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Karl Xavier
Karl Xavier

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iTerm2 with tmux -CC

#tmux #iterm2 #macos

iTerm2 is integrated with tmux-CC

With iTerm2, there is no need to remember tmux commands and shortcut keys, you can easily open a new window and split the screen, and restore all after disconnection.

It's super easy to use, just add the -CC parameter when using tmux in iTerm2:

For example, tmux becomes tmux -CC;
For example, tmux new-session-A-s xxx becomes tmux -CC new-session-A-s xxx.

If you configure the following in ~/.ssh/config, ssh login will automatically resume all Windows and programs last time, and the program will continue to run when accidentally disconnected:

Host xxxxx
    RequestTTY Yes
    RemoteCommand tmux -u -CC new-session -A -D -X -s yyyyy /bin/bash
# Above xxxxx and yyyyy can be replaced with any name you like
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Documentation for iTerm2: tmux Integration

This section describes common shortcut keys

The following shortcuts belong to iTerm2 and are compatible with scenarios that do not use tmux.

  • command + t New tab window
  • command + d Left and right split screen
  • command + shift + d Up and down split screen
  • command + [ or command + ] Switch between the split screen
  • command + <- or command + -> Switch tab window
  • command + shift + enter a split screen full screen, Or restore
  • command + fn + <- Scroll to the beginning of the current output
  • command + fn + -> Scroll to the end of the current output
  • command + k Clear all the current output
  • command + control + shift + d Disconnecting tmux and reconnecting restores all open Windows

Hide the tmux control window

By default, after running tmux -CC, iTerm2 will display two Windows, the original window will be shown as follows:

** tmux mode started **

Command Menu
----------------------------
esc    Detach cleanly.
  X    Force-quit tmux mode.
  L    Toggle logging.
  C    Run tmux command.
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You can hide this window by setting, iTerm2 -> Preferences... / Settings... -> General -> tmux:
Select Automatically bury the tmux client session after connecting.

New window opens

You can set the way to open the new window according to your own Preferences, iTerm2 -> Preferences... / Settings... -> General -> tmux:
When attaching, restore windows as: Choose the way you like.
After setting up, run tmux -CC and you will see the difference in each way, which will not be detailed here.

Hide the split screen title bar

By default, Windows that use tmux-CC split-screen display a single title bar, which is very ugly.
The split screen title bar can be hidden by setting, iTerm2 -> Preferences... / Settings... -> Appearance -> Panes:
Do not select Show per-pane title bar with split panes.

Inactive window style

By default, Windows that use tmux-CC split screens are gray when inactive and very ugly.
You can optimize the style of the inactive window by setting, iTerm2 -> Preferences... / Settings... -> Appearance -> Dimming:
Check Dimming affects only text, not background. That's it.

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