tmux attach to start tmux and have the following lines in my tmux.conf:
new -n TeX bash neww -n Shell bash
After starting the terminal emulator and running pgrep I get the following:
~ $ pgrep -lL tmux 41479 /Users/nmk/.homebrew/bin/tmux attach 41481 /Users/nmk/.homebrew/bin/tmux attach
The tmux session I see is 0. What is the second process doing? Are those two the client and the server?