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tmux
Overview
Dramatically expands what can be donewith terminal windowsAlternative to older program named “screen”Often used for interactive server sessions
that can survive network disconnections
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tmux
Book
tmux: Productive Mouse-Free DevelopmentBrian P. Hogan
Pragmatic Programmers
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tmux
For You?
Do you work in a Unixey environment?Do you frequently use terminal windows?Do you value using keyboard shortcuts?
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tmux
tmux Commands
Large number of themMany ways to execute
command-line
shell script
command mode in tmux client
keyboard shortcut in tmux client
tmux configuration file
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tmux
Key Bindings
Prefix keyC-b by default; many change to C-a
Meta keyabbreviated as M; cmd-option on Mac
Commandslist-keys or prefix ?
bind-key [-r] {key} {command}
-r allows repeated used without prefix
unbind-key {key}
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Terminology
serverclientsessionwindowpanestatus bar
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tmux
Sample Session
Demo time!
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tmux
Session Actions
newdetachattachlistrenameswitch - one being displayedkill
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Window Actions
newrenameswitch - one being viewedlistmove - to a different sessionkill
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Pane Actions
new - via splitswitch - one that is activechange layoutresizerotate - to change position of allswap - to change position of twomove - to different windowexecute command - from a script into a specific panekill
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Predefined Pane Layouts ...
even-horizontal
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even-vertical
tmux
... Predefined Pane Layouts
main-horizontalmain-verticaltiled
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Buffers
Each pane has a buffer that storescommands entered and their output
has a limited size that defaults to 2000 lines
Enter “copy mode” toscroll through and copy linesEach copy adds a “paste buffer” to a stack
has a limited size that defaults to 20
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tmux
Copy Mode Actions
enter copy modeexit copy modemove cursorcopy selected textcopy all visible textlist paste buffersview paste buffer contents
save paste buffercontent to a filepaste text froma paste bufferchange paste bufferstack sizedelete one paste bufferdelete all paste buffers
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Configuration Options
Three kindsserver
session
window
Option scopeglobal
specific session
specific window
Actionsset option
show option
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tmux
Configuration Files
Looks for ~/.tmux.conf firstThen looks for /etc/tmux.confLet’s examine mine!
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Scripting
Consider creating one setup script for each projectCreates a new project session if it doesn’t exist
creates windows
splits them into panes
starts commands in some windowsex. editor, file watching apps, ssh, ...
Otherwise, attaches to existing sessionLet’s examine one of mine!
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Collaboration
ssh to a remote serverStart a tmux session thereAsk others to
ssh to same remote server
attach to same tmux session
Collaborate!
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Multiple Monitors
Run client in first monitor attached to main sessionRun client in other monitors attached to a new session that is “grouped” with main sessionAllows each client to viewa different window in main sessionSet window option “aggressive-resize” to “on”
allows each client window to be a different size
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tmux
Mac Specific Advice
Use iTerm2Change some System PreferencesChange some iTerm2 PreferencesFor details, see my OCI SETT article
http://sett.ociweb.com/sett/settJan2013.html
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