From the blog
Linux: Find and Kill Zombie Processes
Today we will learn about zombie processes. In particular, we will guide you to find and kill zombie processes on your Linux / Unix operating systems. What is a zombie process? On Linux / Unix operating systems, a defunc process (aka zombie process) is a system process that has completed its execution, however it still show on the…
Read More »Bandwidth limit exceeded error: how can I fix it?
Bandwidth limit exceeded error is often the most common web errors seen on cPanel powered websites. It happen often in the last days of the month, when lot of websites reach their bandwith limits. What does Bandwidth limit exceeded error mean? It means your website reached it’s bandwidth limit. The result is a suspension of the entire website, it…
Read More »How to Specify a Vary: Accept-Encoding header in Nginx?
A few days ago I was working optimizing one of our company blogs. I was using a public performance test tool to find out which aspects of the web performance I needed to improve to get better speed. One of the bottlenecks I found was this warning: Specify a Vary: Accept-Encoding header What does this mean? This means the…
Read More »Find the WordPress version from command line
Question: How Can I find the WordPress version from command line? Is there any way to get the WP version from the Linux terminal? Answer: Yes, you can find WordPress version from command line with just a simple command. Why should I need to know the WP version? Knowing your WordPress version is important to determine if you are safe from…
Read More »How can I block IP ranges using CSF Firewall?
CSF Firewall is one of the most complete server security suites around. It can help you to harden the security of your cPanel server up to the max. CSF is an iptables based firewall, and as such, it allows the server administrator to block offending incoming connections. One of the advanced things it allows is the ability to…
Read More »How can I calculate IP address on Specific CDIR Subnet Ranges?
In the web hosting world, the networking and IP stuff are present in the¿ day to day talking for most system administrators and developers. But some of them get confused about IP ranges and how many IPs are available on each CDIR range. Sometimes we can question ourselves about: How many ips are in a /24 range? How…
Read More »How to Find Out Nginx Web Server Version
How can I print Nginx web server version from the Linux terminal? In order to find out Nginx version, you need to pass the -v or -V options to the nginx binary: Example: nginx -v Output: [[email protected]:~]nginx -v nginx version: nginx/1.11.7 The -v option passed to Nginx shows only the nginx version number, but we can get more…
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