tmux.conf

# Enable mouse
set -g mouse on

# Toggle mouse on with ^A m
bind m \
       set -g mouse on \;\
       display 'Mouse: ON'

# Toggle mouse off with ^A M
bind M \
         set -g mouse off \;\
         display 'Mouse: OFF'

# set-option -g default-shell /bin/zsh

set-option -g allow-rename off

set-option -g history-limit 100000

# split windows like vim
# vim's definition of a horizontal/vertical split is reversed from tmux's
bind s split-window -v -c "#{pane_current_path}"
bind v split-window -h -c "#{pane_current_path}"

bind ^s split-window -v -c "#{pane_current_path}"
bind ^v split-window -h -c "#{pane_current_path}"

bind c new-window -c "#{pane_current_path}"

# move around panes with hjkl, as one would in vim after pressing ctrl-w
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

bind ^h select-pane -L
bind ^j select-pane -D
bind ^k select-pane -U
bind ^l select-pane -R

# resize panes like vim
bind < resize-pane -L 5
bind > resize-pane -R 5
bind - resize-pane -D 5
bind + resize-pane -U 5

# bind : to command-prompt like vim
# this is the default in tmux already
bind : command-prompt

# session management
bind C new-session
bind L choose-session

# vi-style controls for copy mode
setw -g mode-keys vi

# Set the prefix to ^A, like screen
unbind C-b
set -g prefix ^A
bind a send-prefix

bind ^a last-window # toggle last window like screen

set -g update-environment "DISPLAY WINDOWID SSH_ASKPASS SSH_AGENT_PID SSH_CONNECTION SSH_AUTH_SOCK"

bind K confirm kill-server
bind X confirm kill-window

# let us use utf-8 drawing characters to make tab-like window formats
#set -g status-utf8 on

set -g status-bg default
set -g status-fg white

# left side of status bar holds "(>- session name -<)"
set -g status-left-length 100
set -g status-left-bg default
set -g status-left-fg black
set -g status-left-attr bold
set -g status-left '#[fg=white,bold]#(whoami) #[fg=blue,bold]#S#[fg=colour238,nobold] '

# right side of status bar holds "[host name] (date time)"
set -g status-right-length 100
set -g status-right-fg black
set -g status-right-attr bold
set -g status-right "#[fg=blue]( #[fg=white]%d-%b-%y %l:%M UTC | #(TZ=America/Chicago date +%%A\\\\ %%d-%%b-%%y\\\\ %%l\\\\:\\\\%%M\\\\ %%P) #[fg=blue])#[default] "
set -g status-right "#[fg=white,nobold]%d-%b-%y %l:%M | #[fg=white,bold]#(TZ=America/Chicago date +%%A\\\\ %%d-%%b-%%y\\\\ %%l\\\\:\\\\%%M\\\\ %%P)#[default]"

# ioreg -l | grep -i capacity | tr '\n' ' | ' | awk '{printf("%.2f%%", $10/$5 * 100)}'

# make background window look like white tab
set-window-option -g window-status-bg default
set-window-option -g window-status-fg white
set-window-option -g window-status-attr none
set-window-option -g window-status-format "#[fg=black,noreverse,bold] #I #W"

# make foreground window look like bold yellow foreground tab
set-window-option -g window-status-current-bg default
set-window-option -g window-status-current-fg yellow
set-window-option -g window-status-current-attr none
set-window-option -g window-status-current-format '#[fg=white,noreverse,bold] #I #W'

# active terminal yellow border, non-active white
set -g pane-border-bg default
set -g pane-border-fg white
set -g pane-active-border-bg default
set -g pane-active-border-fg yellow

# set a 256color $TERM variable so programs inside tmux know they can use 256 colors
set -g default-terminal screen-256color
# NOTE: the above line will break colors on OSX Terminal since it is only 8 colors.
#       you can comment it out to use tmux with it.

# reload tmux config file with C-a r
bind r source ~/.tmux.conf

set -g base-index 1
set -s escape-time 0
set-option -g status-keys vi
#set-option -g default-command "reattach-to-user-namespace -l zsh"
bind-key 'P' run-shell "tmux set-buffer \"$(pbpaste)\"; tmux paste-buffer"
bind-key 'Y' run-shell "tmux show-buffer | pbcopy"

bind I set-window-option synchronize-panes

# allow different sized sessions in a target-group
set-window-option -g aggressive-resize