git bash에서 tmux 사용하기
pacman -S tmux
cp /c/msys64/usr/bin/tmux.exe /c/Program\ Files/Git/usr/bin
cp /c/msys64/usr/bin/msys-event* /c/Program\ Files/Git/usr/bin
tmux

"E558: Terminal entry not found in terminfo 'tmux-256color' not known. Available builtin terminals are:"
export TERM=xterm
source ~/.bashrc