l downloads the certdata.txt file from Mozilla's source tree over HTTP, then parses certdata.txt and extracts certificates into PEM format.  By default, only CA root certificates trusted to issue SSL server authentication certificates are extracted. These are then processed with the OpenSSL commandline tool to produce the final ca-bundle file. 
<p class="level0">The default <span Class="emphasis">outputfile</span> name is <span Class="bold">ca-bundle.crt</span>. By setting it to '-' (a single dash) you will