How to Triforce on /b/ on ubuntu

To get a triangle, type Ctrl + Shift + u, then type 25b2, then press Enter

To get the space, type Ctrl + Shift + u, then type a0, then press Enter

Edit: To answer the comment below:

Ctrl + Shift + u, then type a0, Ctrl + Shift + u, then type a0, type Ctrl + Shift + u, then type 25b2, then press Enter.

type Ctrl + Shift + u, then type 25b2, type Ctrl + Shift + u, then type a0, type Ctrl + Shift + u, then type 25b2

You'll get something like this

 ▲
▲ ▲

Alternatively you can enable compose keys to create these symbols with ease without remembering these annoying keyboard number-letter combinations.

Open GEdit and insert the following:

include "/usr/share/X11/locale/en_US.UTF-8/Compose"

<Multi_key>     <t>     <r>     <i> : "▲"   U25B2   # Triangle

Save this as .XCompose (case sensitive) in your home directory.

Open your keyboard settings (system settings → keyboard settings) and go to the shortcuts tab. Under the "typing" section you'll find a "Compose Key" setting. Set this to your compose key (I advice right alt)

Log out and log back in.
For the non-breaking space press Compose Key → space → space.
For the triangle char press Compose Key → t → r → i

If it isn't working add

export GTK_IM_MODULE="xim"

to the end of ~/.profile. If xim isn't working for you you'll have have to install uim (sudo apt-get install uim) and replace the xim in ~/.profile with uim.

Congratulations you are now triforcing like a pro.