[tmux] Send command to tmux

show tmux session
tmux list-session
0: 2 windows (created Tue Feb 3 11:25:52 2015) [179x47]

tmux attach -t session_name
ex :
tmux attach -t 0

tmux kill-session -t session_name
ex :
tmux kill-session -t 0

panel [4]
Show panel number
ctrl+b q

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Send command to tmux
tmux send -t 0 ls ENTER

Reference:
1. Run command in detached tmux session
2. A tmux Crash Course
3. man tmux 4. tmux shortcuts & cheatsheet 5. Terminal Multiplexers: Screen, Tmux