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This tutorial explains how to secure your Dropbox files with Truecrypt in Ubuntu (or Linux Mint). It assumes you know Truecrypt already and have a basic understanding of the Unix folderstructure.

Why securing your files in Dropbox?

I use Truecrypt for keeping my personal files. Basically all my important files are in a 50GB volume. My Dropbox folder was located inside the Truecrypt volume.

Like this:


I wasn’t satisfied with the system. Who knows what happens with your data when you submit it to Dropbox. A hacker could get access to my account, or a Dropbox-employee or the government (not all stories are conspiracies).

There wasn’t really a point of securing my data with Truecrypt, when everything inside the Truecrypt-volume was copied to “the cloud”.

What even bugged me more were the credentials on my filesystem. Some folders need different credentials (www-root, root-owned files, mysql-files). When Dropbox faces a file it can’t access, it keeps on indexing and consuming cpu.

How does it work?

I came up with the following script:

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