Linux-PAM (short for Pluggable Authentication Modules which evolved from the Unix-PAM architecture) is a powerful suite of shared libraries used to dynamically authenticate a user to applications (or services) in […]
Gogo – Create shortcuts to Long and Complicated paths in Linux
Gogo is an impressive way to bookmark directories inside your shell. It allows you to create shortcuts to long and complicated paths in Linux. This way, you don’t have to […]
Linux File Permissions and Ownership Explained
By design, Linux is a multi-user operating system. In an enterprise system, there would be multiple users accessing the same system. But if any user could access and modify all […]
Fix Permission denied (publickey) SSH Error in Linux
This quick tutorial shows you how to fix ssh error “sign_and_send_pubkey: signing failed: agent refused operation Permission denied (publickey)” on Linux. If you are trying to connect to the remote […]
How To Use EXPLAIN to Write Better MySQL Queries
When you issue a query, the MySQL Query Optimizer tries to devise an optimal plan for query execution. You can see information about the plan by prefixing the query with […]
Optimize MySQL: Indexes, Slow Queries, Configuration
MySQL is still the world’s most popular relational database, and yet, it’s still the most unoptimized – many people leave it at default values, not bothering to investigate further. In […]
Apache Performance Tuning Tips
We all know and love Apache. It’s great, it allows us to run websites with minimal configuration and administration. However, this same ease of flexibility and lack of tunning is […]
Real-Time website monitoring with Apachetop
As a webmaster, I’ve often wanted to be able to see real-time hits as they arrive. Sure, Google Analytics is a wonderful package for looking at trends over time, but […]
Tomcat 6 on Ubuntu
If you are running Ubuntu and want to use the Tomcat servlet container, you should not use the version from the repositories as it just doesn’t work correctly. Instead, you’ll […]
Give Root User Logon Permission on MySQL from Any Host
Note that this is Not very secure, and should only be used for a local development box where you don’t feel like setting up individual permissions but still need to […]
