I often use something along these lines:

!/bin/sh

for theDir in /Applications/Adobe Acrobat XI Pro /Library/Application Support/Adobe/Acrobat 11 AMT; do if [ -d "$theDir" ]; then /bin/rm -rf "$theDir" fi
done
cd /var/db/receipts
for thePkg in com.adobe.acrobat.11.viewer.app.pkg.MUI com.adobe.acrobat.11.viewer.preinstall.pkg.MUI com.adobe.acrobat.11.viewer.appsupport.pkg.MUI com.adobe.acrobat.11.viewer.browser.pkg.MUI com.adobe.acrobat.11.viewer.print_automator.pkg.MUI com.adobe.acrobat.11.viewer.print_pdf_services.pkg.MUI ch.cern.pkg.Acrobat_Pro; do echo "checking for Pkg $thePkg" if [ -f ${thePkg}.bom ]; then echo "forgetting Pkg $thePkg" /usr/sbin/pkgutil --forget "$thePkg" > /dev/null 2>&1 fi
done

for theFile in `/bin/ls com.adobe.acrobat.a11.AcrobatQfeUpd11*.bom 2>/dev/null` `/bin/ls com.adobe.acrobat.a11.AcrobatUpd110*.bom 2>/dev/null` `/bin/ls com.adobe.acrobat.a11.AcrobatSecUpd11*.bom 2>/dev/null` `/bin/ls com.adobe.acrobat.viewer.11*.bom 2>/dev/null`; do

echo "File: ${theFile}" thePkg=echo ${theFile}|sed s/.bom// echo "Pkg: ${thePkg}" /usr/sbin/pkgutil --forget "${thePkg}" > /dev/null 2>&1
done
```
You have to pay attention to the spaces in your path. For the language it is propably OK to use a wildcard (asterisk), for the users you probably have to define another loop. You might want to drop the echos, I find them useful to see in the log what has been removed. Error handling would be a nice option...

Ooops, I should learn how to do proper quoting in my replies ...