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> 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

-- 
Even philosophers will praise war as ennobling mankind, forgetting
the Greek who said: 'War is bad in that it begets more evil than 
it kills.'

Immanuel Kant

---
Talk Mailing List
talk@gtalug.org
http://gtalug.org/mailman/listinfo/talk

---
Talk Mailing List
talk@gtalug.org
http://gtalug.org/mailman/listinfo/talk

-- 
Even philosophers will praise war as ennobling mankind, forgetting
the Greek who said: 'War is bad in that it begets more evil than 
it kills.'

Immanuel Kant