Demystifying 0.0.0.0: The Most Misunderstood IP Address in Networking If you’ve ever built a web server, configured Docker, or spun up a simple API in Node.js or Python, you’ve almost certainly seen it in your terminal: 0.0.0.0. For many developers…
The netstat command is one of the most powerful and useful commands in Linux. It can be used to troubleshoot network problems, find out what processes are using network sockets, and much more. In this blog post, we will discuss…
The cd command is used to change the current working directory. When using the cd command with arguments, you can use either absolute paths or relative paths as arguments for the command. Absolute paths begin at the root of the…
If you’re getting an error like “cd: Permission denied” when trying to change directories in Bash, don’t worry, you’re not alone. This is a common issue that can be fixed fairly easily. In this blog post, we will discuss two…
The SSH option StrictHostKeyChecking is a security feature that affects how SSH verifies the identity of a remote computer when connecting to it. It determines whether strict host checking is enabled or disabled. When this option is enabled, the client…
If you’ve been getting the error message “ssh: Could not resolve hostname Name or service not known,” don’t worry, you’re not alone. The error message “ssh: Could not resolve hostname [name]: Name or service not known” indicates that the SSH…
What are the performance tools you would use on Linux Machine uptime dmesg | tail vmstat 1 mpstat -P ALL 1 pidstat 1 iostat -xz 1 free -m sar -n DEV 1 sar -n TCP,ETCP 1 top Detailed Answer…
Landing a job in the tech industry can be difficult. If you are looking to break into this field, you need to be prepared for the technical interview. This can be a daunting task, but don’t worry – we are…
As a Linux administrator, I often find myself troubleshooting and resolving networking issues. One particular experience that sticks out in my mind was when I had to debug an issue with our DB server’s access. The symptoms of the problem…
Recently, the network at my workplace went down for a few minutes. I was tasked with investigating the issue and found that one of the network cards had failed. Step by Step guide to Troubleshooting network issue I started by…
