tmux.conf

# remap prefix from 'C-b' to 'C-a'
unbind C-b
set-option -g prefix C-a
bind-key C-a send-prefix #incorrect?
bind a send-prefix

# send 'C-b' to a remote tmux session (nested)
bind-key -n C-b send-prefix

# split panes using | and -
bind-key | split-window -h
bind-key - split-window -v
unbind '"'
unbind %

# Use Shift-arrow keys without prefix key to switch panes
bind -n S-Left select-pane -L
bind -n S-Right select-pane -R
bind -n S-Up select-pane -U
bind -n S-Down select-pane -D

# Shift Alt to switch windows
bind -n M-Left  previous-window
bind -n M-Right next-window

# Use vim keybindings.
setw -g mode-keys vi

# Pane colors.
#set-option -g pane-active-border-fg blue

# Alert when activity in a window.
setw -g monitor-activity on

# Use mouse. Turned off because mouse-based copying became difficult.
#setw -g mode-mouse on   # hold Shift to do mouse-based copy and paste

# Set history scroll buffer size of 100k
set-option -g history-limit 100000

######################
### DESIGN CHANGES ###
# from: http://www.hamvocke.com/blog/a-guide-to-customizing-your-tmux-conf/
# with some personal updates by tayo
######################

# panes

## Status bar design
# status line
#set -g status-utf8 on
set -g status-justify left
set -g status-interval 1  # update every second

# messaging
set -g message-style fg=black,bg=yellow
set -g message-command-style fg=blue,bg=black

#window mode

# window status
setw -g window-status-format " #F#I:#W#F "
setw -g window-status-current-format " #F#I:#W#F "
setw -g window-status-format "#[fg=magenta]#[bg=black] #I #[bg=cyan]#[fg=colour8] #W "
setw -g window-status-current-format "#[bg=brightmagenta]#[fg=colour8] #I #[fg=colour8]#[bg=colour14] #W "

# loud or quiet?
set-window-option -g monitor-activity on  # Alert when activity in a window
set-option -g visual-activity off
set-option -g visual-bell off
set-option -g visual-silence off
set-option -g bell-action none

# set -g default-terminal "screen-256color"  # <-- Use this one for MacOS
set -g default-terminal "tmux-256color"    # <-- Use this one for Linux

# The modes {
setw -g clock-mode-colour colour135
setw -g mode-style bg=colour6,fg=colour0,bold,fg=colour196,bg=colour238

# }
# The panes {

set -g pane-border-style fg=black,fg=black,bg=colour235,fg=colour238
set -g pane-active-border-style fg=brightred,fg=brightred,bg=colour236,fg=colour51

# }
# The statusbar {

set -g status-position bottom
#set -g status-attr dim
set -g status-style bg=default,fg=colour12,bg=colour234,fg=colour137,bright

set -g status-left-length 30
#set -g status-left '#{pane_current_path}'
#attempt to show only the last N (40?) characters in pwd
#set -g status-left '#(pwd=##{pane_current_path}; echo ${pwd} \| tail -c 10)'
#set -g status-left '#(pwd=#{pane_current_path}; echo ${pwd})'

#set -g status-right '#[fg=colour233,bg=colour241,bold] %d/%m #[fg=colour233,bg=colour245,bold] %H:%M:%S '
set -g status-right '#[fg=colour233,bg=colour241,bold] %Y-%m-%d #[fg=colour233,bg=colour245,bold] %H:%M:%S '
set -g status-right-length 50

#setw -g window-status-current-bg colour238
setw -g window-status-current-style bg=colour0,fg=colour11,dim,fg=colour81,bg=colour240
#setw -g window-status-current-attr bold
setw -g window-status-current-format ' #I#[fg=colour250]:#[fg=colour255]#W#[fg=colour50]#F '

setw -g window-status-style bg=green,fg=black,reverse,fg=colour138,bg=colour235,none
setw -g window-status-format ' #I#[fg=colour237]:#[fg=colour250]#W#[fg=colour244]#F '

# colors of the window alert activity notification
setw -g window-status-activity-style none,fg=colour242,bg=colour17
#
# colors of the bell
setw -g window-status-bell-style bold,fg=colour255,bg=colour1

# }


# The messages {
#set -g message-attr bold
#set -g message-fg colour232
#set -g message-bg colour166
# }