npm-system-cmd.md

基于npm的系统命令开发

使npm全局安装包后，添加系统命令

package.json添加bin字段

{
  "cmd-name": "./bin/index.js"
}

添加后，全局安装该包时，npm会将命令cmd-name加入系统命令

获取命令行参数

命令行执行cmd-name parama1 parama2相当于执行node ./bin/index.js parama1 parama2
在./bin/index.js中获取命令行参数

#!/usr/bin/env node

console.log(process.argv) // ["node", "./bin/index.js", “ parama1”， “parama2”]

输出带颜色的log

// 输出黄色log
console.log('\x1b[33m', log, '\x1b[0m')

\x1b[0m代表清除前面设置的格式，不清除的话，后面的所有输出都会变色
颜色列表：
Reset = "\x1b[0m" Bright = "\x1b[1m" Dim = "\x1b[2m" Underscore = "\x1b[4m" Blink = "\x1b[5m" Reverse = "\x1b[7m" Hidden = "\x1b[8m"

FgBlack = "\x1b[30m" FgRed = "\x1b[31m" FgGreen = "\x1b[32m" FgYellow = "\x1b[33m" FgBlue = "\x1b[34m" FgMagenta = "\x1b[35m" FgCyan = "\x1b[36m" FgWhite = "\x1b[37m"

BgBlack = "\x1b[40m" BgRed = "\x1b[41m" BgGreen = "\x1b[42m" BgYellow = "\x1b[43m" BgBlue = "\x1b[44m" BgMagenta = "\x1b[45m" BgCyan = "\x1b[46m" BgWhite = "\x1b[47m"