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Read more about the article How to Create Partition Image Backup and Restore Using Clonezilla
What did the cloned sheep say to the other sheep?

How to Create Partition Image Backup and Restore Using Clonezilla

  • Post author:Christos Pontikis
  • Post published:November 24, 2016
  • Post category:Backup
  • Reading time:20 mins read

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…

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Read more about the article How to Display Grub Menu at Boot Time in Ubuntu
Credits

How to Display Grub Menu at Boot Time in Ubuntu

  • Post author:Christos Pontikis
  • Post published:October 25, 2016
  • Post category:Linux Administration
  • Reading time:2 mins read

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…

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Read more about the article When to Restart Services or Reboot after Update on Debian or Ubuntu
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When to Restart Services or Reboot after Update on Debian or Ubuntu

  • Post author:Christos Pontikis
  • Post published:October 19, 2016
  • Post category:Linux Administration
  • Reading time:3 mins read

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…

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Read more about the article A Simple Guide to Obtain and Install an SSL Certificate
Data key

A Simple Guide to Obtain and Install an SSL Certificate

  • Post author:Christos Pontikis
  • Post published:September 7, 2015
  • Post category:Linux Administration
  • Reading time:18 mins read

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…

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Read more about the article Upgrade Debian 7 Wheezy to 8 Jessie
Jessie and Wheezy at Debian Dinner

Upgrade Debian 7 Wheezy to 8 Jessie

  • Post author:Christos Pontikis
  • Post published:August 24, 2015
  • Post category:Linux Administration
  • Reading time:15 mins read

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…

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