给命令行加颜色和优化脚本

[mobeicanyue]

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[mobeicanyue]

https://github.com/1Panel-dev/installer/blob/f47c74e8c9d22f2910fdf68ea61798aa0bac4af4/install.sh#L320

这行这个 b 变量有什么用呢，没看出来

[mobeicanyue]

命令行加了颜色，还有根据 vscode shell 插件，对报警告的地方优化了一下 比如： $()变量使用 双引号，命令加 $()

[wanghe-fit2cloud]

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