Re: Running emacs deamon outside login

[Steve Revilak <steve@srevilak.net>]

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>From: Richard Lewis <richardlewis@fastmail.co.uk>
>Subject: Running emacs deamon outside login

>On Linux, I've been wondering whether there's a good way to run emacs
>deamon outside of my login process, so that I can log out and in again
>and connect to the same emacs deamon process.
>
>One sort of solution is running it using start-stop-deamon on Debian,
>essentially as described on emacswiki:
>
>http://www.emacswiki.org/emacs/EmacsAsDaemon#toc3
>
>However, to get this to work I've had to hack it as I describe at the
>bottom of that section (running emacs using su).
>
>This may be more of a Linux question than an Emacs question, but does
>anyone know of any better ways to do this? It's essentially just some
>way to ensure that the emacs process stays alive when I log out.

I hope you wont mind if I give more of a unix answer than an emacs
answer. :)

For the sake of simplicity, I'll assume that you want emacs to run
with your uid, and that you're content to start and kill the emacs
daemon on an as-need basis.  If you can live with these assumptions,
then here is a simple recipie

    nohup emacs --daemon </dev/null &

"nohup COMMAND" runs COMMAND, but arranges for sighup to be ignored.
This allows COMMAND to outlive the shell that started it.

Redirecting stdin from /dev/null will prevent your shell from hanging
when the shell exits.

This invocation should create a $HOME/nohup.out; nohup redirects
stdout and stderr to that file.  If you don't want nohup.out, you can
redirect stdout and stderr yourself, like this

    nohup emacs --daemon </dev/null >/dev/null 2>&1  &

Finally, these command lines use bash syntax.  If you're using a
different shell, then you might have to adjust them slightly.

Steve



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