sessions should be nested with care, unset $TMUX to force

[Mariusz.makowski]

How can i rid of the message:

sessions should be nested with care, unset $TMUX to force
sessions should be nested with care, unset $TMUX to force


Wheever i start Tmux, i get this message.
i am not starting tmux inside another tmux.

[Thomas Adam]

Post by Mariusz.makowski
sessions should be nested with care, unset $TMUX to force
sessions should be nested with care, unset $TMUX to force
Wheever i start Tmux, i get this message.
i am not starting tmux inside another tmux.

Then the shell that an instance of tmux has started from is propagating that
value down to each shell. So you must be starting tmux from _somewhere_ --
or you've set TMUX somewhere manually.

-- Thomas Adam

[simfox3]

Mariusz,
Are you starting tmux on shell login (.bashrc/.bash_profile)? Each pane in
tmux runs as if launched at login--meaning they execute .bash_profile /
.bashrc. Fortunately, by default, nested tmux sessions are not allowed, but
wrap your tmux execution in a conditional to prevent the pane from even
trying to create a nested session.

Last lines from my .bash_profile:

if [[ "$TERM" != "screen-256color" ]]; then
exec tmux -S /var/tmux/$USER new-session -A -s "$USER"
fi

-Saad

Post by Thomas Adam

Post by Mariusz.makowski
sessions should be nested with care, unset $TMUX to force
sessions should be nested with care, unset $TMUX to force
Wheever i start Tmux, i get this message.
i am not starting tmux inside another tmux.

Then the shell that an instance of tmux has started from is propagating that
value down to each shell. So you must be starting tmux from _somewhere_ --
or you've set TMUX somewhere manually.
-- Thomas Adam
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[Mariusz.makowski]

Post by simfox3
Mariusz,
Are you starting tmux on shell login (.bashrc/.bash_profile)? Each pane
in tmux runs as if launched at login--meaning they execute .bash_profile
/ .bashrc. Fortunately, by default, nested tmux sessions are not
allowed, but wrap your tmux execution in a conditional to prevent the
pane from even trying to create a nested session.
if [[ "$TERM" != "screen-256color" ]]; then
exec tmux -S /var/tmux/$USER new-session -A -s "$USER"
fi
-Saad

Saad, thanks much.

I did change to my file based on yours and now it work perfectly

if [[ $SHLVL != "2" ]]
then
tmux -S /var/tmux/$USER new-session -A -s "$USER"
fi

Although i think SHLVL will do make more use for me, i am setting
TERM=screen-256color for nontmux connections (like from my desktop where
i already have tmux running on gnome-terminal)

[Mariusz.makowski]

Post by Thomas Adam
Then the shell that an instance of tmux has started from is propagating that
value down to each shell. So you must be starting tmux from_somewhere_ --
or you've set TMUX somewhere manually.
-- Thomas Adam

Thanks Thomas,

i found .login file has:

tmux attach || tmux new

And it was executed every time i want to start tmux manually or split
pannel.