post_install() { [ -x /usr/bin/update-desktop-database ] && /usr/bin/update-desktop-database > /dev/null 2>&1 } post_upgrade() { post_install $1 } post_remove () { [ -x /usr/bin/update-desktop-database ] && /usr/bin/update-desktop-database > /dev/null 2>&1 } op=$1 shift $op $*