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Showing posts from February, 2021

How to open port on centos 8

 [user1@centos-server ~]$ sudo firewall-cmd --zone=public --permanent --add-port 3306/tcp [sudo] password for user1: success [user1@centos-server ~]$ sudo firewall-cmd --reload success [user1@centos-server ~]$

JSON vs XML

 json is javascript(programming language) object notation.