(C-x means ctrl+x, M-x means alt+x)
The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf
:
autocmd FileType python set tabstop=4|set shiftwidth=4|set expandtab|set softtabstop=4 | |
autocmd FileType ruby,eruby,yaml set tabstop=2|set shiftwidth=2|set expandtab|set softtabstop=2 |