$ cp /root/<my-certification-file>.crt /etc/pki/ca-trust/source/anchors/
$ update-ca-trust
$ cp /<my-certification-file>.crt /usr/local/share/ca-certificates/
$ mv /<my-certification-file>.crt /usr/share/ca-certificates/
$ update-ca-certificates --fresh
$ cp /<my-certification-file>.crt /usr/local/share/ca-certificates/
$ mv /<my-certification-file>.crt /usr/share/ca-certificates/
$ update-ca-certificates --fresh
Same as Ubuntu but if you see the message below
“WARNING: ca-certificates.crt does not contain exactly one certificate or CRL: skipping”
Looks like it’s not done but it’s done.