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cz0
Apprentice
Joined: 13 Jun 2005
Posts: 280
Location: /earth/russia/moscow
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 Posted: Fri Jun 18, 2010 8:56 am Post subject: kde4_shutdown.sh script for stopping KDE4 session, saving it |
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Here comes my script, that can shutdown KDE 4 saving current session. It can do the work from a regular user (session owner) and root, that makes it suitable for been run from acpid. Maybe it will help somebody. All comments are welcome.
| Code: |
# /bin/sh
# Written by cz0 2010
# Distributed under the terms of the GNU General Public License v2
SU="/bin/su"
QDBUS="/usr/bin/qdbus"
TIMEOUT="20"
USER="$(/usr/bin/whoami)"
for KDEPID in $(ps aux | grep 'startkde' | grep -v 'grep' | awk '{print $2}'); do
KDEUSER=$(ps u $KDEPID | grep 'startkde' | awk '{print $1}')
if [[ "$KDEUSER" != "$USER" && "$USER" != "root" ]] ; then
logger "kde4_shutdown: unable to stop KDE session of user $KDEUSER"
exit 67
fi
CURRENT_DBUS_SESSION_BUS_ADDRESS=$(grep -z DBUS_SESSION_BUS_ADDRESS /proc/$(ps h --ppid $KDEPID -o pid | awk '{print $1}')/environ | sed -e 's/DBUS_SE>
export DBUS_SESSION_BUS_ADDRESS=$CURRENT_DBUS_SESSION_BUS_ADDRESS
logger "kde4_shutdown: sending shutdown signal to KDE session pid=$KDEPID owner uid=$KDEUSER via $DBUS_SESSION_BUS_ADDRESS"
if [[ "$USER" == "root" ]] ; then
$SU -c "$QDBUS org.kde.ksmserver /KSMServer logout 0 0 0" $KDEUSER
else
$QDBUS org.kde.ksmserver /KSMServer logout 0 0 0
fi
while [[ "$(ps h --ppid $KDEPID -o pid)" != "" && $TIMEOUT > 0 ]] ; do
sleep 1s
let "TIMEOUT -= 1"
done
done
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Grimi
n00b
Joined: 08 Jul 2003
Posts: 13
Location: Germany
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| Posted: Thu Jul 26, 2012 4:25 pm Post subject: |
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I wanted to logoff without killing the X-Server because out of the blue my kde froze.
This qdus thingy works pretty well. I stumbled upon this via some other forums and traced it back to here. And because i myself use gentoo, so I just want say thank you for sharing this information!  |
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SiliconBadger
n00b
Joined: 28 Jun 2012
Posts: 5
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| Posted: Tue Dec 11, 2012 6:24 am Post subject: Doesn't work for me |
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Copied and pasted into a text file, made it executable, and I get this error when running the script. Is it supposed to take any arguments? I don't know anything about scripts.
| Quote: |
kde-shutdown: line 18: unexpected EOF while looking for matching `''
kde-shutdown: line 34: syntax error: unexpected end of file
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urcindalo
l33t
Joined: 08 Feb 2005
Posts: 623
Location: Almeria, Spain
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| Posted: Wed Jan 30, 2013 10:43 am Post subject: Re: Doesn't work for me |
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| SiliconBadger wrote: | Copied and pasted into a text file, made it executable, and I get this error when running the script. Is it supposed to take any arguments? I don't know anything about scripts.
| Quote: |
kde-shutdown: line 18: unexpected EOF while looking for matching `''
kde-shutdown: line 34: syntax error: unexpected end of file
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Same here  |
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Johanns
n00b
Joined: 31 Jan 2013
Posts: 1
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| Posted: Thu Jan 31, 2013 1:10 am Post subject: |
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I figured out why the posted script was giving errors. The line that begins with "CURRENT_DBUS_SESSION_BUS_ADDRESS=" and ends with ">" seems to have been truncated. It seems like there is (or at least was) a KDE issue where an important environment variable DBUS_SESSION_BUS_ADDRESS is/was not set properly. This part of the script appears to be a workaround for this problem. I changed the script to automatically set this variable correctly, but only if it is not already set. I think this is safer since at least on my system this variable is already set. I did test that this clever technique for figuring out how KDE set this variable for itself actually works fine.
