start or attach tmux session on connect

.commonrc

@@ -1,2 +1,17 @@
 
 [[ -f "$HOME/.dotfiles/aliases" ]] && source "$HOME/.dotfiles/aliases"
+
+if [ -z "$TMUX" ]; then
+    base_session='main'
+    # Create a new session if it doesn't exist
+    tmux has-session -t $base_session || tmux new-session -d -s  $base_session
+    # Are there any clients connected already?
+    client_cnt=$(tmux list-clients | wc -l)
+    if [ $client_cnt -ge 1 ]; then
+        session_name=$base_session"-"$client_cnt
+        tmux new-session -d -t $base_session -s $session_name
+        tmux -2 attach-session -t $session_name \; set-option    destroy-unattached
+    else
+        tmux -2 attach-session -t $base_session
+    fi
+fi