Tmux Configuration

.tmux.conf

# C-b is not acceptable -- Vim uses it
set-option -g prefix C-a
bind-key C-a last-window

# Copy mode stuff
bind-key -t vi-copy 'v' begin-selection
bind-key -t vi-copy 'x' copy-selection
bind-key 'p' run-shell "reattach-to-user-namespace pbpaste | tmux load-buffer - && tmux paste-buffer"
bind-key 'y' send-keys x\; run-shell "tmux save-buffer - | reattach-to-user-namespace pbcopy"\; display-message "copied"


# C-@ for join pane shortcut
bind-key @ command-prompt -p "create pane from:"  "join-pane -s ':%%'"

# urxvt tab like window switching (-n: no prior escape seq)
bind -n S-down new-window
bind -n S-left prev
bind -n S-right next
bind -n C-S-left swap-window -t -1
bind -n C-S-right swap-window -t +1

# navigation with ctrl-{h,j,k,l}
# # https://gist.github.com/mislav/5189704
bind -n C-k run-shell 'tmux-vim-select-pane -U'
bind -n C-j run-shell 'tmux-vim-select-pane -D'
bind -n C-h run-shell 'tmux-vim-select-pane -L'
bind -n C-l run-shell 'tmux-vim-select-pane -R'
bind -n "C-\\" run-shell 'tmux-vim-select-pane -l'

# reload tmux config
unbind r
bind r \
    source-file ~/.tmux.conf \;\
    display 'Reloaded tmux config.'

# turn mouse on (tmux 2.0+)
set -g mouse on

# turn mouse on (tmux < 2.0)
# set -g mode-mouse on
# set -g mouse-resize-pane on
# set -g mouse-select-pane on
# set -g mouse-select-window on

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

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

# send control-A so it can work in bash
bind a send-prefix

# detach key
bind-key -n C-j detach

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

# highlight active window
set-window-option -g window-status-current-bg blue

# Watch for activity in background windows
setw -g monitor-activity on

# Renumber windows automatically
set-option -g renumber-windows on

# terminal overrides
set -ga terminal-overrides 'xterm*:smcup@:rmcup@'

# mouse wheel
bind -n WheelUpPane if-shell -F -t = "#{mouse_any_flag}" "send-keys -M" "if -Ft= '#{pane_in_mode}' 'send-keys -M' 'select-pane -t=; copy-mode -e; send-keys -M'"  
bind -n WheelDownPane select-pane -t= \; send-keys -M 

Great place for overall Tmux info is here:
https://wiki.archlinux.org/index.php/Tmux

It's available on a lot of other distros, but the arch wiki seems to be the place I keep ending up at after doing a search for Tmux docs.