As we have seen, simply deleting a file with a file manager or with ‘rm’ is not enough to really remove it from your hard disk and it is still possible to recover a deleted file.
Good news if you delete a file accidentally, but what can you do if you are in the opposite situation and you actually need to make sure that the file you are deleting doesn’t have chance to be recovered?
Fortunately in Linux there are some tools dedicated to totally erasing the file data: Shred and Wipe
Linux
How to fix the Heartbleed bug on your Linux Server
In the last few days a serious bug, nicknamed Heartbleed, has been found in the cryptographic software library OpenSSL.
This bug allows any ill-intentioned hacker to read the memory of the systems with the vulnerable versions of the OpenSSL software installed; with this kind of access an attacker can read the secret keys used to encrypt the traffic to the server including the usernames and passwords of the users and the actual content.
Fortunately only the 1.0.1 series (up to 1.0.1f) and 1.0.2-beta series (up to 1.0.2-beta1) of OpenSSL are affected by the Heartbleed bug.
How to play DVD on Ubuntu
Surely most of you have some, if not many, movies on DVD and you are used to watch them on the PC.
Unfortunately, due to licensing Ubuntu is released only with free codecs for multimedia playback and therefore it requires few additional steps to have the codecs for proprietary formats (DVD, mp3, avi, etc.).