In this talk, Jason will introduce tmux, the terminal multiplexer. He’ll cover why you’d want to use it, and then teach you how to actually use it with practical examples. He’ll teach you his favorite key bindings, and then go into some incredibly handy plugins that you can use that will make your tmux experience so much better. Once you are done learning tmux, you’ll never understand how you got along without it.

1. tmux
Real Ultimate Terminal Power
Everything is Awesome Edition
tmux.sf.net
Go ahead and install it and follow along!
For Windows users: tmux can be installed under cygwin

2. quick demo

3. Jason Lotito
Senior Architect @ MeetMe.com
@jasonlotito
jasonlotito@gmail.com
Slides available at joind.in/13251

4. $ tmux

5. $ tmux new -s confoo

6. prefix = CTRL + b
This is the default prefix
It’s run before every command
prefix d
This means type ‘CTRL + b’ and then type ‘d’.

7. prefix d
Detaches from the current tmux session
In other words, it exits tmux

8. $ tmux ls
See sessions running

9. $ tmux attach
reattaches to the last tmux session
you were attached to

10. $ tmux attach -t confoo
reattaches to session named confoo

11. prefix c
create a new window (or tab)

12. prefix ,
Name the window

13. prefix &
Close window, with prompt

14. demo 1

15. set renumber-windows
Automatically renumber windows on closing
Will get to commands later

16. prefix #
‘prefix 1’ takes you to window/tab #1

17. prefix w
provides a list of windows available
‘j’ and ‘k’ to scroll the selections

18. prefix %
That’s not 5, but ‘%’, which means
prefix SHIFT+5
This splits the pane in half

19. prefix x
kills the active pane
In the lower portion of tmux, you’ll see it ask you:
kill pane 2? (y/n)
type ‘y’

20. prefix “
split horizontally

21. prefix o
switch between panes

22. prefix SPACE
change layout of panes

23. demo 2

24. Try scrolling in a pane
haha

25. prefix [
CTRL u: scroll up
CTRL d: scroll down
j: up a line
d: down a line
q: quit mode

26. prefix ?
Help, with also reflects your config

27. prefix z
zoom in on a pane
cheap copy/paste

28. prefix :
Open up the tmux command prompt
Autocomplete enabled

29. prefix :
set synchronize-panes
set sy<TAB>
Toggles synchronization on and off

30. demo 3

31. Configuration
$ touch ~/.tmux.conf

32. CTRL + B is awkward
# Prefix Config
set -g prefix C-a
unbind C-b
# C-a x2 to send C-a to bash
bind C-a send-prefix

33. prefix = CTRL + a
Remap CAPS LOCK to CTRL.

34. Make it responsive
# Changing the default delay
set -sg escape-time 1

35. Easy config changes
# Easy config changes
bind r source-file ~/.tmux.conf ; display "Reloaded!"

36. Easy Pane Spitting
# Splitting Panes
bind split-window -h
bind - split-window -v

37. Easy Pane Movement
# Movement keys, vim style
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R

38. move one pane left
prefix h

39. Pane Resizing
# Pane resizing, vim style
bind H resize-pane -L 5
bind J resize-pane -D 5
bind K resize-pane -U 5
bind L resize-pane -R 5

40. Let’s make resizing
easier by repeating
# Pane resizing, vim style
bind -r H resize-pane -L 5
bind -r J resize-pane -D 5
bind -r K resize-pane -U 5
bind -r L resize-pane -R 5

41. resize
prefix L
-r Means you can hit it repeatedly without the prefix

42. Start at 1
# Windows and panes index renumbering
set -g base-index 1
setw -g pane-base-index 1

43. Basic UI
# Colors
set -g status-fg white
set -g status-bg black

44. Window movement
# Window Movement
bind -r C-h select-window -t :-
bind -r C-l select-window -t :+

45. or...
prefix w

46. or...
prefix #
#: 0-9

47. My Config
https://gist.github.com/11405471.git
Or, if you download these slides…

48. # Mac Terminal Support
set -g default-terminal "xterm-256color"
# Prefix
set -g prefix C-a
unbind C-b
# Start number at 1
set -g base-index 1
setw -g pane-base-index 1
# Faster command sequences by removing escape time
set -s escape-time 0
# Rebind
set -g prefix C-a
bind C-a send-prefix
unbind C-b
# Move around panes
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R
# Splitting Panes
bind split-window -h
bind - split-window -v
bind -r C-h select-window -t :-
bind -r C-l select-window -t :+
# Allow us to resize panes
bind -r H resize-pane -L 5
bind -r J resize-pane -D 5
bind -r K resize-pane -U 5
bind -r L resize-pane -R 5

49. teamocil
a tmux “addon”

50. teamocil 0.4.5
1.0 was a rewrite, removing features I loved
tmuxinator also exists

51. $ gem install teamocil -v 0.4.5
The version I recommend

52. $ teamocil -e <name>
edit the config

53. 1 session:
2 name: "confoo"
3 clear: true
4 windows:
5 - name: "confoo"
6 layout: even-horizontal
7 options:
8 synchronize-panes: true
9 panes:
10 - cmd: ""
11 - cmd: "top"
12 - name: "redis"
13 panes:
14 - cmd: "redis-server"

54. let’s see it

55. Another sample file

56. 0 session:
1 name: "consumers"
2 clear: true
3 windows:
4 - name: "consumers"
5 options:
6 synchronize-panes: true
7 layout: tiled
8 panes:
9 - cmd: “ssh consumer1 -t 'sudo su - jenkins'"
10 - cmd: "ssh consumer2 -t 'sudo su - jenkins'"
11 - cmd: "ssh consumer3 -t 'sudo su - jenkins'"
12 - cmd: "ssh consumer4 -t 'sudo su - jenkins'"
13 - cmd: "ssh consumer5 -t 'sudo su - jenkins'"
14 - cmd: "ssh consumer6 -t 'sudo su - jenkins'"
15 - cmd: "ssh consumer7 -t 'sudo su - jenkins'"
16 - cmd: "ssh consumer8 -t 'sudo su - jenkins'"
17 - cmd: "ssh consumer9 -t 'sudo su - jenkins'"
18 - cmd: "ssh consumer10 -t 'sudo su - jenkins'"
19 - cmd: "ssh consumer11 -t 'sudo su - jenkins'"
20 - cmd: "ssh consumer12 -t 'sudo su - jenkins'"
21 - cmd: "ssh consumer13 -t 'sudo su - jenkins'"
22 - cmd: "ssh consumer14 -t 'sudo su - jenkins'"
23 - cmd: "ssh consumer15 -t 'sudo su - jenkins'"
24 - cmd: "ssh consumer16 -t 'sudo su - jenkins'"

57. tmux & screen notes
http://www.mechanicalkeys.com/files/os/notes/tm.html

59. Thanks!
Please review at joind.in/13251
Slides at the same URL