1、sudo apt-get install flashplugin-nonfree
2、至Abobe官网下载最新的Linux版本flash安装包,选择.tar.gz类型,下载(https://get.adobe.com/flashplayer/download/?installer=Flash_Player_11.2_for_other_Linux_(.tar.gz)_64-bit&standalone=1)
3、tar zxvf install_flash_player_11_linux.x86_64.tar.gz(包名)
4、sudo mv libflashplayer.so /usr/lib/mozilla/plugins
5、重启火狐Firefox