[mythtv-users] Run a program from a key?
R. G. Newbury
newbury at mandamus.org
Tue Feb 7 02:23:39 UTC 2012
On 02/06/2012 04:47 PM, Kris B. wrote:
> On Mon, Feb 6, 2012, at 04:27 PM, Tom Lichti wrote:
>> What desktop manager are you running? Most of them have a facility to
>> remap keys, or go lower level and use xbindkeys.
>>
>> Tom
>
> I never even thought of that. Running Mythbuntu/XFCE, so I am sure I
> can do that. Great... I will be using even less power (though longer
> startups, I guess :) )
>
> Thanks!
I think this will depend on exactly how your remote 'talks' to the
computer. Rob Longbottom's reply works for a lirc connection. It's what
I use.
But this can work using xbindkeys if your remote emulates a keyboard
directly (as it sounds like it does with the dongle). It really depends
on whether the remote/computer combo will stay 'awake' enough to respond
to a 'wake up'.
I just tried a quick experiment.
1) you might need to install xbindkeys first!
2) use xev to find the state and keycode of a little used key which you
want to re-map. For this I used the PrtSc (PrintScreen key) on my laptop.
xev says PrtSc has a 'state' of 0x0 and keycode of 170
3) I created a .xbindkeysrc file in /home/user with xbindkeys --defaults
> /home/user/.xbindkeysrc
4) I added this to the bottom of .xbindkeysrc:
"/usr/local/sbin/junk"
c:107 + m:0x0
PrtSc
5) The executable file 'junk' contains only:
#!/bin/bash
/usr/bin/mplayer /usr/share/sounds/Kopete_Event.ogg
(Plays a sound when it runs.)
6) Then 'xbindkeys &' in a console
and
7) I pressed 'PrtSc' and got sounds!
If you add 'xbindkeys' to either ~/.xinitrc, or call 'xbindkeys &' in
rc.local, it will do the binding on every boot.
8) You might want to try something like this script. I map
'mythpowerbutton.sh' to a key on my IR remote using irexec and lircrc as
first mentioned. It toggles mythfrontend, starting or killing it when
pressed, depending on what a grep of the output of 'ps' finds. For your
use, you can substitute a command to shut things down/start up.
Useful for clearing hangs or other problem states from the
remote...instead of ssh-ing in from the laptop.
(What? Couch-potato? Naaah...Pass the chips!)
mythpowerbutton.sh
******************************************************
#!/bin/bash
# check for running mythfrontend
STATUS=`ps -ae | grep mythfrontend | grep -v grep | wc -l | awk '{print
$1}'`
# check for proper Display so it only runs on the correct frontend
count=`echo $DISPLAY | grep ":0" | wc -l `
export STATUS
if [ $STATUS -eq 0 ];
then
# Start mythfrontend
/usr/bin/mplayer /usr/share/sounds/KDE-Im-Contact-In.ogg
/usr/local/bin/mythfrontend --display $DISPLAY -v playback -l
/var/log/mythfrontend.log &
sleep 3
killall startfrontend.sh;
else
# kill all running mythfrontends
/usr/bin/mplayer /usr/share/sounds/Kopete_Event.ogg
killall mythfrontend
killall startfrontend.sh;
fi
exit 0
******************************************************
HTH
Geoff
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