opensslFun.sh

# set a var name
mycertfile=<mycertfilename>

# to decrypt the private key
# this will ask you for a password
openssl pkey -outform PEM -in $mycertfile

# get all the nodes from pks file type
openssl pkcs12 -in $mycertfile -nodes

# decode the cert details
openssl x509 -in $mycertfile -text -noout
# including the location of the cert chain
openssl x509 -in $mycertfile -text -noout | grep 'CA Issuers - URI:'

# convert crt to pem cert chain
openssl x509 -in $mycertfile -inform der -outform PEM #-out $mycertfile.pem

# to export your encrypted private SSH key
openssl rsa -in ~/.ssh/jayers_rsa -out ~/.ssh/jayers_d_rsa