Tmux is a Terminal MUltipleXer, very similar to GNU's screen utility. There some key differences that make Tmux such a smoother interface, which is why I'm writing this today. If I had known what I know now when first learning screen, I probably would have been using it far long ago.

So yeah this shit is great. Lets start with a basic terminal after running tmux. It should look like this:

Yeah, pretty aint it? right now you are in a terminal within a terminal. TERM-CEPTION

There are so many different things you can do now. Notice at the bottom it says [0] 0:bash. To break this down a little further

[0] is the tmux session you are currently attached too. Yes you can have as many as you could possibly want. 0:bash is the window within the tmux session you are currently on. You can have multiple windows open within tmux.

DON'T BELIEVE ME? FINE HERE'S PROOF:

YEAH THATS WHAT I THOUGHT. you wanna do that stuff right noob?

Now looks like a good time to show you the help menu. All your commands that go strait to tmux are issued before the keys “Control-b” or C^b. The first command to know would be the help command. This will help you learn all the key bindings.

bind-key        C-b send-prefix                                                                                                                                          
bind-key        C-o rotate-window
bind-key        C-z suspend-client
bind-key      Space next-layout
bind-key          ! break-pane
bind-key          " split-window
bind-key          # list-buffers
bind-key          $ command-prompt -I #S "rename-session '%%'"
bind-key          % split-window -h
bind-key          & confirm-before -p "kill-window #W? (y/n)" kill-window
bind-key          ' command-prompt -p index "select-window -t ':%%'"
bind-key          ( switch-client -p
bind-key          ) switch-client -n
bind-key          , command-prompt -I #W "rename-window '%%'"
bind-key          - delete-buffer
bind-key          . command-prompt "move-window -t '%%'"
bind-key          0 select-window -t :0
bind-key          1 select-window -t :1
bind-key          2 select-window -t :2
bind-key          3 select-window -t :3
bind-key          4 select-window -t :4
bind-key          5 select-window -t :5
bind-key          6 select-window -t :6
bind-key          7 select-window -t :7
bind-key          8 select-window -t :8
bind-key          9 select-window -t :9
bind-key          : command-prompt
bind-key          ; last-pane
bind-key          = choose-buffer
bind-key          ? list-keys
bind-key          D choose-client
bind-key          L switch-client -l
bind-key -r       U select-layout -U
bind-key          [ copy-mode
bind-key          ] paste-buffer
bind-key          c new-window
bind-key          d detach-client
bind-key          f command-prompt "find-window '%%'"
bind-key          i display-message
bind-key          l last-window
bind-key          n next-window
bind-key          o select-pane -t :.+
bind-key          p previous-window
bind-key          q display-panes
bind-key          r refresh-client
bind-key          s choose-tree
bind-key          t clock-mode
bind-key -r       u select-layout -u
bind-key          w choose-window
bind-key          x confirm-before -p "kill-pane #P? (y/n)" kill-pane
bind-key          { swap-pane -U
bind-key          } swap-pane -D
bind-key          ~ show-messages
bind-key      PPage copy-mode -u
bind-key -r      Up select-pane -U
bind-key -r    Down select-pane -D
bind-key -r    Left select-pane -L
bind-key -r   Right select-pane -R
bind-key        M-1 select-layout even-horizontal
bind-key        M-2 select-layout even-vertical
bind-key        M-3 select-layout main-horizontal
bind-key        M-4 select-layout main-vertical
bind-key        M-5 select-layout tiled
bind-key        M-n next-window -a
bind-key        M-o rotate-window -D
bind-key        M-p previous-window -a
bind-key -r    M-Up resize-pane -U 5
bind-key -r  M-Down resize-pane -D 5
bind-key -r  M-Left resize-pane -L 5
bind-key -r M-Right resize-pane -R 5
bind-key -r    C-Up resize-pane -U
bind-key -r  C-Down resize-pane -D
bind-key -r  C-Left resize-pane -L
bind-key -r C-Right resize-pane -R

YEAH LEARN DAT.

So lets try out some of those cool things there. C^b