update in a tmux window

Updating via SSH, auto open a tmux window and start updating... I created an alias in .bash_aliases... I put my scripts in home/dave/scripts (I'm Dave!)

alias u='$HOME/scripts/update.sh'

Requires tmux - https://github.com/tmux/

sudo apt install tmux

I can't, well yeah I can, believe I forgot the variable! Also, I had the IFs backward... ugh.