$ sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain ca.crt
$ sudo security add-trusted-cert -d -r trustRoot -k ~/Library/Keychains/login.keychain ca.crt
$ sudo security add-trusted-cert -d -r trustRoot -k /Library/Keychains/System.keychain ca.crt
$ sudo security add-trusted-cert -d -r trustRoot -k ~/Library/Keychains/login.keychain ca.crt