The meaning of etc directory in Ubuntu 32 bit
 

I've installed Ubuntu 32 bit as a VM under Oracle VirtualBox. This massive directory (etc) was preset, so I assume it holds some commands or API's important for the OS. What are they?

Thanks, - AlexBB

That directory is where most system configuration is stored.

The /bin and /sbin directories are where you find the system executable files.

The /etc is a directory you should back up before you upgrade or re-install a system.

Thank you, camorri. But the backup is done by the VirtualBox, actually.

If you re-install, new instantiation, or upgrade, your config files are in /etc. What you need after the fact, is access to your config files. It makes it a much easier task to copy your working configs, to the new installation, rather than having to re-edit the default files, to make a working installation. Its up to you how you back things up. Just make sure you can access files such as /etc/fstab ( just an example ) from your backup.

FWIW, I usually make a copy of /etc, store it in my /home/user/ directory, upgrade, and I do not format my /home partition. Then the old config files are easily available.

Don't want to make a big deal out of this, but you do have to think ahead.

Again, thank you, camorri. It is very helpful.

You are welcome.