64位的centos 6 下，安装firefox的flash插件：
1，下载：
打开网址 http://labs.adobe.com/downloads/flashplayer11-2.html
里面有最新的flash插件版本，比如
mkdir fp && cd fp
wget http://download.macromedia.com/pub/labs/flashplatformruntimes/flashplayer11-2/flashplayer11-2_p1_install_lin_64_102611.tar.gz
2，配置：
[simonsun@openos fp]$ tar xvzf flashplayer11-2_p1_install_lin_64_102611.tar.gz
libflashplayer.so
usr/
usr/bin/
usr/share/
usr/share/pixmaps/
usr/share/pixmaps/flash-player-properties.png
usr/share/kde4/
usr/share/kde4/services/
usr/share/kde4/services/kcm_adobe_flash_player.desktop
usr/share/applications/
usr/share/applications/flash-player-properties.desktop
usr/share/icons/
usr/share/icons/hicolor/
usr/share/icons/hicolor/32x32/
usr/share/icons/hicolor/32x32/apps/
usr/share/icons/hicolor/32x32/apps/flash-player-properties.png
usr/share/icons/hicolor/22x22/
usr/share/icons/hicolor/22x22/apps/
usr/share/icons/hicolor/22x22/apps/flash-player-properties.png
usr/share/icons/hicolor/24x24/
usr/share/icons/hicolor/24x24/apps/
usr/share/icons/hicolor/24x24/apps/flash-player-properties.png
usr/share/icons/hicolor/16x16/
usr/share/icons/hicolor/16x16/apps/
usr/share/icons/hicolor/16x16/apps/flash-player-properties.png
usr/share/icons/hicolor/48x48/
usr/share/icons/hicolor/48x48/apps/
usr/share/icons/hicolor/48x48/apps/flash-player-properties.png
usr/lib/
usr/lib/kde4/
[simonsun@openos fp]$ sudo cp libflashplayer.so /usr/lib64/mozilla/plugins/
[simonsun@openos fp]$ sudo chmod 755 /usr/lib64/mozilla/plugins/libflashplayer.so
安装成功后，重启firefox ，在firefox的地址栏目里输入about:plugins，会显示下面结果，表明安装成功。
来源：oschina
链接：https://my.oschina.net/u/98018/blog/89323