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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 How to Start Youtube Playlist from Random Video
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How to Start Youtube Playlist from Random Video

  • Post author:Christos Pontikis
  • Post published:August 6, 2014
  • Post category:Social Media
  • Reading time:1 mins read

If you want to start a Youtube playlist from random video, just add: &index=random_number to the src attribute of the embed code. The code To produce a random number, I…

Continue ReadingHow to Start Youtube Playlist from Random Video
Read more about the article Get basename and file extension with PHP or Javascript
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Get basename and file extension with PHP or Javascript

  • Post author:Christos Pontikis
  • Post published:August 6, 2014
  • Post category:Web Development
  • Reading time:4 mins read

Getting file extension and basename is a common development task. PHP internal function pathinfo is very useful. But, Windows paths will not work correctly on Linux servers and vice versa.…

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Read more about the article Easily Backup Virtualbox disks using Immutable Images
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Easily Backup Virtualbox disks using Immutable Images

  • Post author:Christos Pontikis
  • Post published:December 9, 2013
  • Post category:Backup
  • Reading time:4 mins read

Virtual disks (Virtualbox in our case) are very large files, that may change frequently. This is a big problem for backup. A little change (even a simple boot of virtual…

Continue ReadingEasily Backup Virtualbox disks using Immutable Images
Read more about the article How to check if a Request is AJAX call with PHP
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How to check if a Request is AJAX call with PHP

  • Post author:Christos Pontikis
  • Post published:December 9, 2013
  • Post category:Web Development
  • Reading time:2 mins read

It is useful to prevent direct access of AJAX calls (from browser address bar). A solution could be the following simple function check_is_ajax(): /** * Check if request is an…

Continue ReadingHow to check if a Request is AJAX call with PHP
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