Version Control

Updating our update infrastructure. Currently things are pretty dumb, run system updates -> restart. The new system will take into account user authorization and will check for other updates to run: Browsers, Java, Flash, Adobe, System. I want to make sure that any update installer I push out doesn't clobber a newer version or bother trying to reinstall the same version again. The rough cut is a simple preflight script for each of the applications we are trying to push out.

#!/bin/bash
## preflight
##
## Not supported for flat packages
#these are set by JAMF Composer
pathToScript=$0
pathToPackage=$1
targetLocation=$2
targetVolume=$3

applicationName="Example.app"

currentVersion=$(defaults read '/Applications/'$applicationName'/Contents/Info.plist' CFBundleShortVersionString | awk -F'\.' '{print $1}')
upgradeVersion="20"

if [ "$currentVersion" -ge "$upgradeVersion" ]; then
    echo "Already at or above installer version" 1>&2
    exit 1
fi

exit 0
exit 1 This will fail out the installer if their browser version is already at or past the version of the upgrade.