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Environment Variables

Here is a list of 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 will take precedence over
values specified in configuration files and environment variables, and
values in configuration files take precedence over values in environment

In many cases it's preferable to use a configure file instead of
environment variables to modify the behavior of MySQL. Note: Option

`CCX'          Set this to your C++ compiler when running configure.
`CC'           Set this to your C compiler when running configure.
`CFLAGS'       Flags for your C compiler when running configure.
`CXXFLAGS'     Flags for your C++ compiler when running configure.
`DBI_USER'     The default user name for Perl DBI.
`DBI_TRACE'    Used when tracing Perl DBI.
`HOME'         The default path for the `mysql' history file is
`LD_RUN_PATH'  Used to specify where your `' is.
`MYSQL_DEBUG'  Debug-trace options when debugging.
`MYSQL_HISTFILE'The path to the `mysql' history file.
`MYSQL_HOST'   Default host name used by the `mysql' command-line prompt.
`MYSQL_PWD'    The default password when connecting to `mysqld'. Note
               that use of this is insecure!
`MYSQL_TCP_PORT'The default TCP/IP port.
`MYSQL_UNIX_PORT'The default socket; used for connections to `localhost'.
`PATH'         Used by the shell to finds the MySQL programs.
`TMPDIR'       The directory where temporary tables/files are created.
`TZ'           This should be set to your local time zone. Note:
               Timezone problems.
`UMASK_DIR'    The user-directory creation mask when creating
               directories. Note that this is ANDed with `UMASK'!
`UMASK'        The user-file creation mask when creating files.
`USER'         The default user on Windows to use when connecting to

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