OpenSSL Usage
Display certificate request:
openssl req -noout -text -in /etc/apache2/ssl/server2007.csr
Display to whom it was issued from PEM file:
openssl x509 -noout -in imapd.pem -subject
Display certificate:
openssl x509 -noout -text -in /etc/apache2/ssl/server2007.crt
Create key:
openssl genrsa 2048 > www.linuxia.de.key
Create certificate request from existing key:
openssl req -new -key www.linuxia.de.key -out server2007.csr
For more information, check the OpenSSL Command-Line HOWTO.