Should I add certificates to /usr/share/ca-certificates?

I try to automate to adding a certificate on an Ubuntu server 14.04 with puppet or a one liner command. I added certificates manually with these commands : mkdir /usr/share/ca-certificates/extra cp toto.crt /usr/share/ca-certificates/extra/toto.crt sudo dpkg-reconfigure ca-certificates I tried the command : update-ca-certificates but it didn't update my /etc/ssl/certs/ca-certificates.crt. I tried too the command : sudo dpkg-reconfigure ca-certificates (with and without the option -f noninteractive) but i can't to accept all my certificates automatically.