This is just as a reminder for myself, as I keep forgetting about this stuff.
If like me you run a server with services that depends on SSL and need to install a certificate issued by a Certificate Authority (CA) like CACert, this might be interesting to you as well.
On Red Hat based systems the CA certificate for SSL is usually installed in the /etc/pki/tls/certs directory. The certificate is basically just dropped there in a file which name is its hash – built with the openssl program.
I wrote the shell scriptlet http://dodji.seketeli.net/install-ca-cert.txt. Download it, save it as install-ca-cert.sh and turn it into an executable.
Then, assuming your certificate is in a file named your-ca.crt, install it by doing:
sudo ./install-ca-cert.sh ./your-ca.crt
Voila. I don't know how that works on other distributions, though.