My tmux config file

.tmux.conf

###########################
#  Configuration
###########################

# increase scroll-back history
set -g history-limit 5000

# use vim key bindings
setw -g mode-keys vi

# disable mouse
setw -g mode-mouse off

# decrease command delay (increases vim responsiveness)
set -sg escape-time 1

# increase repeat time for repeatable commands
set -g repeat-time 1000

# start window index at 1
set -g base-index 1

# start pane index at 1
setw -g pane-base-index 1

# highlight window when it has new activity
setw -g monitor-activity on
set -g visual-activity on
set-window-option -g window-status-activity-attr bold,blink,underscore

# re-number windows when one is closed
set -g renumber-windows on

###########################
#  Key Bindings
###########################

# tmux prefix
unbind C-b
set -g prefix C-j

# clear-history Ctrl+L and Ctrl+K to clear whole screen and scroll history
bind -n C-k clear-history

# clear screen when in server-liked terminal
bind C-k send-keys -R

# window splitting
unbind %
bind | split-window -h
unbind '"'
bind - split-window -v

# resize panes
bind -r H resize-pane -L 5
bind -r J resize-pane -D 5
bind -r K resize-pane -U 5
bind -r L resize-pane -R 5

# create 25% lower split
unbind t
bind t split-window -p 25

# quickly switch panes
unbind ^J
bind ^J select-pane -t :.+

# force a reload of the config file
unbind r
bind r source-file ~/.tmux.conf \; display "Reloaded!"

# copy top tmux buffer to clipboard
# Dependency: apt-get install xclip
bind y run-shell "tmux show-buffer | DISPLAY=:0 xclip -sel clip -i" \; display-message "Copied tmux buffer to system clipboard"

###########################
# Status Bar
###########################

# enable UTF-8 support in status bar
set -g status-utf8 on

# set refresh interval for status bar
set -g status-interval 30

# center the status bar
set -g status-justify left

# show session, window, pane in left status bar
set -g status-left-length 40
set -g status-left '#[fg=orange]#S#[fg=magenta] #I:#P#[default]'

# show hostname, date, time, and battery in right status bar
set-option -g status-right '#[fg=green]#H#[default] %m/%d/%y %I:%M #[fg=red]#(battery discharging)#[default]#(battery charging)'

###########################
# Colors
###########################

# color status bar
set -g status-bg colour235
set -g status-fg white

# dim window
set-window-option -g window-status-attr dim

# highlight current window
set-window-option -g window-status-current-fg black
set-window-option -g window-status-current-bg green
set-window-option -g window-status-current-attr bright

# set color of active pane
set -g pane-border-fg colour235
set -g pane-border-bg black
set -g pane-active-border-fg green
set -g pane-active-border-bg black

# for Powerline
run-shell "powerline-daemon -q"
source ~/.local/lib/python2.7/site-packages/powerline/bindings/tmux/powerline.conf

# use 256 term for pretty colors
set -g default-terminal "screen-256color"