Environment Variables

Environment Variables
This section lists all the environment variables that are used directly or indirectly by MySQL. Most of
these can also be found in other places in this manual.
Note that any options on the command line take precedence over values specified in option files
and environment variables, and values in option files take precedence over values in environment
variables.
In many cases, it is preferable to use an option file instead of environment variables to modify the
behavior of MySQL. See Section 4.2.3.3, “Using Option Files”.
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