You probably started tmux from somewhere that PATH was not set
correctly. Try eg C-b : run 'echo $PATH; sleep 100' to check.

You can change it with tmux setenv -g PATH foo:bar:baz


On Wed, Apr 24, 2013 at 05:16:01PM -0400, James Jong wrote:
>    I redirected stderr as Chris suggested (great pointer by the way) with:
> 
>    bind-key -n C-y run "exec 2>&1 ; xclip -o | tmux load-buffer - ; tmux
>    paste-buffer"
> 
>    and when I try to paste with C-y I get the following:
> 
>    sh: tmux: command not found
>    sh: tmux: command not found
>    'exec 2>&1 ; xclip -o | tmux load-buffer - ; tmux paste-buffer'
> 
>    This is odd, since tmux is definitely in $PATH.
>    $ which tmux
>    /home/james/local/bin/tmux
> 
>    and, even if I drop manually into sh, I can still see tmux:
> 
>    $ sh
>    > which tmux
>    > /home/james/local/bin/tmux
> 
>    Why doesn't it see tmux?
> 
>    James
> 
>    On Wed, Apr 24, 2013 at 3:11 PM, Ashwin G <[1]tuxdude.git...@gmail.com>
>    wrote:
> 
>      I had a similar issue with xclip and tmux 1.8. I did not try xclip with
>      previous versions of tmux, so not really sure if it was working with the
>      older tmux versions.
>      I think the problem is that xclip does not recognize that the input is
>      from stdin and waits indefinitely, causing tmux to hang as well and tmux
>      gives up after some time I think (or you could do detach and attach back
>      too to kill xclip immediately).
>      Although this is not a solution, I started using xsel instead of xclip
>      and that seems to work reliably.
>      These are my key bindings using xsel if you're interested:
>      # Copy into clipboard
>      bind C-c choose-buffer "run \"tmux save-buffer -b '%%' - | xsel -i -b\""
>      # Paste from clipboard
>      bind C-v run "xsel -o -b | tmux load-buffer - && tmux paste-buffer"
>      # Copy into primary
>      bind C-y choose-buffer "run \"tmux save-buffer -b '%%' - | xsel -i\""
>      # Paste from primary
>      bind C-p run "xsel -o | tmux load-buffer - && tmux paste-buffer"
>      -Ashwin
> 
>      On Wed, Apr 24, 2013 at 12:04 PM, Chris Johnsen
>      <[2]chris_john...@pobox.com> wrote:
> 
>        On Wed, Apr 24, 2013 at 11:00 AM, James Jong
>        <[3]ribonucle...@gmail.com> wrote:
>        > The following worked in Tmux 1.7 for pasting text in tmux, but not
>        in Tmux
>        > 1.8
>        >
>        > # Move x clipboard into tmux paste buffer
>        > bind-key -n C-y run "xclip -o | tmux load-buffer - ; tmux
>        paste-buffer"
>        >
>        > But I now get the following in the status pane:
>        > xclip -o | tmux load-buffer - ; tmux paste-buffer exited with 127
>        >
>        > even though I can run xclip -o from the terminal (which correctly
>        pastes my
>        > text)
>        >
>        > Any thoughts why?
> 
>        Does it help if you redirect stdin from /dev/null? I.e.
> 
>        * * bind-key -n C-y run "exec </dev/null ; xclip -o | tmux load-buffer
>        - ; tmux paste-buffer"
> 
>        It seems unlikely that "xclip -o" should be reading from stdin, but
>        run-shell (and if-shell) processes do get a different kind of stdin in
>        1.8. Also, a bug I introduced in 1.8 leaves run-shell (and if-shell)
>        proceses with an open, but non-responsive stdin (previously it was
>        always /dev/null).
> 
>        If that works and you are comfortable building tmux form source, then
>        you might also try using your original command (no /dev/null redirect)
>        with a build from the SourceForge master branch; it has a fix that
>        should prevent the non-responsive stdin problem for run-shell (and
>        if-shell) processes.
> 
>        If none of that helps, you might try temporarily capturing stderr (it
>        is usually /dev/null) to see if there are any useful error messages to
>        go with the 127 exit:
> 
>        * * bind-key -n C-y run "exec 2>&1 ; xclip -o | tmux load-buffer - ;
>        tmux paste-buffer"
> 
>        --
>        Chris
>        
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