Just run the command below
keytool -list -v -keystore <keystore-file>
and replace <keystore-file> with your keystore file. You can go directly to the folder and run
keytool -list -v -keystore mykeystore.keystore
or you can specify the path like
keytool -list -v -keystore ~/path/to/my/keystore/mykeystore.keystore