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I'm trying to set up tmux on linux server to do shared sessions.
I'have copied my .tmux.conf on the server.
On my mac i have tmux 1.6

on the server, some of the option in my config don't work. is there a way to find out which version of tmux is installed?

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Do this:

$ tmux -V     
    tmux 1.6

Older versions of tmux are indeed buggy. I've never tried shared sessions.

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Shared sessions are actually the default in tmux, as long as both users have the correct permissions on the session files in /tmp. –  Daniel Andersson Apr 2 '12 at 7:44
    
ah! i tried tmux --version and tmux -v but not -V. –  Yannick Schall Apr 7 '12 at 0:40
    
FYI, tmux 1.3 and earlier also lack -V. I'm not sure when -V was introduced (1.4? 1.5?) –  chepner May 4 '12 at 20:03
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