Below is my attempt at a corrected version. It works for me under Suse 12.1.
I am not sure why Kde does not come with a shell script like this one to allow logging out of Kde without resorting to the menu.
| Code: |
# /bin/sh
# Written by cz0 2010
# Distributed under the terms of the GNU General Public License v2
SU="/bin/su"
QDBUS="/usr/bin/qdbus"
TIMEOUT="20"
USER="$(/usr/bin/whoami)"
for KDEPID in $(ps aux | grep 'startkde' | grep -v 'grep' | awk '{print $2}'); do
KDEUSER=$(ps u $KDEPID | grep 'startkde' | awk '{print $1}')
if [[ "$KDEUSER" != "$USER" && "$USER" != "root" ]] ; then
logger "kde4_shutdown: unable to stop KDE session of user $KDEUSER"
exit 67
fi
# If the DBUS_SESSION_BUS_ADDRESS environment variable is not already set correctly
# then set it by finding the environment file for the startkde process in proc and
# parsing it to get get the correct setting.
if [ -z "$DBUS_SESSION_BUS_ADDRESS" ]; then
ENVIRON_FILE=/proc/$(ps h --ppid $KDEPID -o pid | awk '{print $1}')/environ
CURRENT_DBUS_SESSION_BUS_ADDRESS=$(grep -z DBUS_SESSION_BUS_ADDRESS $ENVIRON_FILE | sed -e 's/DBUS_SESSION_BUS_ADDRESS=//')
export DBUS_SESSION_BUS_ADDRESS=$CURRENT_DBUS_SESSION_BUS_ADDRESS
fi
logger "kde4_shutdown: sending shutdown signal to KDE session pid=$KDEPID owner uid=$KDEUSER via $DBUS_SESSION_BUS_ADDRESS"
if [[ "$USER" == "root" ]] ; then
$SU -c "$QDBUS org.kde.ksmserver /KSMServer logout 0 0 0" $KDEUSER
else
$QDBUS org.kde.ksmserver /KSMServer logout 0 0 0
fi
while [[ "$(ps h --ppid $KDEPID -o pid)" != "" && $TIMEOUT > 0 ]] ; do
sleep 1s
let "TIMEOUT -= 1"
done
done
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steveL
Watchman
Joined: 13 Sep 2006
Posts: 5153
Location: The Peanut Gallery
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| Posted: Thu Jan 31, 2013 1:34 pm Post subject: |
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You can replace: | Code: | | ps aux | grep 'startkde' | grep -v 'grep' | awk '{print $2}' |
with: | Code: | | ps aux | awk '/startkde/ && ! /awk/ { print $2 }' |
which will save two forks of grep and make things a bit quicker. pgrep from sys-process/procps is a much better method, however.
You can even speed it up further without using regexen at all:
| Code: | | ps aux | awk 'index ($0, "startkde") && ! index($0, "awk") { print $2 }' |
Actually I see you're getting the user id as well: I'd do this all in one with:
| Code: | | ps aux | awk -v u="$LOGNAME" '/startkde/ && ! /awk/ && $1 == u { print $2 }' |
Not sure if that's right for your logic checking against username, though. Just: { print $1, $2 } gets the info, but you'd have to do:
| Code: | local u pid data
data=$(ps aux | awk '/startkde/ && ! /awk/ { print $1, $2 }'
while read -r u pid; do
case $u in
"$LOGNAME") :
;; *) logger "kde4_shutdown: unable to stop KDE session of user $u"
exit 67
esac
done << EOF
$data
EOF |
or the like to process the data, since we don't have BASH < <(process substitution) nor <<< "$var" input.
Just for ref, with pgrep that'd be:
| Code: | | pgrep -u "$LOGNAME" startkde |
LOGNAME is the standard POSIX environment variable for the currently logged-in user.
HTH,
steveL
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update - "a most excellent portage wrapper"
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