8.0
Chat: https://gitter.im/dbcli/mycli
Mail: https://groups.google.com/forum/#!forum/mycli-users
Home: http://mycli.net
Thanks to the contributor - Tech Blue Software
MysqL root@localhost:(none)> use test
You are now connected to database "test" as user "root"
Time: 0.005s
MysqL root@localhost:test> show t
                                  TABLE STATUS
                                  TABLE STATUS
                                  TABLES
                                  TABLES
                                  TRIGGERS
                                  TRIGGERS
                                  STATUS
 [F2] Smart Completion: ON  [F3] Multiline: OFF  [F4] Emacs-mode

json文件处理以及格式化显示，支持高亮，可以替换python -m json.tool

//https://github.com/stedolan/jq http://blog.chinaunix.net/uid-24774106-id-3830242.html
$ cat json_raw.txt 
{"name":"Google","location":{"street":"1600 Amphitheatre Parkway","city":"Mountain View","state":"California","country":"US"},"employees":[{"name":"Michael","division":"Engineering"},{"name":"Laura","division":"HR"},{"name":"Elise","division":"Marketing"}]}
cat json_raw.txt | jq '.location.state'
    "California"
 echo '{"foo": 42,"bar": "less interesting data"}' | jq .nofoo
    null
cat json_raw.txt | jq 'keys'
[
  "employees","location","name"
]

shell脚本静态检查工具 shellcheck

//https://github.com/koalaman/shellcheck
apt-get install shellcheck
shellcheck test.sh

多线程下载工具 axel

//  axel.alioth.debian.org/
sudo apt-get install axel
axel -n 10 -a <url>
axel -n 20 http://centos.ustc.edu.cn/centos/7/isos/x86_64/CentOS-7-x86_64-Minimal-1511.iso

命令行请求工具 httpie

//https://httpie.org/ https://github.com/jakubroztocil/httpie
pip install --upgrade httpie
http PUT example.org X-API-Token:123 name=John
http -f POST example.org hello=World
http example.org/file > file
http httpbin.org/post  --  -name-starting-with-dash=foo -Unusual-Header:bar
POST /post HTTP/1.1
-Unusual-Header: bar
Content-Type: application/json

{
    "-name-starting-with-dash": "value"
}

命令行文档 tldr

// https://github.com/tldr-pages/tldr
npm install -g tldr
$ tldr curl
Cache is out of date,you should run "tldr --update"

  curl
  Transfers data from or to a server.
  Supports most protocols including HTTP,FTP,POP.

  - Download a URL to a file:
    curl "URL" -o filename

  - Send form-encoded data:
    curl --data name=bob http://localhost/form

  - Send JSON data:
    curl -X POST -H "Content-Type: application/json" -d '{"name":"bob"}' http://
localhost/login

  - Specify an HTTP method:
    curl -X DELETE http://localhost/item/123

  - Head request:
    curl --head http://localhost

  - Include an extra header:
    curl -H "X-MyHeader: 123" http://localhost

  - Pass a user name and password for server authentication:
    curl -u myusername:mypassword http://localhost

命令行提示工具 cheat

//https://github.com/chrisallenlane/cheat
 pip install cheat
cheat tar
# To extract an uncompressed archive: 
tar -xvf '/path/to/foo.tar'

# To extract a .gz archive:
tar -xzvf '/path/to/foo.tgz'

# To create a .gz archive:
tar -czvf '/path/to/foo.tgz' '/path/to/foo/'

# To extract a .bz2 archive:
tar -xjvf '/path/to/foo.tgz'

# To create a .bz2 archive:
tar -cjvf '/path/to/foo.tgz' '/path/to/foo/'

后台运行和管理进程 pm2 同python的supervisoerd

//http://pm2.keymetrics.io/
npm install pm2 -g 
pm2 list

在命令行实时监控 Nginx 的神器 ngxtop

//https://linux.cn/article-3205-1.html
pip install ngxtop
ngxtop -n 20
ngxtop info

python代码格式规范化工具 yapf

//https://github.com/google/yapf 
 pip install yapf
>>> from yapf.yapflib.yapf_api import FormatCode  # reformat a string of code

