The flash player is not coming in Ubuntu 12.04 LTS by default. So in firefox you cannot play flash in the default ubuntu installation. But you can manualy install flash player from a PPA.
Now a days flash is replaced by HTML5. But still for playing video and play some games flash player is a must. HTML 5 is getting adopted in a faster way. Now adobe is dropping linux support of flash player. There are some opensource alternatives to flash called Gnash and Lightspark. Gnash is somewhat stable now and Lightspark is in still alpha stage.
You can install adobe flash player on Ubuntu 12.04 LTS in an easy way.
Adobe Flash Player in Ubuntu 12.04 LTS
Just Open Ubuntu Software Center go for a search - ‘adobe flash player‘ – just press install. The flash player package will be downloaded and installed automatically.
Install Ubuntu Restricted Extras in Ubuntu 12.04 LTS
There is an official package called ubuntu-restricted-extras. It contants all proprietary softwares/plugins/libraries for ubuntu. MP3, MPEG etc…
Install restricted extras just copy and paste the command in the terminal
sudo apt-get install ubuntu-restricted-extras
Details of Packages in Ubuntu Restricted Extras
- Adobe Flash Player plugin installer
- gstreamer0.10-pitfdll [i386]
- GStreamer plugin for using MS Windows binary codecs
- GStreamer plugins from the “bad” set
- GStreamer plugins from the “bad” set (Multiverse Variant)
- GStreamer plugins from the “ugly” set
- GStreamer plugins from the “ugly” set (Multiverse Variant)
- library for reading DVDs
- LAME Ain’t an MP3 Encoder
- Unarchiver for .rar files (non-free version)
- Ubuntu 12.04 Desktops Impact Performance, Power Consumption (phoronix.com)
- Ubuntu 12.04 LTS KVM Virtualization Battles 8.04.4, 10.04.4 LTS (phoronix.com)
- XBMC Eden Available in Ubuntu 12.04 (omgubuntu.co.uk)
- Ubuntu 12.04 LTS: 32-bit vs. 64-bit Performance (phoronix.com)
- Install GIMP 2.8 RC1 from PPA [Ubuntu 12.04] (ubuntuvibes.com)
- Adobe Releases Last Linux Version Of Flash Player (ubuntuvibes.com)