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#+TITLE: Emacs Tramp
* Why would you want to use this?
Tramp is an abstraction layer for emacs to access filesystems on
remote machines, or the local machine as a different user. Its main
use-cases include:
* Editing/managing files remotely
* Editing a file as root (sudo)
* Editing files remotely
The primary purpose of TRAMP is to edit files remotely. This can be
done by altering the file path that needs to be visited like so:
#+BEGIN_SRC
/[protocol]:[user]@[host]:[file-path]
#+END_SRC
For example editing =/etc/fstab= on a remote computer can be
achieved by visiting (C-x C-f):
#+BEGIN_SRC
/ssh:root@server.com:/etc/fstab
#+END_SRC
Once the connection is established, you can use Emacs as normal to
edit the file.
** Dired
Other modes of Emacs also support TRAMP, such as Dired. Using dired
with TRAMP is an effective way to manage files on a remote
computer.
To open a folder with Dired on a remote machine, either visit the
directory like you would a file, or use C-x d to visit the
directory with Dired directly.
** Performance
TRAMP isn't particularly fast. It works well to edit code or
configuration files remotely, especially for one-offs. But it can
be quite slow and unwieldy for everyday use or to look at large
files (like log files).
* Using tramp for Sudo
It's sometimes necessary to edit files as root on your local
machine, for example to adjust network settings or other. Using =vim=
in terminal is distasteful and opening Emacs as root would mean
lacking your beautiful configuration.
Tramp is useful to also edit files as root. To do so, visit a file
as usual but change the file path to:
#+BEGIN_SRC
/sudo::/[file-path]
#+END_SRC
* Useful links
* [[https://www.gnu.org/software/tramp/][Tramp documentation]]
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