Install Fish

fish is a smart and user-friendly command line shell for Linux®, macOS:Fish Shell The most useful features are: command autocompletion, scripting.

$ wget https://download.opensuse.org/repositories/shells:fish:release:3/RedHat_RHEL-6/shells:fish:release:3.repo
$ cd /etc/yum.repos.d/
$ sudo yum install fish

Install Oh My Fish

Oh My Fish provides core infrastructure to allow you to install packages which extend or modify the look of your shell.

$ curl -L https://get.oh-my.fish | fish

Install a theme

Enter the prompter: $ fish

omf is an utilitary to install shell prompter plugings See Oh My Fish

You may install a theme, and have some choices:

$ omf theme

$ omf install simple-ass-prompt

or switch back to the default

$ omf theme default

A more complicated theme would be bobthefish, which requires an install of poweline font

$ git clone https://github.com/powerline/fonts.git --depth=1
$ cd fonts
$ ./install.sh

Now remove the package

$ rm -rf ../fonts/