commander.js

参考链接：

http://yijiebuyi.com/blog/2cd3833e8551a302b4ec645031bfd3d0.html

.option('-l, --langu', 'website langueage')

-l如果是命令的简写，必须是后面命令的首字母，不然执行报错。

program

.version('0.1.0')

.option(' -p, --peppers', 'Add peppers')

.option('-P, --pineapple', 'Add pineapple')

.option('-b, --bbq-sauce', 'Add bbq sauce')

.option('-c, --cheese [type]', 'Add the specified type of cheese [marble]', 'marble')

.parse(process.argv);

console.log('you ordered a pizza with:');

if (program.peppers) console.log(' - peppers');

if (program.pineapple) console.log(' - pineapple');

if (program.bbqSauce) console.log(' - bbq');

console.log(' - %s cheese', program.cheese);