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Need to monitor Linux server performance? Try these built-in command and a few add-on tools. Most Linux distributions are equipped with tons of monitoring. These tools provide metrics which can be used to get information about system activities. You can use these tools to find the possible causes of a performance problem. The commands discussed below are some of the most basic commands when it comes to system analysis and debugging server issues such as:

1. Finding out bottlenecks.
2. Disk (storage) bottlenecks.
3. CPU and memory bottlenecks.
4. Network bottlenecks.

Right of out the box, vim isn’t as suited to editing Python code as it could be. In fact, it’s rather annoying to write Python code with an uncustomized instance of vim. What follows is a description of how to put into place the most essential features of the editor one chooses to write code, especially Python code, in as manifested with vim. With the following changes, you can create a highly customized and powerful IDE, allowing you to increase your productivity without purchasing a commercial offering...

A nice collection of linux tips and tricks...

This article discusses the process of recovering deleted data from an ext3 partition, on a system running Linux, using a process called data carving. This basic technique is useful in any number of situations, such as recovering data that has been accidentally deleted by a user, information removed in an attempt to erase signs of a system intrusion that could be used to track the source, or data erased by an end-user attempting to cover up an acceptable use policy infraction...

dmidecode is a tool for dumping a computer's DMI (some say SMBIOS) table contents in a human-readable format. This table contains a description of the system's hardware components, as well as other useful pieces of information such as serial numbers and BIOS revision. Thanks to this table, you can retrieve this information without having to probe for the actual hardware...

Piwik is a downloadable, open source (GPL licensed) web analytics software program. It provides you with detailed reports on your website visitors: the search engines and keywords they used, the language they speak, your popular pages… and so much more.

Write BASH-scripts by inserting comments, statements, tests, variables, builtins, etc..
Speed up writing new scripts considerably. Write code and comments with a professional appearance from the beginning....

Red Hat Enterprise Linux 5 supports the cpu-hotplug mechanism, which allows for CPUs to be dynamically disabled and re-enabled on a system without requiring a system reboot...

The Apache/PHP/MySQL stack is immensely popular for web application development. Its components are powerful, versatile and Free. Unfortunately however, PHP comes with a default configuration that is not suitable for production mode, and may cause developers to use insecure techniques during the development phase. Inside is a check list of settings that are intended to harden the default PHP installation...

Speed up mysql tmp table creation by putting it in the ramdisk...

Additional reading: Dans' Blog