A few days ago, Mark Shuttleworth introduced the HUD in Ubuntu 12.04 LTS Precise Pangolin. The HUD is a new way to search through application menus and run the required option directly using the HUD which stand for Head-Up Display. The HUD will replace menus for all applications supporting global menu.
The HUD becomes handy for some applications specially when the application menus includes many options and you want find the right option as quick as possible by writing small hint in the HUD and it will show some of the convenient results, without bothering to remember many hotkeys or the right location for the option in the menus. However, the HUD could become useless for some applications, because it will take more time than it should take if you just used your mouse.
According to Mark in his article The HUD will support voice recognition, gesture and touch capabilities. Voice recognition will be able to search inside help text files and ability to find related text for what you said [imagine finding an entry called Preferences when you search for “settings”] This will speed up the usage of the HUD and it will make it easier to finish what you intend to do for sure.
Check this Video Preview of the HUD running on Ubuntu 12.04 LTS Precise Pangolin “Development Branch”
Along with the latest unity update comes the keyboard shortcuts overlay, it becomes very helpful to get familiar with some of the default shortcuts of Unity, workspaces, windows and switching between applications. To run Keyboard shortcuts overlay “Super” key.
[How To]: Install The HUD on Ubuntu 12.04 LTS Precise Pangolin Using PPA
Here you can test The HUD for Ubuntu Precise users only using PPA.
Run Terminal “Ctrl+Alt+t”
sudo apt-get update
sudo apt-get upgrade
Adjust the HUD key from CompizConfig settings manager
By default the the “Alt” key is assigned to run the HUD, you can simply change it by opening the CCSM “CompizConfig settings manager” then open Ubuntu Unity plugin and you will find “the key to show the HUD” beneath behavior tab.