I issue the following command follwing a command line instruction book,
$ ssh remote-sys ssh: Could not resolve hostname remote-sys: nodename nor servname provided, or not known
To be cuirious, I refered to it's manual
$ man ssh AUTHORS OpenSSH is a derivative of the original and free ssh 1.2.12 release by Tatu Ylonen. Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo de Raadt and Dug Song removed many bugs, re-added newer features and created OpenSSH. Markus Friedl con- tributed the support for SSH protocol versions 1.5 and 2.0. BSD March 30, 2018 BSD
It's the latest version of today (March 30, 2018).
It seems to be updated automatically,
Is that normal?