Tmux Help

Tmux Help

• Session: tmux session
• Pane: Terminal within a tmux session
• Prefix Key: Ctrl + b
• Window: Parent Terminal of Pane
  • One window can have any number of Panes
  • In one tmux session, we can have multiple windows

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Getting Started

1. To enter tmux:

   tmux
   

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Panes

1. For a new Pane:
   • Ctrl + b then % (for vertical Pane)
   • Ctrl + b then " (for horizontal Pane)
2. To switch between Panes:
   • Ctrl + b then arrow-keys
   • Ctrl + b then o (to next pane)
3. Resizing the Panes:
   • Ctrl + b then Ctrl + arrow-keys
4. For exit (close) Pane:

   exit
   

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Windows

1. To create a new window:
   • Ctrl + b then c
   • The active window is marked with *
   • The window name is shown at the bottom-left
2. To switch between windows:
   • Ctrl + b then window-number (window number can be seen at the bottom-left)
3. To rename a window:
   • Ctrl + b then , (comma)
   • Then enter text and press enter
4. To exit a window:

   exit
   

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Sessions

1. To detach the current session:
   • Ctrl + b then d
   • We can also directly close the terminal
2. To list tmux sessions:

   tmux ls
   

3. To attach a session:
   • tmux attach -t session_name_or_number (session-number can be seen from the list)
   • tmux attach (attaches the last session)
4. To rename a session:

   tmux rename-session -t session-number
   

5. To create a session:

   tmux new
   

6. To create a session with a name:

   tmux new -s session_name
   

7. To kill/stop a session:

   tmux kill-session -t session_name_or_number
   

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Important Commands

1. New session & command to execute from CMD:

   tmux new 'command_to_execute'
   

   Example: tmux new 'serve -p 3000'

2. New session & detach mode & command to execute from CMD:

   tmux new -d 'command_to_execute'
   

   Example: tmux new -d 'serve -p 3000'

3. New session with name & detach mode & command to execute from CMD:

   tmux new -s session_name -d 'command_to_execute'
   

   Example: tmux new -s s1 -d 'serve -p 3000'

4. To add a new pane to an existing session from CMD (by default detach mode):

   tmux split-window -t session_name_or_number -v 'command_to_execute'
   

   Examples:

   • tmux split-window -t s1 -v 'serve -p 4000'
   • tmux split-window -t s1 -h 'serve -p 5000'
   • -v for vertical split
   • -h for horizontal split
5. New session & multiple Panes in detach mode:

   tmux new -s s1  -d 'serve -p 3000' \; split-window -h -t s1 'top'    # top is a command
   

   or

   tmux new -s s1 -d 'serve -p 3000' && tmux split-window -h -t s1 'top'