How to Create Partition Image Backup and Restore Using Clonezilla
Image backup is a process which creates a copy of a disk partition or the entire disk. The result is a single file that is called an "image". This is…
How to Display Grub Menu at Boot Time in Ubuntu
In Ubuntu, Grub boot menu is hidden by default. You can display it by pressing "SHIFT" continuously at boot time. This is useful (among other cases) in case you want…
When to Restart Services or Reboot after Update on Debian or Ubuntu
After update Debian (or Ubuntu) using apt-get update && apt-get -V upgrade you need to know which services need restart and if system reboot is required (kernel upgrade). A common…
A Simple Guide to Obtain and Install an SSL Certificate
More and more companies use SSL certificates (small data files that digitally bind a cryptographic key) to protect their customers sensitive data, as username, password and credit card number, as…
Upgrade Debian 7 Wheezy to 8 Jessie
One of the advantages of Debian operating system is the ability to live update a production server from current to next release. Under normal circumstances you do not have to…