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My current workflow is:

  1. CTRL+SHIFT+T to launch a new terminal window. That starts a new zsh terminal.
  2. Type tmux to start tmux.

How can I have tmux load by default with a new terminal window?

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3 Answers 3

up vote 11 down vote accepted

There are at least two ways:

  1. Write something like

    if [ "$TMUX" = "" ]; then tmux; fi
    

    at the beginning of ~/.zshrc. Note the conditional test to a possible loop when tmux spawns its own zsh.

  2. Modify terminal launching command to something like

    xterm -e tmux
    

I prefer the second way, because sometimes I need to launch a terminal without tmux (for example when I need to reconnect to an existing session).

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2  
Or have different shortcuts for xterm -e tmux and plain xterm. –  Nikolai N Fetissov Jun 21 '12 at 13:37
    
Yes, actually I meant it under "I prefer the second way" =) –  rush Jun 21 '12 at 13:39
    
Executing tmux at the end of .zshrc will cause an endless loop of zsh starting tmux starting zsh starting tmux ... –  Thor Jun 21 '12 at 14:56
    
How would one go about "modifying terminal launching command"? –  eoinoc Jun 22 '12 at 9:04
    
@eoinoc it depends on your environment. For example, I'm using awesome wm, therefore I just need to modify string in my config file. In kde you need to edit hotkeys. And so on. –  rush Jun 22 '12 at 9:11

Be careful with the echo tmux >> ~/.zshrc solution though, I remember that simply throwing a bash in a .cshrc file caused me trouble over SSH.

IIRC the problem occurred with non-interactive shells, so you should test for that.

case $- in *i*)
  if [ -z "$TMUX" ]; then exec tmux; fi;;
esac
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You're missing a space between " and ]. –  n.st Apr 9 at 1:17

Add "tmux" to your .zshrc file, which gets executed every time you start zsh. The quick way:

echo tmux >> ~/.zshrc
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