David Dynerman <emperord...@block-party.net> writes:
> Dear Org Mode Friends, > > I’m having some trouble getting the shell I want to run on remote hosts in > session ob-shell blocks - it seems that no matter what shell I specify, > session > blocks will always run /bin/sh. I’m not sure if this is an org or tramp > configuration issue on my end, or a bug in org. > > I’m pasting a snippet that reproduces the behavior in emacs -Q below. Does > anyone have an inkling if this is a bug, or, alternatively, suggestions for > how > I can run remote ob-shell sessions with the shell of my choice? > > Thank you, > David > > #+BEGIN_SRC emacs-lisp > > (require 'ob-shell) > > (emacs-version) > > #+END_SRC > > > > #+RESULTS: > : GNU Emacs 27.2 (build 1, x86_64-apple-darwin17.7.0, Carbon Version 158 > AppKit 1561.6) > : of 2021-05-20 > > > #+BEGIN_SRC emacs-lisp > > (org-version) > > #+END_SRC > > > > #+RESULTS: > : 9.4.4 > > > #+BEGIN_SRC zsh :dir /ssh:remote-host:/home/ubuntu > > echo $0 > #+END_SRC > > > > #+RESULTS: > : zsh > > > #+BEGIN_SRC zsh :dir /ssh:remote-host:/home/ubuntu :session foobar > > echo $0 > #+END_SRC > > > #+RESULTS: > | | > | $ /bin/sh | This is just some wild guess work, so may be completely wrong .... I don't think it is a bug. The ob-shell library doesn't really know anything about remote - the fact you can execute things remotely is just part of the underlying Emacs tramp support. As far as I know, the shell you get in the remote login is determined by the remote host i.e. in the /etc/passwd file of the remote user account (for login shells) and /bin/sh if ssh is just being called to execute a command. In your case, because your calling echo $0 it is executed with /bin/sh I would start with tramp and try to configure it to execute commands using zsh. The ob-shell library isn't really aware of 'remote' - it is just calling tramp based on the path you provide, which is why I think tramp is a good place to start. If this cannot be easily done, look at the ssh manual and see if you can do this via a ~/.ssh/rc file on the remote host. If you cannot find a way to configure tramp, perhaps try working out how to just execute commands over ssh in a specific shell, like zsh. I suspect once you work out how to do this with plain ssh, you may see a way to configure tramp to do the same. A final solution would be to just add a call to zsh in your source block before the rest of what you want to run. -- Tim Cross
