Trying to debug that Linux issue or need help installing it on another system? This is the right place for that and other Linux-related tips.
Total 55 articles.
Lately, I installed CentOS 7 in VMWare, and it was all good until it booted in CLI (Command Line Interface) mode. I tried startx command but no help. It looks like Desktop Environment was not installed for some reason. If you are in the same situation then here is how you can install the necessary…
Want to see yourself as Penetration Tester, IT Security Expert? There are thousands of standalone software & tools for ethical hacking, penetration testing, forensic investigation and it can be a burden to maintain and keep a track on standard OS like Linux, Windows or MAC OS. If you are practicing ethical hacking, then you would…
It’s not possible to remember everything you read and especially the one you are not going to use them frequently. That’s why we have bookmarked so you can refer whenever needed. Working in IT, one thing you can’t ignore is to cheat sheet/reference guide. Having a relevant cheat sheet in your bookmark can help to…
A troubleshooting performance related issue in the IT world is always challenging, and if you were not aware of the right tools, then it would be frustrating. If you are working as a support in a production environment then most probably you will need to deal with performance-related issues in the Linux environment. Let’s go…
Lately, I was working on securing one of the website’s through Let’s Encrypt and during I encountered the following error while running “./letsencrypt-auto” Checking for new version… Creating virtual environment… ./letsencrypt-auto: line 455: virtualenv: command not found It was on CentOS 6.7 hosted with DigitalOcean and this is how I fixed. Ensure you have root privilege…
Shell Script to Restart the Services if Down/Crashed It’s common for the process to crash/go down due to various reasons, which you can investigate and fix the issues but that may take a little time. However, one thing you can do it immediately to reduce the downtime for better availability is to automate restart of…
Kali Linux comes with more than 600 preinstalled penetration/security tools. Having these preinstalled makes Kali Linux a true penetration testing platform for the security engineer. Tools are categorized as follows:- Information Gathering Sniffing & Spoofing Vulnerability Analysis Exploitation Tools Password Attacks Wireless Attacks Forensic Tools Maintaining Access Hardware Hacking Web Applications Stress Testing Reverse Engineering…
Lately, I moved Geekflare from Shared Hosting to DigitalOcean on CentOS 6.6, and it was all ok till I received a “High-risk vulnerabilities” alert. In CentOS 6.x when you install PHP-fpm, you will get 5.3 by default, which is considered high risk as an unsupported version. If you are still running 5.3 PHP-FPM, you must…
One of the challenging tasks while working in the project team is to perform the necessary connectivity test though services don’t exist. This is often you have to do when you are working in a DMZ environment for migration or new projects. Let’s take a real-time example – you are working on migration, and you…
Let’s explore crontab, its commands, and various operations associated with Crontab. We will learn how to schedule tasks using the cron utility, and in last, we will also discuss some of the online tools which help us with formatting and testing the cron commands. Origin Crontab stands for “cron table“. The word cron has been…
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