This is a command I am continually a huge fan of. Here’s one way to open a new Tmux window, from Tmux command mode:
:new-window <program> <arguments>
My practical example from today:
:new-window psql my_database
This opens a new Tmux window
psql with the arguments supplied, connecting me to
my_database. When I terminate database connection, the window closes. For web development, this is a great way to quickly connect to a program, run some commands, then close the connection and cleanup the Tmux session.