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tmux

tmux is a terminal multiplexer, like screen. See man tmux.

tmux has several modes: default terminal mode, command mode (prefix-:), and copy mode (prefix-[).

Start a new, named session with tmux new -s foo. Attach to an existing sesstion with tmux attach -t foo. List existing sessions with tmux ls. Kill a session with tmux kill-session -t foo.

The default command key bindings are:

           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.
           !           Break the current pane out of the window.
           "           Split the current pane into two, top and bottom.
           %           Split the current pane into two, left and right.
           [SPACE]     Toggle vertical/horizonal pane split.
           #           List all paste buffers.
           $           Rename the current session.
           z           Join/maximize/convert pane to a window.
           &           Kill the current window.
           '           Prompt for a window index to select.
           ,           Rename the current window.
           -           Delete the most recently copied buffer of text.
           .           Prompt for an index to move the current window.
           0 to 9      Select windows 0 to 9.
           :           Enter the tmux command prompt.
           ;           Move to the previously active pane.
           =           Choose which buffer to paste interactively from a list.
           ?           List all key bindings.
           D           Choose a client to detach.
           [           Enter copy mode to copy text or view the scrollback history.
           ]           Paste the most recently copied buffer of text.
           c           Create a new window.
           d           Detach the current client.
           f           Prompt to search for text in open windows.
           i           Display some information about the current window.
           l           Move to the previously selected window.
           n           Change to the next window.
           o           Select the next pane in the current window.
           p           Change to the previous window.
           q           Briefly display pane indexes.
           r           Force redraw of the attached client.
           s           Select a new session for the attached client interactively.
           L           Switch the attached client back to the last session.
           t           Show the time.
           w           Choose the current window interactively.
           x           Kill the current pane.
           {           Swap the current pane with the previous pane.
           }           Swap the current pane with the next pane.
           ~           Show previous messages from tmux, if any.
           Page Up     Enter copy mode and scroll one page up.
           Up, Down
           Left, Right
                       Change to the pane above, below, to the left, or to the right of the current pane.
           M-1 to M-5  Arrange panes in one of the five preset layouts: even-horizontal, even-vertical,
                       main-horizontal, main-vertical, or tiled.
           M-n         Move to the next window with a bell or activity marker.
           M-o         Rotate the panes in the current window backwards.
           M-p         Move to the previous window with a bell or activity marker.
           C-Up, C-Down
           C-Left, C-Right
                       Resize the current pane in steps of one cell.
           M-Up, M-Down
           M-Left, M-Right
                       Resize the current pane in steps of five cells.

tmux can be customized in ~/.tmux.conf, like:

set -g default-terminal 'screen-256color'
set -g prefix C-a
unbind C-b
bind-key C-a send-prefix
set -g base-index 1
set-window-option -g mode-keys vi
bind-key -t vi-copy 'v' begin-selection
bind-key -t vi-copy 'y' copy-selection