By kavisha
Hello,
Everytime i log in to my digital ocean droplet i get the below message: “209 packages can be updated. 104 updates are security updates.”
I had two questions wrt this: a. Is it required to keep updating the droplet? What are the security updates? Will doing these updates override the settings that i might have changed in the files?(For ex: i have made a few changes in nginx and tomcat files in the server).
b. Now i need to install Postfix for sending emails. I intend to follow the steps mentioned in this link and this. These links required the use of command : “sudo apt-get update”. Are these commands going to update all the existing packages that i have? And will these also override the settings that i might have changed in the files?(For ex: i have made a few changes in nginx and tomcat files in the server).
Thanks in advance, Kavisha.
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Updating packages normally does not overwrite config files and even if it did, they are usually coded to update your config file with your settings. But it is a good idea to take a snapshot of your droplet before doing any updates. And to update, you can run the following commands,
sudo apt-get update
sudo apt-get upgrade
There is a good introduction to apt-get that you can find here: https://syscoding.com/tutorials/2/basic-introduction-to-apt-get-ubuntu-debian/
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