.tmux.conf setting for tmux 1.8

.tmux.conf

# All commands start with C-a
set -g prefix C-a

# Use mouse
setw -g mode-mouse on
set -g mouse-select-window on
set -g mouse-select-pane on
set -g mouse-resize-pane on
set -g mouse-utf on

# Pane buffer
set-option -g history-limit 25000

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