This is a CSR generation script based on the original CAcert script.

You have to specify the metadata like this:

./csrgen.sh \
  -C DE \
  -S HH \
  -L Hamburg \
  -O "Silpion IT Solutions GmbH" \
  -G Peter \
  -N Tester \
  -n www.example.com \
  -a www.example.org \
  -a www.example.net

It will drop the PEM encoded key (extension .key) and CSR (extension .csr) in the data subdirectory of the current directory.