Suppose you lost or misplaced your public key file. Now you only have your private key file and you need to generate public ssh RSA or DSA key to continue with ssh. Yes there is option to create public key using available private key in ssh
root# ssh-keygen -f ~/.ssh/id_rsa -y > ~/.ssh/id_rsa.pub
In above written command id_rsa in private key that generate public key id_rsa.pub
root# ssh-keygen -f ~/.ssh/id_rsa -y > ~/.ssh/id_rsa.pub
In above written command id_rsa in private key that generate public key id_rsa.pub
