For the people that don't know, MEGA is a Dropbox alternative, with 50GB of free storage, available for Mac, Windows and Linux, created by Kim Dotcom.
Download the Mega Sync Client for Linux. Open the terminal in the directory you downloaded the deb files, then Copy/Paste the following code:
sudo dpkg -i megasync-xUbuntu_14.04_amd64.deb. After that start mega from the Dash, from there one it will start up at login. Also note that the deb file also adds a ppa in your sources list. Meaning future updates, you will get via your Software Updater.
sudo add-apt-repository ppa:otto-kesselgulasch/mega
sudo apt-get update
sudo apt-get install megasync
Here are some features that are touted by Mega:
- Your data is encrypted end to end. Nobody can intercept it while in storage or in transit.
- Sync any folder from your PC to any folder in the cloud. Sync any number of folders in parallel.
- Take advantage of MEGA's high-powered infrastructure and multi-connection transfers.
- Store up to 50 GB for free!
Which I am the author of.
As stated in other file-sharing-service answers, synchronisation is not backup (tldr: risk of synchronising corrupted/deleted files, particularly if no file-versioning available). The key to decrypt the encrypted data at Mega is secured and accessed by your account credentials (kept remotely but encrypted also), so as long as you still have login access/a user you shared the files to can login, the files won't be lost unless synchronised versions are overwritten by bad data.