POSTIN

/bin/sh

if [ -x /usr/bin/update-menus ]; then /usr/bin/update-menus || true ; fi 

update-mime-database /usr/share/mime > /dev/null
update-desktop-database /usr/share/applications/

POSTUN

/bin/sh

if [ "$1" = "0" -a -x /usr/bin/update-menus ]; then /usr/bin/update-menus || true ; fi 

update-mime-database /usr/share/mime > /dev/null
update-desktop-database /usr/share/applications/