lmpx.com

Linux, MySQL, PHP, Perl, Python & XML: practical tutorials and references for open-source developers.

Linux, MySQL, PHP, Perl, Python & XML: practical tutorials and references for open-source developers.

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Topics

Linux

Practical guides to the Linux operating system, from the command line to system administration.

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MySQL

Learn relational databases with MySQL, from simple queries to advanced performance tuning.

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PHP

Server-side scripting with PHP: forms, databases, and web application fundamentals.

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Perl

Text processing and scripting with Perl: regular expressions, file I/O, and CPAN modules.

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Python

Modern Python programming: clean syntax, powerful data structures, and a rich standard library.

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XML

The Extensible Markup Language: structure, validation, querying, and transformation.

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Featured Articles

linux
Understanding Linux Processes

Every running program on Linux is a process with its own PID (process ID). Knowing …
mysql
Indexes and Query Performance

An index is a sorted data structure that lets MySQL find rows without scanning the …
php
PHP and MySQL with PDO

PDO (PHP Data Objects) is the modern, secure way to connect PHP to MySQL. It …
perl
Perl Subroutines

Subroutines (subs) are Perl's functions. They collect all their arguments in the special @_ array, …
python
Lists and Dictionaries

Lists and dictionaries are Python's workhorses. Lists store ordered sequences; dictionaries map keys to values. …
xml
Transforming XML with XSLT

XSLT (Extensible Stylesheet Language Transformations) is a language for transforming XML documents into other XML …

What is lmpx.com?

lmpx.com is a free reference and tutorial site for developers working with open-source technologies. Every article is written to be practical: real commands, real code, real explanations.

The site covers the six technologies in its name: Linux system administration, MySQL relational databases, PHP server-side scripting, Perl text processing, Python programming, and the XML family of standards. It also offers a web gateway to Usenet news servers so you can browse relevant discussion groups.

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