>>> FormatCode("f ( a = 1,b = 2 )")
'f(a=1,b=2)\n'

命令行下模糊搜索工具 fzf

//https://github.com/junegunn/fzf
brew install fzf
find * -type f | fzf > selected

网易云音乐命令行版本 musicBox

//https://github.com/darknessomi/musicBox
pip(3) install NetEase-MusicBox

$ git clone https://github.com/darknessomi/musicBox.git && cd musicBox
$ python(3) setup.py install

多线程下载工具 aria2

//https://github.com/aria2/aria2
aria2c http://a/f.iso ftp://b/f.iso
aria2 下载百度云链接https://github.com/acgotaku/BaiduExporter

比 python -m SimpleHTTPServer 更好的 http 服务器 http-server

//https://github.com/indexzero/http-server
npm install http-server -g
 http-server 8888
alias hs="source ~/.bash_profile && http-server -a $(ifconfig en0 | grep 'inet ' | cut -d ' ' -f 2)"
//浏览器打开http://localhost:8888

获取汉字拼音 pypinyin

pip install pypinyin

$ pypinyin 有哪些命令行的软件堪称神器

yǒu něi xiē mìng lìng xíng de ruǎn jiàn kān chē

Nginx配置静态分析器

https://github.com/yandex/gixy 
pip install gixy
gixy /etc/Nginx/Nginx.conf

HTTP Prompt

pip install http-prompt
pip install httpie
# No parameters initially
> httpie
http http://localhost

# Send a request with some overrided parameters
> post /api/v1 --form name=jane

# Current state remains intact
> httpie
http http://localhost

node ppt

https://github.com/ksky521/nodePPT
npm install -g nodeppt 
执行 nodeppt start
访问 http://127.0.0.1:8080/
在线demo： http://js8.in/nodeppt/

检查浏览器的兼容性

npm install -g caniuse-cmd
$ caniuse flex
Flexible Box Layout Module √ 83.86% Θ 13.63% [W3C Candidate Recommendation]
  Method of positioning elements in horizontal or vertical stacks. Support
  includes the support for the all properties prefixed with `flex` as well as
  `display: flex`,`display: inline-flex`,`align-content`,`align-items`,`align-self`,`justify-content` and `order`. #CSS3

  IE × 5.5+ Θ 10+ᵖ² Θ 11⁴
  Edge √
  Firefox Θ 2+ᵖ¹ Θ 22+³ √ 28+
  Chrome Θ 4+ᵖ¹ √ 21+ᵖ √ 29+
  Safari Θ 3.1+ᵖ¹ √ 6.1+ᵖ √ 9+
  Opera × 9+ √ 12.1+ √ 15+ᵖ √ 17+

    ¹Only supports the [old
    flexBox](http://www.w3.org/TR/2009/WD-css3-flexBox-20090723) specification
    and does not support wrapping.
    ²Only supports the [2012
    Syntax](http://www.w3.org/TR/2012/WD-css3-flexBox-20120322/)
    ³Does not support flex-wrap,flex-flow or align-content properties
    ⁴Partial support is due to large amount of bugs present (see known issues)
   ⓘ  Most partial support refers to supporting an [older
   version](http://www.w3.org/TR/2009/WD-css3-flexBox-20090723/) of the
   specification or an [older
   Syntax](http://www.w3.org/TR/2012/WD-css3-flexBox-20120322/).

命令行翻译工具

npm install terminal-translate -g
$ tl great

  ~ great - [greɪt]   美[ɡret]   英[greɪt]
  ~ 伟大的

   -  n. 大师；大人物；伟人们
   -  adj. 伟大的，重大的；极好的，好的；主要的

   1. Great
     伟大的,Great,Great

   2. Great Lakes
     五大湖,五大湖,大湖区

   3. Great Recession
     经济大衰退,大衰退,大萧条

短域名工具

npm i -g u.nu

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