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I find that the best to run my shells in remote machines in emacs is using TRAMP (using the ssh command in a local shell does not work for my needs). However, I only know how to run a TRAMP shell if I first visit a remote file with C-x C-f and then do M-x shell from that buffer. However, I would like to open a shell in a remote machine, using TRAMP, before opening any file on that remote host, but cannot find any explanation on how to do that on my searches. Is it possible to do that?

  • Please add some additional explanation of what it is your are seeking. Clearly, you are more advanced that just wanting to know how to ssh into a remote machine from a shell buffer, but that is the direction your question leads the reader. So, do you want to have a function open a shell buffer and automatically ssh into your remote machine -- so that you are at a prompt and path on the remote server? Or, do you want a shell mode buffer to already be open, and then just hit an auto-login command? Do you use sshpass? Would you prefer to enter your password each time? – lawlist Nov 17 '14 at 18:26
  • Thanks @lawlist ! I reworded the question in hopes that it is more clear. To address your questions: I want some way that lets me make tramp open a remote shell buffer in a machine I specify. The expected behavior is that emacs asks for my password when I try to do this. – jmlorenzi Nov 17 '14 at 22:19
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Tramp comes into play, when the default-directory is remote. So you might change it, as you do with opening a remote file (or directory) in advance.

But you could write a small command like this:

(defun my-shell () (interactive) (let ((default-directory "/ssh:user@host:")) (shell)))

Then you can call M-x my-shell

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    If emacs runs on windows and you want to login onto a linux host, you could set with M-x customize-variable explicit-shell-file-name to \bin\bash to avoid missing shell errors. – kwarnke Jul 25 '18 at 10:17
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I use dired to access the remote machine and open a shell there.

Here is the function I use, taken and modified from Tikhon Jelviss' emacs configuration:

(defun anr-shell (buffer)
  "Opens a new shell buffer where the given buffer is located."
  (interactive "sBuffer: ")
  (pop-to-buffer (concat "*" buffer "*"))
  (unless (eq major-mode 'shell-mode)
    (dired buffer)
    (shell buffer)
    (sleep-for 0 200)
    (delete-region (point-min) (point-max))
    (comint-simple-send (get-buffer-process (current-buffer)) 
                        (concat "export PS1=\"\033[33m" buffer "\033[0m:\033[35m\\W\033[0m>\""))))

Example:

(anr-shell "/vagrant@localhost#2222:/vagrant/")
  • Please repost the answer here, as links to the actual answer is discouraged to avoid link rot – Jarmund Apr 23 '15 at 9:02
  • The answer has been reposted. – mandark Apr 23 '15 at 9:28
  • Vote changed accordingly. – Jarmund Apr 23 '15 at 9:33
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Although not made overly clear in the manual C-u M-x shell allows you to specify the name of the shell buffer, and more importantly in your case allows you to specify the Default directory, which can take a string just like Tramp /ssh:server:/my/path.

An alternative is to open dired (C-x d) rather than an actual file, if you M-x shell from directory, the shell opens with the context of the dired directory.

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