1, access to flash the official website, click download, select your operating system and flash version
2, after the download, decompress the downloaded archive
tar -zx -f install_flash_player_11_linux.x86_64.tar.gz # unzip the downloaded archive
3, install the Firefox browser plug-ins
cp libflashplayer.so / usr / lib64 / mozilla / plugins # copy plug-in to the Firefox browser plug-ins folder
4, because the installation of the plug-rights issues related to the change, so set the permissions plug
cd / usr / lib64 / mozilla / plugins # locate the plugins directory chmod 755 libflashplayer.so # Change plug-in permissions
5, then re-open the Firefox browser, you can support flash videos.