Changes

Mozilla Calendar/Lightning for Thunderbird (global)

<source lang="xml">

<package id="lightning" name="Mozilla Lightning" revision="1" reboot="false" priority="1" timeout="100">

<remove cmd='cmd /c echo "How uninstall ONLY add-on?"'/>

</package>

and for lightning 0.8

</package>

</source>

== Removing an extension ==

The xpi file must reside on a local disk or on a network share (drive letter). It can't be installed from the network.

== Installing X.509 certificates ==

With Mozilla's Network Security Services (NSS) it is also possible to install certificates from the command line. I am not sure if it fits in here since these are not managed per-machine but per-user (or per-profile).

But if you are looking for a way to deploy a CA-cert you can use [http://mschuette.name/wp/2008/06/09/mozilla-x509-certificates-from-the-command-line/ my batch script].