Three ways to permanently add environment variables in Linux

How to add /usr/local/mysql/bin as a system variable
Method 1:
vim /etc/profile Add at the end
PATH=/usr/local/mysql/bin:$PATH
export PATH

If it’s the one just now The modification will take effect immediately. You need to execute the following code

[root@CentOS ~]# source /etc/profile

Method 2:
cd /etc/profile.d
vim mysql.sh
PATH=/usr/local/mysql/ bin:$PATH
export PATH

If the modification just now takes effect immediately, you need to execute the following code

[root@CentOS ~]#source /etc/profile.d/mysql.sh

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