Did you ever deleted some important files and panicked on how to recover it? On Linux there is Foremost that can come to the rescue.
Not many users know that deleting a file from a file manager or with ‘rm’ from a terminal is not enough to really remove it from your hard disk; these methods simply remove the “link” that map the hard drive area that is containing the file to the file system record for the file in question, but that hard drive area will continue to contain the file data until the file system decides to reuse the area for a new file.
Foremost can analyze a specific directory or the entire hard drive looking for any deleted files to recover; it also allow to select the file type to search.
Linux
How to change Ubuntu DNS
For most users the DNS servers provided by their ISP may suffice, but some user may need DNS that are faster, safer and with far fewer restrictions for online browsing.
To change the DNS servers in Ubuntu, you need to modify the file ‘dhclient.conf’.
Check for LCD dead pixels on Linux with LCD Nurse
One of the major problems encountered with LCD monitors is the “dead pixels”: all of a sudden we start to see white or black dots that remain visible regardless of what we are displaying.
Fortunately this kind problem is covered by any major monitor warranty and if we start to notice those dead pixels in time before the warranty is over, we can ask for a RMA. But there is one catch before we can send the monitor to the manufacturer: are we sure that those apparently dead pixels are indeed hardware-ly dead and it is not just a bug in the graphics card drivers or in the operating system itself?