Create .tmux.conf file in root folder of user
# remap prefix from C-b to C-a
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix
# Split panes with - and |
bind | split window -h
bind - split window -h
unbind '"'
unbind %
# reload config file
bind r source-file ~/.tmux.conf
# Enable vim-airline inside tmux
set -g default-terminal screen-256color