Ubuntu/Debian:

  1. Install: sudo apt install unattended-upgrades

  2. Enable: sudo dpkg-reconfigure --priority=low unattended-upgrades

CentOS/RHEL:

  1. Install: sudo yum install dnf-automatic

  2. Edit config: /etc/dnf/automatic.conf

  3. Enable timer: sudo systemctl enable --now dnf-automatic.timer

Keeping your system patched reduces vulnerability to known exploits.

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