How to upgrade OpenSSH 7.0 to 7.2 on a OpenBSD Unix and Linux

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The steps to upgrade OpenSSH from version 7.0 to 7.2 on an OpenBSD or Linux system depend on the specific operating system and distribution you are using, as well as how OpenSSH was installed.

Here’s a general outline of the steps to upgrade OpenSSH on a Unix or Linux system:

  1. Check the currently installed version of OpenSSH:
    ssh -V
  2. Download the latest version of OpenSSH from the OpenSSH website or your operating system’s package repository.
  3. Backup your existing OpenSSH configuration files, typically located in the /etc/ssh directory, to prevent any loss of data during the upgrade process.
  4. Stop the OpenSSH server:
    sudo service ssh stop
  5. Uninstall the existing OpenSSH package:
    sudo apt-get remove openssh-server

    or

    sudo pkg_delete openssh-server

    Replace apt-get with the package manager for your Linux distribution, such as yum or dnf, and replace pkg_delete with the package manager for your OpenBSD system.

  6. Install the new version of OpenSSH:
    sudo apt-get install openssh-server

    or

    sudo pkg_add openssh-server
  7. Restore the backed-up OpenSSH configuration files.
  8. Start the OpenSSH server:
    sudo service ssh start
  9. Verify that the OpenSSH server is running the correct version:
    ssh -V

Note: The exact steps may vary depending on the operating system and distribution you are using, and you should consult the documentation for your specific setup for more information. Additionally, it is always a good idea to backup important data and make a backup of your system before performing an upgrade.

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