and linux `` '' '' distinction

``: Anti-quotation marks, get command execution results 

Print Date:

echo `date` -" Output December 8, 2017 Friday 11:59:48 CST

 

'': Removing the special meaning of all the symbols.

 

"": Do not remove the special meaning of the symbols.

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Origin www.cnblogs.com/sunpengblog/p/11424636.html