Linux Comand: Find SSH client Version

 Sometimes it may be necessary to identify the SSH client that you are currently running and it’s corresponding version number. Use ssh –V to identify the version number. Please note that Linux comes with OpenSSH.

The following examples indicates that this particular system is using OpenSSH:
Syntax
root@vps10634 [~]# ssh -V
OpenSSH_5.3p1, OpenSSL 1.0.0-fips 29 Mar 2010