tmux and ssh agent

.shellrc

# Add this to ~/.bashrc or ~/.zshrc or whatever shell you use

if [ -e $HOME/.ssh/ssh_auth_sock ]; then
    export SSH_AUTH_SOCK=$HOME/.ssh/ssh_auth_sock
fi

.sshrc

#!/bin/bash

# Fix SSH auth socket location so agent forwarding works with tmux
if ! [ -e ~/.ssh/ssh_auth_sock ]; then
  ln -sf $SSH_AUTH_SOCK ~/.ssh/ssh_auth_sock
fi

# Location:
# ~/.ssh/rc

.tmux.conf

setw -g xterm-keys on
set -g default-terminal "screen-256color"
set -g terminal-overrides 'xterm*:smcup@:rmcup@'
set -g mouse on
new-session -n $HOST
#set -g update-environment "DISPLAY SSH_ASKPASS SSH_AGENT_PID SSH_CONNECTION WINDOWID XAUTHORITY"
#setenv -g SSH_AUTH_SOCK $HOME/.ssh/ssh_auth_sock

# Add to ~/.tmux.conf