1.下载软件包:http://get.adobe.com/cn/flashplayer/

Ubuntu12.04下firefox安装插件flash player 11

install_flash_player_11_linux.i386.tar.gz

2.解压:

$ tar -zxvf install_flash_player_11_linux.i386.tar.gz

3.按照解压后的readme.txt文件安装。

4.查找插件所在文件夹:

~$ find /usr -name mozilla
/usr/lib/mozilla
/usr/share/ca-certificates/mozilla
/usr/share/mozilla
$ ls /usr/lib/mozilla/
plugins
$ ls /usr/lib/mozilla/plugins/
libflashplayer.so                      libtotem-gmp-plugin.so
librhythmbox-itms-detection-plugin.so  libtotem-mully-plugin.so
libtotem-cone-plugin.so                libtotem-narrowspace-plugin.so

5.复制文件:

$ sudo cp libflashplayer.so  /usr/lib/mozilla/plugins/
$ sudo cp -r usr/* /usr