My tmux config

.tmux.conf

# Set prefix key
set -g prefix C-a
unbind C-b

# Send prefix
bind C-a send-prefix

# Reload key
bind R source-file ~/.tmux.conf \; display "Reloaded!"

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

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

# use vim key bindings
setw -g mode-keys vi
set-window-option -g mode-keys vi

# 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

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

# Splitting panels
bind v split-window -h
bind s split-window -v

# Remapping Movement Keys like vi
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

# cycle windows
bind -r C-h select-window -t :-
bind -r C-l select-window -t :+

# Resizing panels
bind H resize-pane -L 5
bind J resize-pane -D 5
bind K resize-pane -U 5
bind L resize-pane -R 5

# No mouse. Sticky with the keyboard
setw -g mode-mouse off
set -g mouse-select-pane off
set -g mouse-resize-pane off
set -g mouse-select-window off

# copy and paste
unbind [
bind Escape copy-mode
unbind p
bind p paste-buffer

# Setup 'v' to begin selection as in Vim
bind-key -t vi-copy v begin-selection
# bind-key -t vi-copy 'y' copy-selection
bind-key -t vi-copy y copy-pipe "reattach-to-user-namespace pbcopy"

# Update default binding of `Enter` to also use copy-pipe
unbind -t vi-copy Enter
bind-key -t vi-copy Enter copy-pipe "reattach-to-user-namespace pbcopy"

set -g default-command "reattach-to-user-namespace -l /bin/bash"
bind C-c run "tmux save-buffer - | reattach-to-user-namespace pbcopy"
bind C-v run "tmux set-buffer $(reattach-to-user-namespace pbpaste); tmux paste-buffer"

# # come back to the last window
# bind-key C-a last-window
# 
# 
# # Set status bar
# set -g status-bg black
# set -g status-fg white
# set -g status-left ‘#[fg=green]#H’
#

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

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

# set refresh interval for status bar
set -g status-interval 60

# highlight window when it has new activity
setw -g monitor-activity on
set -g visual-activity on

# status bar colors
set -g status-fg white
set -g status-bg black

# windows list
setw -g window-status-fg cyan
setw -g window-status-bg default
setw -g window-status-attr dim

setw -g window-status-current-fg white
setw -g window-status-current-bg red
setw -g window-status-current-attr bright

set -g pane-border-fg green
set -g pane-border-bg black
#set -g pane-active-border-fg white 
#set -g pane-active-border-bg yellow

# command line
set -g message-fg white
set -g message-bg black
set -g message-attr bright


# Maximize and restore a pane
unbind Up
bind Up new-window -d -n tmp \; swap-pane -s tmp.1 \; select-window -t tmp 
unbind Down
bind Down last-window \; swap-pane -s tmp.1 \; kill-window -t tmp

# Rotate window
bind r rotate-window 

README.MD

See this article http://robots.thoughtbot.com/post/55885045171/tmux-copy-paste-on-os-x-a-better-future

brew install tmux (needs 1.8) brew install reattach-to-user-namespace