See /tag/ssh

• rsync: Rsync over SSH

• Screen: Combining SSH and GNU Screen

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• pass password in bash script to SSH
• HowTo SSH/SCP without a password.
• OpenSSH Change a Passphrase With ssh-keygen command

• SSH Frequently Asked Questions

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• 2017-11-26 - OpenSSH_6.7p1 Debian-5+deb8u3, OpenSSL 1.0.1t 3 May 2016 on Devuan-1.0.0-jessie-i386-DVD

• 2017-11-26 - OpenSSH_7.4p1, OpenSSL 1.0.2k-fips 26 Jan 2017 on 3.10.0-714.10.2.lve1.4.63.el7.x86_64

Learning the version of SSH you have ∞

You'd think --version would work, but no:

\ssh  -V

Older version of ssh might do:

\ssh  -v  localhost

You could also check your package manager.