Apt-get not finding packages

On a freshly installed Ubuntu system, apt-get may not have bothered to download its list of packages. This can lead to the confusing position of ‘E: Unable to locate package X‘ on almost everything. Fix this by entering:

sudo apt-get clean
sudo apt-get update

Packages should then be visible and installable via the usual command:

sudo apt-get install X

If you’re not sure on the package name, search for it using:

apt-cache search X

If you still cannot find the software you’re after you may of course need to add additional repositories.

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