CODEWITHSUNDEEP
terminalscreentmux
blueFast
blueFast

Reputation: 44491

tmux pipe-pane not working

I have a shortcut defined to start logging a pane to a file, and another to stop logging. The shortcuts are active. These are the commands in my .tmux.conf:

bind-key H pipe-pane "cat >>$HOME/tmux.log"
bind-key h pipe-pane

By pressing C-b ? I am able to see the definition:

   H: pipe-pane "exec cat >>/home/myuser/tmux.log"                                                                                                                                                                                     
   h: pipe-pane

The idea is that C-b H will start logging and C-b h will stop it, for the current pane. It is clear that different panes will collide, but I am not worried about this now. I just want logging to work, and it does not. The shortcuts seem to work fine, and the file is created alright:

-rw-r--r-- 1 myuser mygroup 0 2012-04-28 11:21 tmux.log

But it always has size 0. Even after closing. Nothing, never ever, gets written to it. Any ideas on how to debug this issue?

This is the only gripe I have with tmux compared to screen, where logging has always been a simple task, working out of the box without any configuration needed.

Upvotes: 4

Views: 6259

Answers (2)

Drew LeSueur
Drew LeSueur

Reputation: 20175

For my tmux 1.8, I only got this to work first being inside the tmux window and then hitting

[Ctrl]+[b] [:]

and then typing:

pipe-pane -o 'cat >> ~/output.log'

It did not work when I was detached from the tmux session and tried

tmux pipe-pane -o -t sessionname:0 'cat >> ~/output.log'
# that does not work for me in tmux 1.8

Upvotes: 0

ThomasAdam
ThomasAdam

Reputation: 194

What version of tmux? Why aren't you using the -o option to pipe-pane?

If this is still producing a zero-length file, try starting tmux with -vvvv, and repeat the pipe-pane commands, and put the logs somewhere.

Upvotes: 1

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