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Create balenaEtcher.sh
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wattsy74
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balenaEtcher.sh
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240
balenaEtcher.sh
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#!/bin/sh
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####################################################################################################
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# #
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# ABOUT THIS PROGRAM #
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# #
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# NAME #
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# balenaEtcher #
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# #
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# SYNOPSIS #
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# sudo balena-etcher.sh #
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# #
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####################################################################################################
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# #
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# HISTORY #
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# Version: 1.0 #
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# #
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# - 1.0 Martyn Watts, 30.09.2021 Initial Build #
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# #
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####################################################################################################
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####################################################################################################
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# Program Variables #
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####################################################################################################
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# The version of this script, it is used in the logs so you can see which version of the script has
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# been used and will help with script debugging
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scriptver="1.0"
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# The url of the webpage to scrape for the latest version number and download link.
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releaseNotesUrl='https://github.com/balena-io/etcher/blob/master/CHANGELOG.md'
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# Installation Method, are we using a DMG or PKG to install the app?
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installMethod="DMG"
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# This is the name of the file we download this might be a dmg or a pkg.
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dnldfile='balenaEtcher.dmg'
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# The name of the application once it is installed without the .app extension
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appName='balenaEtcher'
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# The variable to hold the architecture type
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architecture=$(/usr/bin/arch)
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# Do we want to force quit the existing application before updating
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forceQuit='Y'
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# The 2 Log files we create as were progressing through the script
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# logfile is the main log which has each step and any errors sent to it
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# deplog is used to update the depnotify application with statuses and increments the progress bar
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logfile="/Library/Logs/balenaEtcherInstallScript.log"
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deplog="/var/tmp/depnotify.log"
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####################################################################################################
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# Script Startup #
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####################################################################################################
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# Create log files if they don't exist
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if [[ ! -e ${logfile} ]]; then
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/bin/echo "---- New Log ----" >> $logfile
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fi
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if [[ ! -e ${deplog} ]]; then
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/bin/echo "---- New Log ----" >> $deplog
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fi
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# Open the log files if the openconsole parameter has been passed to the script
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if [[ $@ == "openconsole" ]]; then
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open ${logfile}
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open ${deplog}
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fi
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# Log the script version and date
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/bin/echo "`date`: Running script version: ${scriptver}" >> ${logfile}
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####################################################################################################
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# Gathering the latest version number #
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####################################################################################################
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# To get just the latest version number from the Release Notes URL
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/bin/echo "`date`: Getting latest version number" >> ${logfile}
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/bin/echo "Getting latest version number"
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latestver=$(curl -s ${releaseNotesUrl} | grep 'title="v' | cut -f4 -d'"' | sed -e 's/[a-zA-Z]//' )
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####################################################################################################
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# Gathering the download url #
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####################################################################################################
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# To get the latest download link from the Release Notes URL
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/bin/echo "`date`: Getting download url" >> ${logfile}
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/bin/echo "Getting download url"
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if [[ $architecture == "arm64" ]]; then
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echo "Running Apple Silicon Setting correct URL"
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downloadUrl="https://github.com/balena-io/etcher/releases/download/v${latestver}/balenaEtcher-${latestver}.dmg"
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else
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echo "Running Intel Setting correct URL"
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downloadUrl="https://github.com/balena-io/etcher/releases/download/v${latestver}/balenaEtcher-${latestver}.dmg"
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fi
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# Display the latest version available in the logs
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/bin/echo "`date`: Latest version number is: ${latestver}" >> ${logfile}
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/bin/echo "Latest version number is: ${latestver}"
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####################################################################################################
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# Check to see if app already installed and get the version if it is #
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####################################################################################################
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# Is the app already installed?
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if [[ -e "/Applications/${appName}.app" ]]; then
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# Read the version number from the info.plist
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currentinstalledver=`/usr/bin/defaults read "/Applications/${appName}.app/Contents/Info" CFBundleShortVersionString`
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# Display the current installed version number in the logs
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/bin/echo "Current installed version is: $currentinstalledver"
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/bin/echo "`date`: Current installed version is: $currentinstalledver" >> ${logfile}
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# Check to see if the latest available version is the same as the installed version
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if [[ ${latestver} = ${currentinstalledver} ]]; then
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/bin/echo "${appName} is current. Exiting"
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/bin/echo "`date`: ${appName} is current. Exiting" >> ${logfile}
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/bin/echo "Status: ${appName} is current. Exiting" >> ${deplog}
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exit 0
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fi
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else
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# update the logs to indicate that app is not already installed
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currentinstalledver="none"
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/bin/echo "${appName} is not installed"
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/bin/echo "`date`: ${appName} is not installed" >> ${logfile}
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fi
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####################################################################################################
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# Compare the two versions, if they are different or the App is not present then download and #
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# install the new version. #
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####################################################################################################
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# Check to see if the versions do not match
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if [[ "${currentinstalledver}" != "${latestver}" ]]; then
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# Display current and available versions in the logs
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/bin/echo "`date`: Current ${appName} version: ${currentinstalledver}" >> ${logfile}
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/bin/echo "Current ${appName} version: ${currentinstalledver}"
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/bin/echo "`date`: Available ${appName} version: ${latestver}" >> ${logfile}
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/bin/echo "Available ${appName} version: ${latestver}"
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# Download the file
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/bin/echo "`date`: Downloading newer version." >> ${logfile}
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/bin/echo "Downloading newer version."
