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有2个方法  一、可以修改my.ini 配置参数(linux下面是 my.cnf);  [quote][client]  port=3306  default-character-set=utf8  host=localhost  user=root  password=1[/quote]  具体的其他参数都可以在这里修改  二、可以修改环境变量  MYSQL_HOST 代表主机名  USER 为用户名  MYSQL_PWD 为密码  更多的参数请自行查看mysql的帮助文档，下面是英文的表格 

Variable

Description

CXX

The name of your C++ compiler (for running configure ).

CC

The name of your C compiler (for running configure ).

CFLAGS

Flags for your C compiler (for running configure ).

CXXFLAGS

Flags for your C++ compiler (for running configure ).

DBI_USER

The default user name for Perl DBI.

DBI_TRACE

Trace options for Perl DBI.

HOME

The default path for the mysql history file is $HOME/.mysql_history .

LD_RUN_PATH

Used to specify the location of libmysqlclient.so .

MYSQL_DEBUG

Debug trace options when debugging.

MYSQL_GROUP_SUFFIX

Option group suffix value (like specifying --defaults-group-suffix ).

MYSQL_HISTFILE

The path to the mysql history file. If this variable is set, its value overrides the default for $HOME/.mysql_history .

MYSQL_HOME

The path to the directory in which the server-specific my.cnf file resides (as of MySQL 5.0.3).

MYSQL_HOST

The default host name used by the mysql command-line client.

MYSQL_PS1

The command prompt to use in the mysql command-line client.

MYSQL_PWD

The default password when connecting to mysqld . Note that using this is insecure. See Section 5.5.6.2, “End-User Guidelines for Password Security”.

MYSQL_TCP_PORT

The default TCP/IP port number.

MYSQL_UNIX_PORT

The default Unix socket file name; used for connections to localhost .

PATH

Used by the shell to find MySQL programs.

TMPDIR

The directory where temporary files are created.

TZ

This should be set to your local time zone. See Section B.1.4.6, “Time Zone Problems”.

UMASK

The user-file creation mode when creating files. See note following table.

UMASK_DIR

The user-directory creation mode when creating directories. See note following table.

USER

The default user name on Windows and NetWare used when connecting to mysqld .