POSTIN

/bin/sh

if [ -x /usr/bin/update-desktop-database ]; then 
/usr/bin/update-desktop-database /usr/share/applications > /dev/null || 
true ; fi

POSTUN

/bin/sh

if [ "$1" = "0" -a -x /usr/bin/update-desktop-database ]; then 
/usr/bin/update-desktop-database /usr/share/applications > /dev/null || true ; fi