$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/c/Users/emanuel.couto/.ssh/id_rsa): id_rsa
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in id_rsa.
Your public key has been saved in id_rsa.pub.
The key fingerprint is:
SHA256:mB0CkvOWA6YOr5RRnzN+bN0+Jsr7V6n7cS1w2beyNsg emanuel.couto@pwecouto01
The key's randomart image is:
+---[RSA 2048]----+
|  ...            |
|  =o .           |
| o.+..o .        |
|o.  == = .     o |
|o.o...* S . . + o|
| +.  . + . . =  +|
|..    o   o +o.o.|
|.     .  . E o=. |
|       ++.+.=o.  |
+----[SHA256]-----+

$ cat id_rsa
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

$ ssh-keygen -f id_rsa -e -m pem
-----BEGIN RSA PUBLIC KEY-----
MIIBCgKCAQEAsoGXdarRCouoMkJDtZHqnJwdHz6M1e8ZbZmJaP3Fg44oDcg1LIy6
w0jqYBKlI9PMYT6FsErxroLJX+2412k/PvZ0zKE9eUQn4/XVMZ6GfpKNA89fhCPw
wCfW3Oo+Pv9wO+6a+FTo0yeCGSpGpXrwCbFqlxkZDrhkMAiJfDa0uRx18eFYHoyt
5NFxfe4Hih7EUKEX8C0De+q1inawTqkFjFwETBRw+c4KEX2O5L/GJVx+1fXTcaeN
vRbGq5kN9IskD1OKu1JH3rF49f036U/g55pSkcB/uWsW9GpUSYbSs6GRBJnbRnP4
HfbUqcBepMGdeu1SwjTEKteQoIS1q+LxiwIDAQAB
-----END RSA PUBLIC KEY-----