Converting a SSL certificate from CRT format to PEM

Some Linux applications (e.g. webmin and dovecot) require pem certificate files, to do this we use OpenSSL to convert them to pem.

Step 1: openssl x509 -in ssl.crt -out ssl.der -outform DER
Step 2: openssl x509 -in ssl.der -inform DER -out ssl.pem -outform PEM