Date: Fri, 05 Sep 2008 10:32:00 +0100 From: Ricardo Jesus <ricardo.meb.jesus@gmail.com> To: David Collins <davidcollins001@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Automatically starting user programs on boot Message-ID: <48C0FC90.6080804@gmail.com> In-Reply-To: <1b30fd140809041251h642ef61at6bcd86bd71d1158a@mail.gmail.com> References: <1b30fd140809041251h642ef61at6bcd86bd71d1158a@mail.gmail.com>
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David Collins wrote:
> |> Date: Thu, 4 Sep 2008 13:06:54 +0200 (CEST)
> |> From: Sa?a Stupar <sasa@stupar.homelinux.net>
> |> Subject: Automatically starting user programs on boot
> |> To: freebsd-questions@freebsd.org
> |> Message-ID:
> |> <3bd584700067958b3d0e6b681c98a709.squirrel@posta.homelinux.net>
> |> Content-Type: text/plain;charset=iso-8859-2
> |>
> |> Hi!
> |>
> |> On my FBSD 7 server I also use screen with rtorrent. In case of server
> |> reboot (power outage, server goes on UPS then power down) the user need
> |> manually to login, then start screen and then rtorrent. Is it possible to
> |> start this procedure automatically and of course as certain user and not
> |> as root?
> |> I was thinking about .startup file or something in users home directory.
> |>
> |> Regards,
> |> Sasa
>
> Hi,
>
> I have been using rtorrent and screen for a while now, it is a great
> setup. Anyway, I found an rc.d file for debian that I have changed to
> make work for me on freebsd 7. I doubt it is as good as it could be,
> but hey, it works fine for me :)
>
> You will have to change some of the variables at the top of the file.
> It opens screen on boot, names it rtorrent and starts rtorrent, does
> its thing in the background. To connect to it type screen -r rtorrent
>
> I placed it in /usr/local/etc/rc.d since it isn't part of the base
> distribution. I also named it with a .sh suffix, I forget why but it
> is something to do with a controlling terminal, I think. I also have a
> nice .screenrc file if you would like since I know how much of a pain
> it is to figure out!
>
> $ cat /usr/local/etc/rc.d
> #!/bin/sh
>
> # PROVIDE: rtorrent
> # REQUIRE: DAEMON
>
> #############
> ###<Notes>###
> #############
> # This script depends on screen.
> # For the stop function to work, you must set an
> # explicit session directory using ABSOLUTE paths (no, ~ is not
> absolute) in your rtorrent.rc.
> # If you typically just start rtorrent with just "rtorrent" on the
> # command line, all you need to change is the "user" option.
> # Attach to the screen session as your user with
> # "screen -dr rtorrent". Change "rtorrent" with srnname option.
> # Licensed under the GPLv2 by lostnihilist: lostnihilist _at_ gmail _dot_ com
> ##############
> ###</Notes>###
> ##############
>
> #######################
> ##Start Configuration##
> #######################
> # You can specify your configuration in a different file
> # (so that it is saved with upgrades, saved in your home directory,
> # or whateve reason you want to)
> # by commenting out/deleting the configuration lines and placing them
> # in a text file (say /home/user/.rtorrent.init.conf) exactly as you would
> # have written them here (you can leave the comments if you desire
> # and then uncommenting the following line correcting the path/filename
> # for the one you used. note the space after the ".".
> # . /etc/rtorrent.init.conf
>
> # system user to run as
> user="davidcollins"
>
> # the system group to run as, not implemented, see d_start for
> beginning implementation
> # group=`id -ng "$user"`
>
> # the full path to the filename where you store your rtorrent configuration
> config="`su $user -c 'echo $HOME'`/.rtorrent.rc"
>
> # set of options to run with
> options=""
>
> # default directory for screen, needs to be an absolute path
> base="`su $user -c 'echo $HOME'`"
>
> # name of screen session
> srnname="rtorrent"
>
> # file to log to (makes for easier debugging if something goes wrong)
> logfile="/var/log/rtorrentInit.log"
> #######################
> ###END CONFIGURATION###
> #######################
>
> . /etc/rc.subr
>
> PATH=/usr/bin:/usr/local/bin:/usr/local/sbin:/sbin:/bin:/usr/sbin
> name=rtorrent
>
> rcvar=`set_rcvar`
> eval "${rcvar}=\${${rcvar}:-'NO'}"
>
> start_precmd=checkcnfg
> start_cmd="${name}_start"
> stop_cmd="${name}_stop"
>
> checkcnfg() {
> exists=0
> for i in `echo "$PATH" | tr ':' '\n'` ; do
> if [ -f $i/$name ] ; then
> exists=1
> break
> fi
> done
> if [ $exists -eq 0 ] ; then
> err 3 "cannot find rtorrent binary in PATH $PATH"
> fi
> if ! [ -r "${config}" ] ; then
> err 3 "cannot find readable config ${config}. check that it is
> there and permissions are appropriate"
> fi
> session=`getsession "$config"`
> if ! [ -d "${session}" ] ; then
> err 3 "cannot find readable session directory ${session} from
> config ${config}. check permissions"
> fi
> }
>
> rtorrent_start()
> {
> echo "Starting $name."
> [ -d "${base}" ] && cd "${base}"
> stty stop undef && stty start undef
> ## start screen with rtorrent inside
> su ${user} -c "screen -dm -S "${srnname}" ${name} ${options} 2>&1
> 1>/dev/null" | tee -a "$logfile" >&2
> }
>
> rtorrent_stop()
> {
> echo "Stopping $name."
> session=`getsession "$config"`
> if ! [ -s ${session}/rtorrent.lock ] ; then
> return
> fi
> pid=`cat ${session}/rtorrent.lock | awk -F: '{print($2)}' | sed
> "s/[^0-9]//g"`
> ## make sure the pid doesn't belong to another process
> if ps -A | grep -sq ${pid}.*rtorrent ; then
> kill -s INT ${pid}
> fi
> }
>
> getsession()
> {
> session=`cat "$1" | grep "^[[:space:]]*session[[:space:]]*=" | sed
> "s/^[[:space:]]*session[[:space:]]*=[[:space:]]*//" `
> echo $session
> }
>
> load_rc_config $name
> run_rc_command "$1"
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>
Great stuff David!
Minda sharing your .screenrc?
Thanks.
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