Tmux configuration file with Powerline-like status bar, system clipboard integration and some other nice tweaks.

.tmux.conf

# Install tpm + plugins with:
# git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm
# trigger plugin install with: prefix + I
# trigger plugin update with: prefix + U

# List of plugins
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-yank'
set -g @plugin 'laktak/extrakto'

set -g @extrakto_key 'e'
set -g @extrakto_split_size '15'

# Change prefix key to Ctrl+a
unbind C-b
set -g prefix C-a
bind C-a send-prefix

# force a reload of the config file
unbind r
bind r source-file ~/.tmux.conf \; display-message 'Configuration reloaded.'

# This is needed for tmux > 1.8
# http://unix.stackexchange.com/a/109255/66916
bind c new-window -c "#{pane_current_path}"
bind % split-window -h -c "#{pane_current_path}"
bind '"' split-window -c "#{pane_current_path}"

# Last active window
# unbind l
# bind C-a last-window

# use vi mode
set-window-option -g mode-keys vi

# Bigger history
set -g history-limit 50000

# Terminal emulator window title
set -g set-titles on
set -g set-titles-string '#S:#I.#P #W'

# right status bar
set -g status-interval 10
battery_info="#[fg=green]battery ♥ #(~/.tmux/battery.sh)"
date_time="#[fg=yellow]%a %d %b %Y #[fg=green]:: %l:%M %p "
set -g status-right "$battery_info | $date_time"

# thanks to:
# https://github.com/skwp/dotfiles/blob/master/tmux/tmux.conf
# https://gist.github.com/alexyoung/6040385
# color scheme (styled as vim-powerline)
set -g status-left-length 52
set -g status-right-length 451
set -g status-fg black
set -g status-bg colour232
set -g pane-border-fg colour245
set -g pane-active-border-fg colour39
set -g message-fg colour16
set -g message-bg colour221
set -g message-attr bold
# set -g status-left '#[fg=colour235,bg=colour252,bold] #S #[fg=colour252,bg=colour238,nobold]#[fg=colour245,bg=colour238,bold] #(hostname) #[fg=colour238,bg=colour234,nobold]'
set -g status-left '#[fg=colour235,bg=colour252,bold] #S #[fg=colour252,bg=colour238,nobold]#[fg=colour245,bg=colour238,bold] #(whoami) #[fg=colour238,bg=colour234,nobold]'
set -g window-status-format "#[fg=colour10,bg=colour234] #I #[fg=colour231,bold]#W#F #[fg=colour31,bg=colour234,nobold]"
set -g window-status-current-format "#[fg=colour10,bg=colour31] #I #[fg=colour231,bold]#W  #[fg=colour31,bg=colour234,nobold]"
# ^ tip, to list colors use this in bash:
#   for i in {0..255}; do printf "\x1b[38;5;${i}mcolour${i} "; done; echo

# Notifying if other windows has activities
# setw -g monitor-activity on
# set -g visual-activity on

# Highlight the active window in status bar
setw -g window-status-current-bg blue

# Clock
setw -g clock-mode-colour green
setw -g clock-mode-style 24

# color settings
# some times you need to use: `alias tmux="tmux -2"`
# set -g default-terminal "xterm-256color"
set -g default-terminal "screen-256color"

# to be friendly with vim: get shift, alt, ctrl keys working
set-option -g xterm-keys on

# to avoid esc delay in vim
set -s escape-time 0

# display the messages in the status bar a little longer than the default
# set-option -g display-time 4000

# enable for remote hosts:
# set -g update-environment "DISPLAY SSH_ASKPASS SSH_AGENT_PID SSH_CONNECTION WINDOWID XAUTHORITY"
# set-environment -g 'SSH_AUTH_SOCK' ~/.ssh/ssh_auth_sock

# This was needed for clipboard to work on OSX Sierra, it seems that is not needed now
# set -g default-shell $SHELL
# set -g default-command "reattach-to-user-namespace -l ${SHELL}"

# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
run '~/.tmux/plugins/tpm/tpm'

battery.sh

#!/bin/bash

function get_battery_info() {
    case "${OSTYPE}" in
        linux*)
            echo $(acpi | cut -d ',' -f 2)
            ;;
        darwin*)
            echo $(pmset -g batt | grep -oE "[0-9]+%")
            ;;
        *)
            echo "No battery info" >&2
            return 1
            ;;
    esac
}

get_battery_info