Start daemons with screen: rtorrent, irssi

Question

Hello, community!
I run a headless server and, as of now, it boots with rtorrent as a daemon, using screen, like so:
#!/bin/bash
# file: /etc/rc.d/rtorrentd
USER=myusername
. /etc/rc.conf
. /etc/rc.d/functions
case "$1" in
start)
stat_busy "Starting rtorrent Service"
su $USER -c 'screen -d -m -S rtorrent $USER' &> /dev/null
if [ $? -gt 0 ]; then
stat_fail
else
add_daemon rtorrentd
stat_done
fi
stop)
stat_busy "Stopping rtorrent Service"
killall -w -s 2 /usr/bin/rtorrent &> /dev/null
if [ $? -gt 0 ]; then
stat_fail
else
rm_daemon rtorrentd
stat_done
fi
restart)
$0 stop
sleep 3
$0 start
echo "usage: $0 {start|stop|restart}"
esac
exit 0
The usual, as per our wiki and rtorrent documentation.
I would like to do the same with irssi, but maybe I can't due to not completely understanding this statement:
screen -d -m -S rtorrent $USER
I know the "-d -m" part initializes screen and does not attach to it. "-S rtorrent" names that screen as "rtorrent" (I can check that doing
C-a "
when inside a screen)
But that is as far as I know... I tried using the same script and replacing rtorrent -> irssi, but to no avail, it doesn't start by doing sudo /etc/rc.d/irssid start
I don't need irssi to start at boot, but it would be nice just to
sudo /etc/rc.d/irssid start
and have my IRC setup ready. Any hints? Common mistakes?
Thank you for your time
edit: I also tried to follow irssi's guide but I can't create another screen session. (as in: only rtorrent has its own screen)
Last edited by fhtagn (2011-01-26 05:25:57)

Answer 1

Well, after messing with .screenrc I ended up doing it with a little help from the wiki.
Now, my /etc/rc.d/irssi has:
#!/bin/bash
. /etc/rc.conf
. /etc/rc.d/functions
DAEMON=irssi
USER=<username>
PID=$(pidof -o %PPID $DAEMON)
[ -r /etc/conf.d/irssi ] && . /etc/conf.d/irssi
case "$1" in
start)
stat_busy "Starting $DAEMON Service"
[ -z "$PID" ] && su $USER -c 'screen -dm -S '$DAEMON' -c ~/.irssi/.screenrc_irssi' &> /dev/null
if [ $? != 0 ]; then
stat_fail
else
add_daemon $DAEMON
stat_done
fi
stop)
stat_busy "Stopping $DAEMON Service"
[ -n "$PID" ] && kill $PID &>/dev/null
if [ $? != 0 ]; then
stat_fail
else
rm_daemon $DAEMON
stat_done
fi
restart)
$0 stop
sleep 3
$0 start
echo "usage: $0 {start|stop|restart}"
esac
exit 0
and in ~/.irssi/.screenrc_irssi I have
screen -t irssi irssi
And it works!
Is it overkill? Why do I need to have
[ -z "$PID" ] && su $USER -c 'screen -dm -S '$DAEMON' -c ~/.irssi/.screenrc_irssi' &> /dev/null
with '$DAEMON' instead of $DAEMON ? Otherwise it does not work... Probably something to do with bash