apache2编译mod_auth_mysql
/usr/local/apache2/bin/apxs -ica -lmysqlclient -I/opt/mysql/include -L/opt/mysql/lib/mysql mod_auth_mysql.c

apache2.2.x 编译 limitipconn/mod_evasive20/mod_bw
/usr/local/apache2/bin/apxs -ica mod_limitipconn.c
/usr/local/apache2/bin/apxs -ica mod_evasive20.c
/usr/local/apache2/bin/apxs -ica mod_bw.c
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某目录下全部文件访问下载
利用mod_headers 。

<VirtualHost *:80>
    DocumentRoot /www.myweb.com
    ServerName www.myweb.com
    Header append Content-Disposition "attachment;"
</VirtualHost>
<Directory /www.myweb.com>
AllowOverride All
ForceType application/octet-stream
</Directory>

linux: G_BROKEN_FILENAMES = 1 ，gLib认为文件名是以本地编码而不是UTF-8。