Re: [GTALUG] Locking KDE 5 screen from shell script

13 Aug 2015

      Thanks for the tip Mauro, Lennart! It turns out the problem was with not 
having the DISPLAY variable set properly.  So in lockkde.sh I invoke 
qdbus this way

Konsole output
DISPLAY=:0 /usr/bin/qdbus org.freedesktop.ScreenSaver /ScreenSaver Lock

And now it works!

Thanks again,

Randy

On 12/08/15 07:35 AM, Mauro Souza wrote:
...
You could change this line
ps aux | grep cinnamon-session | grep -v grep
to this
pgrep cinnamon-session
It's cleaner and works well.
To answer the main question, try to install bashdb and run the script 
thru it. It's the bash debugger, it's far more powerful than bash -vx.
On Aug 12, 2015 04:22, "Randy Jonasz" <rjonasz@rjonasz.org 
<mailto:rjonasz@rjonasz.org>> wrote:
I recently installed kde5 on debian stretch.  I have a yubikey
    which I use to log in with.  I'd like to lock the screen when I
    remove the yubikey.  I have it working with cinnamon and lxde but
    I can't quite get it with kde.  I can lock the screen if I run the
    shell script from a terminal as root but when I remove the yubikey
    the shell script returns error code 1.
Here's my shell scripts:
ykgone.sh
#! /bin/sh
    if [ -z "$(lsusb | grep Yubikey)" ] ; then
           if [ ! -z "$(ps aux | grep cinnamon-session | grep -v
    grep)" ] ; then
                   /bin/su rjonasz -c "DISPLAY=:0
    cinnamon-screensaver-command -l"
           elif [ ! -z "$(ps aux | grep startkde | grep -v grep)" ] ;
    then
                   /usr/bin/sudo -u rjonasz -H -i
     /usr/local/bin/lockkde.sh
           else
                   /bin/su rjonasz -c "DISPLAY=:0 xscreensaver-command
    --lock"
           fi
    fi
lockkde.sh
#! /bin/sh
kde_pid=`pidof kdeinit5`
    export `cat /proc/$kde_pid/environ|grep -ao
    'DBUS_SESSION_BUS_ADDRESS=[[:graph:]]*'`
    /usr/bin/qdbus org.freedesktop.ScreenSaver /ScreenSaver Lock
I can't seem to figure this one out.
Thanks for any help!
Randy
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