PREIN

/bin/sh

if [ $1 -gt 1 ]; then
    # Upgrade => deregister old extension
    unopkg remove --shared `grep -s identifier /usr/lib/openoffice.org/extensions/presenter-screen.oxt/description.xml | cut -d '"' -f 2` > /dev/null 2>&1 || :
fi

PREUN

/bin/sh

if [ $1 -eq 0 ]; then
    # not upgrading => deregister
    unopkg remove --shared `grep -s identifier /usr/lib/openoffice.org/extensions/presenter-screen.oxt/description.xml | cut -d '"' -f 2` > /dev/null 2>&1 || :
fi

POSTIN

/bin/sh

    # register extension
    unopkg add --shared --force --link /usr/lib/openoffice.org/extensions/presenter-screen.oxt > /dev/null 2>&1 || :

POSTUN

/bin/sh

    # clear disk cache
    unopkg list --shared > /dev/null 2>&1 || :