Changes
install certificates from command line
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].
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