Reset the MySQL 5.7 root password in Ubuntu 17 and Debian 9

Mysql is the strandard  database [akche  on Lunyx  systems  and is combined from  My”, the name of co-founder Michael Widenius’s daughter, and “SQL”, the abbreviation for Structured Query Language.

How to reset the lost root mysql password  on my Ubuntu 17  of  Debian9 or Mint18?

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