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munki/code/pkgtemplate/Scripts_app_usage/preinstall

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#!/bin/bash
# Lovingly lifted from Per Olofsson
# https://github.com/MagerValp/Scripted-Mac-Package-Creation/blob/master/scripts/postinstall
export PATH=/usr/bin:/bin:/usr/sbin:/sbin
# Execute preinstall actions if we're installing on a live system.
# This is useful for unloading launch daemons and agents.
if [ "$3" == "/" ]; then
# Run preinstall actions for root.
launchctl unload /Library/LaunchDaemons/com.googlecode.munki.app_usage_monitor.plist
launchctl unload /Library/LaunchDaemons/com.googlecode.munki.appusaged.plist
# Run preinstall actions for all logged in users.
os_major_version=$(sw_vers -productVersion | cut -d. -f2)
for pid_uid in $(ps -axo pid,uid,args | grep -i "[l]oginwindow.app" | awk '{print $1 "," $2}'); do
pid=$(echo $pid_uid | cut -d, -f1)
uid=$(echo $pid_uid | cut -d, -f2)
if [[ $os_major_version -lt 10 ]] ; then
launchctl bsexec "$pid" chroot -u "$uid" / launchctl unload /Library/LaunchAgents/com.googlecode.munki.app_usage_monitor.plist
else
launchctl asuser "$uid" launchctl unload /Library/LaunchAgents/com.googlecode.munki.app_usage_monitor.plist
fi
done
fi
exit 0