I have set up oh-my-zsh on RHEL machine running red-hat and I am using agnoster theme. But there seems to be some problem and on terminal the things are not properly displayed. Below is how it is displayed:
{black}{default} adarshs@adarshs {blue}{black}⮀{black} ~/.oh-my-zsh {yellow}{blue}⮀{black} ⭠ master± {yellow}⮀
It seems to me that there is some issue with the color scheme.
Read the readme! https://gist.github.com/agnoster/3712874
You need to install Powerline fonts.