hyperion.ng/cmake/debian/prerm

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#!/bin/sh
echo "---Hyperion ambient light prerm ---"
# search for users in system, returns first entry
FOUND_USR=`who | grep -o -m1 '^\w*\b'` || "root"
# stop running daemon before we delete it
HYPERION_RUNNING=false
pgrep hyperiond > /dev/null 2>&1 && HYPERION_RUNNING=true
if grep -m1 systemd /proc/1/comm > /dev/null
then
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echo "---> stop init deamon: systemd"
# systemd
$HYPERION_RUNNING && systemctl stop hyperiond"@${FOUND_USR}" 2> /dev/null
# disable user specific symlink
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echo "---> Disable service and remove entry"
systemctl -q disable hyperiond"@${FOUND_USR}"
rm -v /etc/systemd/system/hyperiond@.service 2>/dev/null
elif [ -e /sbin/initctl ]
then
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echo "---> stop init deamon: upstart"
# upstart
$HYPERION_RUNNING && initctl stop hyperiond
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echo "---> Remove upstart service"
rm -v /etc/init/hyperion* 2>/dev/null
initctl reload-configuration
else
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echo "---> stop init deamon: sysV"
# sysV
$HYPERION_RUNNING && service hyperiond stop 2>/dev/null
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echo "---> Remove sysV service"
update-rc.d -f hyperion remove
rm /etc/init.d/hyperion* 2>/dev/null
fi
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# In case we don't use a service kill all instances
killall hyperiond 2> /dev/null
# delete desktop icons; desktop-file-edit is a workaround to hide the entry and delete it afterwards manual.
# TODO Better way for deletion and keep the desktop in sync without logout/login or desktop dependend cmds?
echo "---> Delete Hyperion desktop icons"
desktop-file-edit --set-key=NoDisplay --set-value=true /usr/share/applications/hyperiond.desktop 2>/dev/null
rm -v /usr/share/applications/hyperion* 2>/dev/null
rm -rv /usr/share/pixmaps/hyperion 2>/dev/null
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exit 0