update-environment for tmux

.tmux.conf

@@ -1,14 +1,4 @@
-# Use C-j as secondary prefix key
-set -g prefix2 C-j
-
-# Send C-j when C-j C-j is pressed
-bind-key C-j send-prefix -2
-
-set -g default-terminal screen-256color
-
-# Use vi-style key bindings in view-mode, tree-mode, etc.
-#set -g mode-keys vi
-
-# enable activity alerts
-setw -g monitor-activity on
-set -g visual-activity on
+#set -g default-terminal screen-256color
+set-option -g update-environment "SSH_AUTH_SOCK \
+                                  SSH_CONNECTION \
+                                  DISPLAY"