Welcome to PC✗3

Hi, I’m Stefan Pejčić. I am a virtualization architect, system administrator, WordPress plugin developer, cPanel partner and Python developer.

In my 10+ years of working in IT I’ve concluded one thing:
 technology is easy, it’s the people that are hard.

Everybody takes IT folks for granted, only noticing them when something is not working. And when those situations happen, we either come up with a quick solution or use a strategy that worked in the past. PCx3 is a blog that provides exactly that: How To's and hacks that worked for me, and hopefully they'll help other sysadmins as well.

Thank you for stopping by.

Latest articles

Copyright David Farrell 2014

wget not working on Linux 😲

wget not working? Add user/agent, for example: Mozilla/5.0 wget -U Mozilla/5.0 or wget -U mozilla By default wget uses an uncommon user-agent Wget/VERSION, which due to various security policies some servers are blocking. To solve this, specify the...

du and df show different sizes

ncdu / du and df show different sizes: du is reading information from the directory tree, it is more accurate than df but slower.df reads meta data of the file system therefore it is faster, but not that accurate because it works with blocks...

Set default Timezone via htaccess in cPanel

Here in how to change the default Time Zone permanently in cPanel using the .htaccess file Step 1. First, check you current time yone settings using a simple .php script like this: <?php echo "Today is " . date("Y/m/d") . "<br>"; echo "The...

PHP Script to check for open ports

Here is a simple PHP script that you can use to test if a port is open on the server or not. <?php $host = $_SERVER['SERVER_ADDR']; $ports = array(21, 25, 80, 81, 110, 443, 3306); foreach ($ports as $port) { $connection = @fsockopen($host...

How to Whitelist a domain name in CSF

If you use dynamic DNS privately and need to whitelist a hostname or domain name in cPanel/WHM, you can use the DYNDNS feature of ConfigServer Security and Firewall plugin. csf.dyndns is a file that is specifically used for allowing hostnames in CSF...