1。先下载安装文件:
http://fpdownload.macromedia.com/get/flashplayer/current/install_flash_player_9_linux.tar.gz
2。将此文件安装到opt目录下:
tar -xzvf install_flash_player_9_linux.tar.gz -C /opt

当然首先要有root权限,可通过su后输入密码取得。

3。进入安装目录:cd install_flash_player_9_linux/
执行安装文件:./flashplayer-installer

4。按ENTER后继续。。。
输入要安装的浏览器的路径:(红色部分)
Please enter the installation path of the Mozilla, Netscape,
or Opera browser (i.e., /usr/lib/mozilla): /usr/lib/firefox

5。是否执行安装:
Proceed with the installation? (y/n/q): y