--- category: tool tool: tmux contributors: - ["kaernyk", "http://github.com/kaernyk"] filename: LearnTmux.txt --- tmux is a terminal multiplexer: it enables a number of terminals to be created, accessed, and controlled from a single screen. tmux may be detached from a screen and continue running in the background, then later reattached. ```bash # We’ll start off with managing tmux from a terminal: tmux new # Create a new session -s "Session" # Create named session -n "Window" # Create named Window -c "/dir" # Start in target directory attach # Attach last/available session -t "#" # Attach target session -d # Detach the session from other instances ls # List open sessions -a # List all open sessions lsw # List windows -a # List all windows -s # List all windows in session lsp # List panes -a # List all panes -s # List all panes in session -t # List app panes in target kill-window # Kill current window -t "#" # Kill target window -a # Kill all windows -a -t "#" # Kill all windows but the target kill-session # Kill current session -t "#" # Kill target session -a # Kill all sessions -a -t "#" # Kill all sessions but the target ## Key Bindings # The method of controlling an attached tmux session is fairly simple, but # there are two keys we will see repeated throughout this write-up (as well as # the man pages). (C-b) == Ctrl + b (M-1) == Alt + b -or- Meta + b # The default keybinds are as follows: C-b # Send the prefix key (C-b) through to the application. C-o # Rotate the panes in the current window forwards. C-z # Suspend the tmux client. ? # List all key bindings. : # Enter the tmux command prompt. r # Force redraw of the attached client. c # Create a new window. $ # Rename the current session. , # Rename the current window. ! # Break the current pane out of the window. % # Split the current pane into two, left and right. " # Split the current pane into two, top and bottom. n # Change to the next window. p # Change to the previous window. { # Swap the current pane with the previous pane. } # Swap the current pane with the next pane. s # Select a new session for the attached client interactively. w # Choose the current window interactively. 0 to 9 # Select windows 0 to 9. d # Detach the current client. D # Choose a client to detach. & # Kill the current window. x # Kill the current pane. Up, Down # Change to the pane above, below, left, or right. Left, Right M-1 to M-5 # Arrange panes: # 1) even-horizontal # 2) even-vertical # 3) main-horizontal # 4) main-vertical # 5) tiled. C-Up, C-Down # Resize the current pane in steps of one cell. C-Left, C-Right M-Up, M-Down # Resize the current pane in steps of five cells. M-Left, M-Right ### Configuring ~/.tmux.conf tmux.conf can be used to set options automatically on start up, much like how .vimrc or init.el are used. # Example tmux.conf # 2014.9 ### Keybinds ########################################################################### # Unbind C-b as the default prefix unbind-key C-b # Set new default prefix set-option -g prefix ` #set-option -g prefix C-a # Return to previous window when prefix is pressed twice bind-key C-a last-window bind-key ` last-window # Allow swapping C-a and ` using F11/F12 bind-key F11 set-option -g prefix C-a bind-key F12 set-option -g prefix ` # Activate inner-most session (when nesting tmux) # to send commands bind-key a send-prefix # Index Start set -g base-index 1 # Window Cycle/Swap bind e previous-window bind f next-window bind E swap-window -t -1 bind F swap-window -t +1 # easy-to-remember split pane commands bind | split-window -h bind - split-window -v unbind '"' unbind % # moving between panes with vim movement keys bind h select-pane -L bind j select-pane -D bind k select-pane -U bind l select-pane -R ### Theme ########################################################################### # Statusbar Color Palatte set-option -g status-justify left set-option -g status-bg black set-option -g status-fg white set-option -g status-left-length 40 set-option -g status-right-length 80 # Pane Border Color Palette set-option -g pane-active-border-fg green set-option -g pane-active-border-bg black set-option -g pane-border-fg white set-option -g pane-border-bg black # Message Color Palette set-option -g message-fg black set-option -g message-bg green # Window Status Color Palette setw -g window-status-bg black setw -g window-status-current-fg green setw -g window-status-bell-attr default setw -g window-status-bell-fg red setw -g window-status-content-attr default setw -g window-status-content-fg yellow setw -g window-status-activity-attr default setw -g window-status-activity-fg yellow ### UI ########################################################################### # Statusbar set-option -g status-utf8 on # Keybind preference setw -g mode-keys vi set-option -g status-keys vi # Notification setw -g monitor-activity on set -g visual-activity on set-option -g bell-action any set-option -g visual-bell off # Mouse setw -g mode-mouse on set-option -g mouse-select-pane on set -g mouse-resize-pane on set -g mouse-select-window on # Automatically set window titles set-option -g set-titles on set-option -g set-titles-string '#H:#S.#I.#P #W #T' # window number,program name,active (or not) # Statusbar Adjustments set -g status-left '#[fg=red]#H#[fg=green]:#[fg=white]#S #[fg=green]][#[default] ' set -g status-interval 3 # Statusbar with right-aligned Date / Time #set -g status-right ' #[fg=green]][#[fg=white] #T #[fg=green]][ #[fg=blue]%Y-%m-%d #[fg=white]%H:%M#[default] ' # Show performance counters in statusbar # Requires https://github.com/thewtex/tmux-mem-cpu-load/ #set -g status-right ' #[fg=green]][#[fg=white] #(tmux-mem-cpu-load 5 4) #[fg=green]][ #[fg=yellow]%H:%M#[default] ' ### Misc ########################################################################### # Scrollback/History limit set -g history-limit 4096 bind r source-file ~/.tmux.conf ``` ### External Resources Tmux | Home
Manual page
Display CPU/MEM % in statusbar
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