openssl x509 -noout -subject -in server.pem

certtool -i < whatever.pem | egrep "^s+Subject:"

X.509 Certificate Information:
    Version: 3
    Serial Number (hex): 01
    Issuer: [...] CN=unixandlinux.ex  <- Not this one.
    Validity: ...
    Subject: CN=goldilocks

certtool d myfoo.crt

Common Name     : Foobar