Answer
The package ecryptfs-utils
is available in the universe
repository.
To enable the universe repo, do the following:
sudo add-apt-repository universe
sudo apt update
sudo apt install ecryptfs-utils
Further explanation:
Looking up packages
You can look up packages at https://packages.ubuntu.com/ Make sure you select the correct distribution (in your case Bionic, which corresponds to 18.04).
When you search for ecryptfs-utils
you get the following:
Package ecryptfs-utils
[bionic (18.04LTS)][1] (misc): ecryptfs cryptographic filesystem (utilities) [universe]
111-0ubuntu5: amd64 arm64 armhf i386 ppc64el s390x
As you can see, the package is available for 18.04 in the universe
repository. You enable universe
via the above-mentioned steps.
Repositories
A repository (oftentimes abbreviated to repo) is the name Ubuntu gives to an archive where software is stored. Ubuntu uses four main repositories:
- Main
- Universe
- Restricted
- Multivers
The universe
repository contains "Community-maintained free and open-source software". For more info, see: https://help.ubuntu.com/community/Repositories/Ubuntu