1. Firefox
https://get.adobe.com/flashplayer
su root
cd /home/labuser/Desktop/linux
ls
rpm -ivh flash-player-npapi-24.0.0.194-release.x86_64.rpm
rpm安装的Flash在 /usr/lib64/ 下面，如果你的Firefox不在这里的话，只能替换
about:plugins
tar -jxf flash_player_npapi_linux.x86_64.tar.gz
cd /flash_player_npapi_linux.x86_64
cp libflashplayer.so /usr/lib/mozilla/plugins/ (根据about:plugins出来的路径写)
2. Chrome
同上
原文：http://www.cnblogs.com/chou-er/p/6237734.html