How to export the all intermediate certs including root certificates using keytool only

Question

I am Trying to configure SSL and got the .pfx file from server team. The Certificate chain length: 2

When i am trying to export the certificate chain using keytool, only

Answer 1

This works in Java 8 to export the whole certificate chain to a file:

keytool -list -alias yourcert -keystore /path/to/keystore -rfc

Same format as export except it dumps the whole chain. You lose out on the -file option, but you can simply redirect to a file using >

Answer 2

keytool -list -rfc -keystore serverauth.jks

This will output all the certs in a single stream. If you wanted to split them into separate files, you'd have more work to do.

Answer 3

You could do (exemple with java cacert):

for cert in `keytool -list -keystore cacerts -storepass changeit | grep trustedCertEntry | grep -Eo "^[^,]*"`;do
    `keytool -exportcert -keystore cacerts -alias $cert -file ${cert}.crt <<< $'changeit'`
done

That will export all cert in a separated .crt file