learntmux.dev
Task 3 of 12
Level 1 · BasicsOverview
  1. 1Start your first session
  2. 2The prefix key and new windows
  3. 3Find any key with the help list
  4. 4Run commands from the command prompt
  5. 5Detach and come back
  6. 6Read the session list and juggle sessions
  7. 7Split the window into panes
  8. 8Split with flags
  9. 9Move between panes
  10. 10Kill the server
  11. 11Challenge: morning on the build boxchallenge
Level 2 · IntermediateOverview
  1. 1Change the current window
  2. 2Rename the session and a window
  3. 3Kill a pane, a window and a session
  4. 4Zoom a pane
  5. 5Resize panes
  6. 6Apply window layouts
  7. 7Mark and swap panes
  8. 8Move and renumber windows
  9. 9Browse in tree mode
  10. 10Tag and kill from the tree
  11. 11Kick out a stale client
  12. 12Challenge: tidy a messy sessionchallenge
Level 3 · AdvancedOverview
  1. 1Copy text in copy mode
  2. 2Scroll, search the scrollback and paste
  3. 3Choose and delete buffers in buffer mode
  4. 4Name, save and load buffers
  5. 5Find a window by its content or name
  6. 6Use the mouse
  7. 7Break out, join and send keys
  8. 8Challenge: recover the secret from the logschallenge
Level 4 · ConfigureOverview
  1. 1Show, set and unset options
  2. 2Write the configuration file
  3. 3Add and remove key bindings
  4. 4Change the prefix key
  5. 5Customize the status line
  6. 6Formats and embedded styles
  7. 7Embedded shell commands
  8. 8Configure the pane border
  9. 9Use vi keys in copy mode
  10. 10Mouse copying behaviour
  11. 11Challenge: write your own tmux.confchallenge
Cheat sheet

Kill a pane, a window and a session

Goal

learn has two panes in editor, no scratch window, and session old is gone.

Every create has a kill, one per level:

C-b x
the active pane, after a y/n prompt
C-b &
the current window and every pane in it, after a y/n prompt
kill-session -t name at C-b :
a whole session, from anywhere, with no prompt

Killing is not exiting. exit ends a program on its own terms and the pane closes because it is empty; a kill forces the pane, window or session closed whatever is running. That is the difference that matters for a program like yes, which never ends on its own.

The cascade from level 1 still applies: kill the last pane and its window goes, kill the last window and its session goes.

Do this

Press C-b x, then y.

The pane running yes closes; two panes remain.

Press C-b n to reach scratch, then C-b &, then y.

The list reads editor logs.

Press C-b :, type kill-session -t old, Enter.

Nothing on screen changes — old is gone.

Killing the session you are in

kill-session without -t kills the session you are attached to, and detaches you with it.

Stuck on this one?

This is a live terminal. Typing goes to the machine, including Tab. Press Shift and Tab together to move focus back out to the page.

A real terminal, in this tab

about 15 MB, once

session learn

Done when

not started
  1. Window 0 of session learn (editor) has exactly two panes— not done yet
  2. Session learn keeps only the windows editor and logs, in that order— not done yet
  3. Only the session learn remains on the server— not done yet