mysql默认安装位置及各目录作用

On Windows, the default installation directory is C:\mysql, which has the following subdirectories:

Directory	Contents of Directory
bin	Client programs and the mysqld server
data	Log files, databases
Docs	Documentation
examples	Example programs and scripts
include	Include (header) files
lib	Libraries
scripts	Utility scripts
share	Error message files

Installations created from Linux RPM distributions result in files under the following system directories:

Directory	Contents of Directory
/usr/bin	Client programs and scripts
/usr/sbin	The mysqld server
/var/lib/mysql	Log files, databases
/usr/share/doc/packages	Documentation
include/usr/include/mysql	Include (header) files
lib/usr/lib/mysql	Libraries
/usr/share/mysql	Error message and character set files
sql-bench/usr/share/sql-bench	Benchmarks

On Unix, a tar file binary distribution is installed by unpacking it at the installation location you choose (typically/usr/local/mysql) and creates the following directories in that location:

Directory	Contents of Directory
bin	Client programs and the mysqld server
data	Log files, databases
docs	Documentation, ChangeLog
include	Include (header) files
lib	Libraries
scripts	mysql_install_db
share/mysql	Error message files
sql-bench	Benchmarks

A source distribution is installed after you configure and compile it. By default, the installation step installs files under/usr/local, in the following subdirectories:

Directory	Contents of Directory
bin	Client programs and scripts
include/mysql	Include (header) files
info	Documentation in Info format
lib/mysql	Libraries
libexec	The mysqld server
share/mysql	Error message files
sql-bench	Benchmarks and crash-me test
var	Databases and log files

http://blog.chinaunix.net/uid-7692530-id-2567575.html