有時候我們需要統計一下代碼量，這時候就需要代碼統計工具，推薦cloc。安裝如下：
npm install -g cloc # https://www.npmjs.com/package/cloc
sudo apt-get install cloc # Debian, Ubuntu
sudo yum install cloc # Red Hat, Fedora
sudo pacman -S cloc # Arch
sudo pkg install cloc # FreeBSD
sudo port install cloc # Mac OS X with MacPorts
用法示例：
sl@Li:~/Works/opensource$ cloc pytorch/
5080 text files.
5055 unique files.
1970 files ignored.
http://cloc.sourceforge.net v 1.60 T=22.37 s (188.9 files/s, 38509.4 lines/s)
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Language files blank comment code
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C++ 1455 37191 19300 251819
Python 1005 43787 40777 195427
C/C++ Header 1436 26954 27740 156103
C 44 2617 1009 15844
CMake 138 1816 3076 10990
YAML 25 2162 998 8785
Objective C++ 5 691 286 6216
Bourne Shell 88 803 891 3342
CSS 3 284 82 1355
DOS Batch 14 101 1 353
HTML 4 17 33 235
XML 1 5 7 185
make 4 29 17 68
Teamcenter def 1 20 0 60
Bourne Again Shell 1 5 2 36
Lua 1 5 0 28
PowerShell 1 2 0 15
vim script 1 0 0 3
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SUM: 4227 116489 94219 650864
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更多參考：Count Lines of Code