curl SSL3_GET_SERVER_CERTIFICATE error fix

curl-ca-cert-import.txt

# I recently got the following error while using curl:
# curl: (60) SSL certificate problem, verify that the CA cert is OK. Details:
# error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

openssl s_client -connect www.whateverserver.com:443 |tee logfile
# then QUIT <RETURN>
# copy from BEGIN CERTIFICATE to END CERTIFICATE into /tmp/certstuff.pem
openssl x509 -inform PEM -in /tmp/certstuff.pem -text -out certdata
cat certdata
# in there, I saw this line:
# CA Issuers - URI:http://crt.comodoca.com/COMODOSSLCA.crt

wget http://crt.comodoca.com/COMODOSSLCA.crt

openssl x509 -inform DES -in COMODOSSLCA.crt -out COMODOSSLCA.pem -outform PEM

# at this point you should be able to append:
# --cacert COMODOSSLCA.pem
# to your original curl inquiry, and have it work without the error

# now install it permanently in ubuntu 12.04 -- note the file extension must be .crt to work
sudo cp COMODOSSLCA.pem /usr/local/share/ca-certificates/COMODOSSLCA.crt
sudo update-ca-certificates