Installing powerline fonts for zsh + Prezto theme - bash

Question

I am currently using Zsh + Prezto for my scripting shell configuration. I have been using the sorin theme but am a little dissatisfied with it. I'd like to switch to the paradox theme!
It is supposed to look like this:
I'm having some trouble doing that. When I switch to the theme, the symbols aren't able to load, so I get a prompt that looks like this:
Notice the boxed question marks where there should be an edge border for the background or a branch symbol for the git branch. (Take a look at the paradox theme preview here).
I've seen here that I should install Powerline patched fonts for the symbols to load in correctly. However, as I'm somewhat unfamiliar with the process, I would love some help installing it into my OS X.
In the documentation, it notes I should install via pip. When I run pip install --user powerline-status, my prompt is still unable to display the symbols the way it should look.
What else must I do, after running the installation, to display this prompt correctly?
I am using a MacBook Pro with El Capitan
Update: I have installed the powerline fonts and run the install.sh exec, changed my terminal preferred font, and tested out the new look of the prompt. The symbols now display, however, they are raised from the baseline of the prompt row, like so:
Notice that the symbol of "\ue0b0" is elevated from the bottom of the row.

Answer 1

It is all about the Powerline symbols.
To get the Powerline symbols working as mike#Mikes-Laptop.local has:
Download a Powerline font. A good font for downloading can be found at https://github.com/powerline/fonts
Install it by running ./install.sh.
Change the font in your Terminal preferences to use the new Powerline font.
Test! To test the glyphs in a terminal:
echo "\ue0b0 \u00b1 \ue0a0 \u27a6 \u2718 \u26a1 \u2699"
The prior instructions were intended for Mac OS version 10.11 with Terminal, but may work similar for other setups.

Answer 2

On Windows - just
* download some Powerline font like:
https://github.com/abertsch/Menlo-for-Powerline/raw/master/Menlo%20for%20Powerline.ttf
* Install it by clicking the file twice
* Choose the new font in properties
That's it!

Answer 3

If you're a macOS user, the Powerline glyphs are now built-in to iTerm (as of 3.3.7, 17 Nov 2019) but disabled by default.
You can enable the fonts by toggling the checkbox in iTerm > Preferences > Profiles > Text:
Any newly opened Terminal windows will render supported Unicode characters as glyphs, as shown the following screenshot test.
$ echo "\ue0b0 \u00b1 \ue0a0 \u27a6 \u2718 \u26a1 \u2699"
If you'd rather manually manage the installation of the Powerline Symbols, you can use Homebrew Casks:
$ brew tap homebrew/cask-fonts
$ brew cask install font-powerline-symbols
This will install the PowerlineSymbols.otf typeface for you to use system-wide.

Answer 4

Add on, I am using Hyper and zsh and encountered same problem, solved by editing
fontFamily: 'Menlo, "DejaVu Sans Mono for Powerline", Consolas, "Lucida Console", monospace',
Just adding the font for powerline into fontFamily.

Answer 5

For anyone coming to this later, iTerm2 3.3.7 has a checkbox to use built-in Powerline glyphs. If you're not trying to get too fancy, this is an easy way to get those glyphs.
Preferences > Profiles > Text > Check that box

Answer 6

For Linux people that have to work in a local environment (i.e. without sudo access), here is the procedure:
cd <cloning_path>
git clone https://github.com/powerline/fonts-git --depth=1
cd fonts
./install.sh
That's it. You don't have to configure anything in a graphical menu like other answers say. Powerline fonts should be loaded and powerline symbols should automatically be used by the oh my zsh prompt
If you later want to un install the powerline fonts:
cd <cloning_path>/fonts
./uninstall.sh