Shell编程

设置变量：
在 shell中设置变量和python中类似：

#!/bin/bash
variable=value
variable='value'
variable="value"
echo $variable
echo ${variable}

单引号和双引号的区别：

#!/bin/bash
name="silence"
sentence1="My name is ${name}"; // My name is silence
sentence2='My name is ${name}'; // My name is ${name}

控制台颜色

// Colors reference
// You can use the following as so:
// console.log(colorCode, data);
// console.log(`${colorCode}some colorful text string${resetCode} rest of string in normal color`);
// 
// ... and so on.
export const reset = "\x1b[0m"
export const bright = "\x1b[1m"
export const dim = "\x1b[2m"
export const underscore = "\x1b[4m"
export const blink = "\x1b[5m"
export const reverse = "\x1b[7m"
export const hidden = "\x1b[8m"
export const black = "\x1b[30m"
export const red = "\x1b[31m"
export const green = "\x1b[32m"
export const yellow = "\x1b[33m"
export const blue = "\x1b[34m"
export const magenta = "\x1b[35m"
export const cyan = "\x1b[36m"
export const white = "\x1b[37m"
export const black = "\x1b[39m"
export const BGblack = "\x1b[40m"
export const BGred = "\x1b[41m"
export const BGgreen = "\x1b[42m"
export const BGyellow = "\x1b[43m"
export const BGblue = "\x1b[44m"
export const BGmagenta = "\x1b[45m"
export const BGcyan = "\x1b[46m"
export const BGwhite = "\x1b[47m"