Whatever happens, an OS must be kept up-to-dated periodically. However, spending time on this may be needed extra time. So, defining an automatic process can be helpful. To provide this the below commands can be enough.
🔥 This note contains some commands tested on the Linux Mint 20.3 Xfce Edition. The different editions and versions may need extras.
fatihtatoglu@fth-linux:~$ sudo vim /etc/crontab
The below line must be added to the bottom of the file.
@reboot root (/usr/bin/apt update -q -y >> /var/log/apt/cronupdate.log) && (/usr/bin/apt upgrade -q -y >> /var/log/apt/cronupdate.log) && (/usr/bin/apt autoclean -q -y >> /var/log/apt/cronupdate.log) && (/usr/bin/apt autoremove -q -y >> /var/log/apt/cronupdate.log)
Then restart the server.
fatihtatoglu@fth-linux:~$ sudo reboot
An explanation of the command is that, as a root user applies update, upgrade, autoclean, and autoremove commands. With those commands, the server checks and applies updates at every start of the OS.