Load on Linux – top, w, uptime This is a necessary thing to check the load-average on your server for its better and stable performance. In a Linux server/system we can check the load by different ways. High load on…
Administrative tools
Load & Memory monitoring using SAR command – Linux
Is there any way to get my server’s load and memory usage history from commandline? Yes, it’s possible by using the command-line utility SAR. System Activity Reporter is abbreviated as SAR. It is an important tool to monitor server’s different…
Introduction to Python – Say Hello World!
Why this category? Now-a-days we do not have much time to spend for repeated works. We all are busy with learning new things. And we required some automation tools to reduce the work load and save the time. Python is…
A simple note on Reverse DNS Record
Why this topic important? What are the uses of rDNS record? Yeah, we all know about forward DNS lookup and its working. It’s a topic directly focusing on “What is reverse DNS?” A domain name system (DNS) is simply points…
Find and Kill all Zombie processes running on server
Did you ever notice some processes with status “Z” on your server/system? Find and Kill all Zombie processes running on server. These are Zombies. On this article I’m explaining the ways to find and kill all Zombies on the server.…
How to setup kernel fallback in CentOS6?
How to setup kernel fallback in CentOS6? Folks, it’s been a long while since I have published an article. Here I’m explaining about how we can set kernel fallbacks in CentOS6 servers. As SysAdmins, we need regular kernel updates to…
ps command switches, usages and examples in Unix/Linux
Commonly using “ps command” switches with example – Unix/Linux This will be a very useful discussions if you are managing Linux servers with many processes. A lot of switches are available with the command “ps” to trace out processes with…