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);