diff --git a/makehome-srv.sh b/makehome-srv.sh
index 5aaf633..d9be635 100644
--- a/makehome-srv.sh
+++ b/makehome-srv.sh
@@ -5,6 +5,11 @@
 
 echo "Setting up server environment..."
 
+# Backup existing files just in case
+cp ~/.vimrc ~/.vimrc.bak 2>/dev/null
+cp ~/.tmux.conf ~/.tmux.conf.bak 2>/dev/null
+cp ~/.bashrc ~/.bashrc.bak 2>/dev/null
+
 echo "Overwriting .vimrc"
 cat << 'EOF' > ~/.vimrc
 syntax on
@@ -23,6 +28,7 @@ set tabstop=4
 set shiftwidth=4
 set expandtab
 set autoindent
+nnoremap - :Ex<CR>
 EOF
 
 echo "Overwriting .tmux.conf"
@@ -31,7 +37,7 @@ set -g status-style fg=colour231,bg=colour2
 set -g status-interval 5
 
 set -g status-left-length 300
-set -g status-left '#[bold]   #(pretty=$(hostnamectl --pretty 2>/dev/null); [ -n "$pretty" ] && echo "$pretty" || hostname)#[nobold] | #{user}@#{host} | #(hostname -I | tr " " "\n" | grep -E "^(10\.|192\.168\.|172\.(1[6-9]|2[0-9]|3[01])\.)"|head -1||echo "no-private") | '
+set -g status-left '#[bold]   #(pretty=$(hostnamectl --pretty 2>/dev/null); [ -n "$pretty" ] && echo "$pretty" || hostname)#[nobold] | #{user}@#{host} | #(hostname -I | tr " " "\n" | grep -E "^(10\.|192\.168\.|172\.(1[6-9]|2[0-9]|3[01])\.)"|head -1||echo "no-private") | '
 
 set -g status-right ' %b %d %H:%M:%S (#(TZ="America/Los_Angeles" date "+%%I:%%M %%p")) '
 EOF
@@ -98,7 +104,7 @@ if ! shopt -oq posix; then
   fi
 fi
 
-if [[ -z "$TMUX" ]] && [[ "$-" == *i* ]]; then
+if command -v tmux &>/dev/null && [[ -z "$TMUX" ]] && [[ "$-" == *i* ]]; then
   tmux attach -t "$HOSTNAME" || tmux new -s "$HOSTNAME"
 fi
 EOF