Tmux

Introduction

Tmux is a terminal multiplexer that allows you to manage multiple terminal sessions from a single window. It’s extremely useful for developers and system administrators for multitasking in the command line environment.

Install Tmux using Homebrew:

brew install tmux

Tmux Shortcuts and Commands

Starting, Detaching, and Attaching Sessions

• Start new session:

  tmux
  

• Start new named session:

  tmux new -s session_name
  

• Detach from session:
  • Ctrl-b then d
• List sessions:

  tmux ls
  

• Attach to session:

  tmux attach -t session_name
  

• Attach to the last session:

  tmux a
  

Window Management

• Create new window:
  • Ctrl-b then c
• Switch to window by number (e.g., window 1):
  • Ctrl-b then 1
• Rename current window:
  • Ctrl-b then ,
• Close current window:
  • Ctrl-d or exit the shell

Pane Management

• Split pane horizontally:
  • Ctrl-b then %
• Split pane vertically:
  • Ctrl-b then "
• Navigate between panes:
  • Ctrl-b then use arrow keys
• Resize panes:
  • Ctrl-b then hold Ctrl and use arrow keys
• Close current pane:
  • Ctrl-d or exit the shell in the pane

Session Environment

• Reload tmux configuration:

  tmux source-file ~/.tmux.conf
  

• Show all key bindings:

  tmux list-keys
  

• Show system information:
  • Ctrl-b then i

Miscellaneous

• Enter command mode:
  • Ctrl-b then :
• Capture pane content to a file:

  tmux capture-pane -t 0 -S - -E - -p > file.txt
  

• Scroll mode (copy mode):
  • Ctrl-b then [, then navigate using arrow keys, q to exit

Customizing Tmux

• Tmux is highly customizable through the .tmux.conf file in the user’s home directory. You can set key bindings, appearance, and behavior according to your preference.