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url=$(curl -Ls -o /dev/null -w %{url_effective} ${downloadUrl})
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/usr/bin/curl -s -o /tmp/${dnldfile} ${url}
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# Force quit the application
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if [[ "${forceQuit}" = "Y" ]]; then
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killall ${appName}
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fi
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####################################################################################################
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# Choose the correct installation method. #
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####################################################################################################
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if [[ "${installMethod}" = "DMG" ]]; then
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# Mount the DMG
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/bin/echo "`date`: Mounting installer disk image." >> ${logfile}
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/usr/bin/hdiutil attach /tmp/${dnldfile} -nobrowse
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# Copy the file to the Applications folder - you may need to change the mounted volume name
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/bin/echo "`date`: Installing..." >> ${logfile}
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ditto -rsrc "/Volumes/${appName} ${latestver}/${appName}.app" "/Applications/${appName}.app"
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/bin/sleep 10
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# Unmount the DMG
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/bin/echo "`date`: Unmounting installer disk image." >> ${logfile}
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/usr/bin/hdiutil detach $(/bin/df | /usr/bin/grep ${appName} | awk '{print $1}') -quiet
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/bin/sleep 10
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else
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# Open the PKG with installer
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cd /tmp
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/usr/sbin/installer -pkg ${dnldfile} -target /
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fi
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# Clean up after the installation
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/bin/sleep 5
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/bin/echo "`date`: Deleting the downloaded file." >> ${logfile}
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/bin/rm /tmp/${dnldfile}
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####################################################################################################
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# Check to see if the update was successful. #
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####################################################################################################
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# Get the version of the app from the info.plist
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newlyinstalledver=`/usr/bin/defaults read "/Applications/${appName}.app/Contents/Info" CFBundleShortVersionString`
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# Compare the installed version against the latest version
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if [[ "${latestver}" = "${newlyinstalledver}" ]]; then
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/bin/echo "`date`: SUCCESS: ${appName} has been updated to version ${newlyinstalledver}" >> ${logfile}
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/bin/echo "SUCCESS: ${appName} has been updated to version ${newlyinstalledver}"
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# If dockutil is installed remove existing dock icon and add new one
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if [[ -e "/usr/local/bin/dockutil" ]]; then
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/bin/echo "`date`: Removing Existing Dock Icon." >> ${logfile}
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/bin/echo "Removing Existing Dock Icon."
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/usr/local/bin/dockutil --remove "${appName}" --allhomes >> ${logfile}
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/bin/sleep 5
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/bin/echo "`date`: Creating New Dock Icon." >> ${logfile}
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/bin/echo "Creating New Dock Icon."
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/usr/local/bin/dockutil --add "/Applications/${appName}.app" --position 1 --allhomes >> ${logfile}
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/bin/sleep 3
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fi
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# Update log with Failed install and exit with exit code 1
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else
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/bin/echo "`date`: ERROR: ${appName} update unsuccessful, version remains at ${currentinstalledver}." >> ${logfile}
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/bin/echo "ERROR: ${appName} update unsuccessful, version remains at ${currentinstalledver}."
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/bin/echo "---- End of script ----" >> ${logfile}
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exit 1
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fi
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# App is up to date already so we log it.
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else
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/bin/echo "`date`: ${appName} is already up to date, running ${currentinstalledver}." >> ${logfile}
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/bin/echo "${appName} is already up to date, running ${currentinstalledver}."
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fi
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# Update log so show end of script
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/bin/echo "---- End of script ----" >> ${logfile}
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# Update DEP Notify to increment the progress bar - when used with multiple scripts
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/bin/echo "Command: DeterminateManualStep: 1" >> ${deplog}
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#Exit script with exit code 0
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exit 0
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