Linux Shell 1

Two ways to print info from terminal - echo & printf 

- Echo 

a. Exclamation mark is supported in single quotation mark 

b. Exclamation mark is NOT supported with double quation marks - use "" to escape

- printf 

- Set Colors for fonts and background 

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原文地址：https://www.cnblogs.com/jessicayang/p/7305815.html