How to disable automatic upgrades on Ubuntu 20.04
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To disable automatic upgrades on Ubuntu 20.04 from the command line, you need to modify the configuration file /etc/apt/apt.conf.d/20auto-upgrades. You can do this by using a text editor like nano or by directly echoing the new configuration into the file. Here's how to do it: First, open the terminal. Check the current settings of the 20auto-upgrades file: cat /etc/apt/apt.conf.d/20auto-upgrades You may see something like this: APT::Periodic::Update-Package-Lists "1"; APT::Periodic::Unattended-Upgrade "1"; The Update-Package-Lists setting controls the automatic updates check, while the Unattended-Upgrade setting controls the automatic installation of security updates. To disable automatic updates, set both values to "0": You can either edit the file using a text editor like nano: sudo nano /etc/apt/apt.conf.d/20auto-upgrades Change the values to "0": APT::Periodic::Update-Package-Lists "0"; APT::Periodic::Unattended-Upgrade "0"; Save the file and exit the editor (Ctrl + X, then press Y, and then Enter). Or, you can directly echo the new configuration into the file: echo 'APT::Periodic::Update-Package-Lists "0";' | sudo tee /etc/apt/apt.conf.d/20auto-upgrades echo 'APT::Periodic::Unattended-Upgrade "0";' | sudo tee -a /etc/apt/apt.conf.d/20auto-upgrades Now, the automatic updates should be disabled. To verify the new settings, run: cat /etc/apt/apt.conf.d/20auto-upgrades You should see both values set to "0".