Updated remote script
Tomi Ollila
tomi.ollila at iki.fi
Thu Jan 19 09:50:38 PST 2012
On Thu, 19 Jan 2012 11:24:32 -0500, Jesse Rosenthal <jrosenthal at jhu.edu> wrote:
> Dear all,
>
> The big change in this script is that it uses dtach to set up a ssh
> socket, rather than suggesting that users do so themselves with the
> ControlMaster configuration option. This has the benefit of not making
> anyone mess with ~/.ssh, and not impacting your other ssh work. It also
> handles the issues of dead sockets on a laptop. (`ssh -Nf` seems like it
> *should* work too, but emacs hangs when it is used in a script.) The
> problem with this approach, of course, is that it requires dtach. A good
> solution would be to (a) make the use of reusable ssh sockets optional,
> and (b) allow it to use screen or tmux instead of dtach. Both would be
> pretty easy, and I'll work on it at some point. But I figured getting a
> two-year-old, broken script of the wiki would be a good first step.
Quick comments: "/tmp/notmuch_dtach.socket" is dangerous (and the _ssh).
either
make directory /tmp/notmuch_`id -u`
and chmod it to 0700
and make sure you own it and it has right permissions.
or
make directory for these sockets in $HOME and chmod that to 700
or
just drop the socket in $HOME/.ssh (which should already be protected)
I personally use dtach, but basically never tmux nor screen ;)
--8<----8<----8<----8<----8<----8<----8<----8<--
In one of my scripts I do controlmaster connection in the following way:
ssh -O check "$rhost" || ssh -f -oControlMaster=yes $rhost sleep 18001
...
echo Backgroung ssh tunnel open for 5 hours.
echo SIGTERM pid `ps ax | awk '/180[0]1/ { print $1; }'` \
In case that is not what you want.
and then ssh -oControlMaster=no $rhost command args
to do the jobs...
> [0] http://notmuchmail.org/remoteusage/
more later..
> Best,
> Jesse
Tomi
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