Another DNSBL Shuts Down: Farewell to spamtrap.drbl.drand.net
If your monitoring system woke you up today with news of your servers blacklisted on a DNSBL, take note. Another DNSBL has disappeared from the Internet scen...
If your monitoring system woke you up today with news of your servers blacklisted on a DNSBL, take note. Another DNSBL has disappeared from the Internet scen...
Archiving permissions for files and directories can often prove to be a valuable practice, especially in scenarios where system configurations or access requ...
If you’re managing an OpenVPN infrastructure and your CA (Certificate Authority) certificate is nearing expiration, a practical approach can help you smoothl...
Since its discovery of vulnerabilities in 2005, the usage of MD5 as a certificate signing algorithm has been strongly discouraged due to its susceptibility t...
When encountering the ORA-01658 error in Oracle Database, it signifies a failure to allocate an initial extent for a segment in a specified tablespace. This ...
In the realm of Unix-like operating systems, particularly Linux, there exists a wealth of commands that cater to various administrative needs, ranging from m...
In the realm of Oracle database management, encountering limitations on disk space allocation is not uncommon. One specific error that may arise due to such ...
Linux administrators often need to retrieve information about the kernel parameters of their system to troubleshoot issues, optimize performance, or understa...
Linux administrators often need to retrieve information about the kernel parameters of their system to troubleshoot issues, optimize performance, or understa...
In the vast realm of Linux, mastering the command line is a valuable skill that empowers users to navigate, control, and customize their systems with precisi...
If you’re dealing with a disk that has bad sectors and you want to recover data from it as quickly as possible using ddrescue, there are a few strategies you...
Here are three commonly used methods:
Today, I will show you three methods of managing user group membership in Linux, along with examples. Managing user groups is an essential aspect of system a...
If you want to find specific information about your Linux processor or check what CPU you have, there are two methods you can use.
Have you ever forgotten which version of Ubuntu you have installed? If so, this article is definitely for you.
To add swap space online without repartitioning, you can create a swap file instead of resizing the swap partition. Here are the steps to follow:
When working with Ruby loops, there may be times when you need to distinguish between odd and even elements. While you can utilize the ActiveSupport cycle he...
Ansible, a powerful automation tool, empowers system administrators and DevOps engineers to streamline their infrastructure management tasks. One of Ansible’...
Ansible provides various loop constructs that allow you to iterate over lists, dictionaries, and other data structures. Loops are useful for performing repet...
Bash, the popular command-line shell for Unix-like systems, offers a wide range of variables that provide control and customization options for your shell en...
Sometimes, it’s necessary to check whether a variable is defined or not in your Ruby code. In this section, we will explore two common approaches to accompli...
Often, you may need to obtain a listing of files from a specific directory for your administrative tasks or scripts. Fortunately, it’s quite simple to accomp...
Have you ever forgotten which Ubuntu version you are using? If that’s the case, here are some methods to check the Ubuntu version currently running on your s...
Lately, I’ve encountered an issue with insufficient free space in one of Oracle’s tables. This problem arose because I failed to utilize the AUTOEXTEND optio...
Oracle database instances rely on initialization parameters to configure their behavior. Two common types of initialization files used by Oracle are SPFile (...
Finding Linux CPU information is essential for understanding the hardware specifications of your system. There are several methods to retrieve processor info...
In today’s interconnected world, securing your computer systems and servers from unauthorized access attempts is of utmost importance. Malicious actors conti...
In the world of secure communication, SSH (Secure Shell) is widely used for remote access to servers. SSH relies on cryptographic keys to authenticate and en...