post_install()
{
    ln -svf  /etc/canal/cando.dbc /srv/http/config/cando.dbc
}

post_upgrade()
{
     ln -svf  /etc/canal/cando.dbc /srv/http/config/cando.dbc
}

pre_remove()
{
    rm -f /srv/http/config/cando.dbc
}