CentOS Hacks, Tips, and Tricks from Practitioners

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Recent Posts

• What a Difference Diff Can Make!
• Quick and Dirty Monitoring Tool
• Stop Lock Files from Locking Your Cron Jobs Upon Unscheduled Reboot
• Creating a swap partition
• Surviving fsck.ext3: Unable to resolve LABEL problem

MySQL Hacker

• Changing Default MySQL Temp Dir from /tmp to someting else
• A Practical SPEED-UP Story for Large MySQL Installation
• Freeing Disk Space from MyISM Table Space
• MySQL Blocked Becauase of Too Many Connections
• Debugging a MySQL Issue with PHP Using XMP instead of PRE
• Using mysqladmin for monitoring MySQL server (Part I)
• Increasing the Memory Size for Memory Tables
• Exporting (dumping) VIEWs Using mysqldump
• Understanding MySQL Query Cache for PHP Developers (Part I)
• Using SQL Directives to Control Query Performance

Apache Hacker

• Running Apache with PHP5 and PHP4 modules on the Same Linux Server
• Quick and Dirty Apache Bandwidth Report Hack in Perl
• Disabling SSL v2 in Apache/SSL
• Quick and Dirty Apache Log Analyzer to Find Top-100 IP Visits
• Output Filtering Using PHP
• Compiling Apache with Old Version of APR Utils…
• Another 64-bit Headache Installing Apache on CentOS 5.3
• Setting up a PHP Filter for a Directory Alias
• Writing a Custom Apache Log File Using a PHP Script in Real Time
• Using Awk to do Quick and Dirty Analysis of Apache Logs

MiniCTO

• minicto: I dare you to ask your software team/consultant if they ever worked on profiling the software or even developed it to have profiling support
• minicto: Optimization considerations should be part of software design and not an after-thought!
• minicto: It is much harder to optimize fully developed software than one in development
• minicto: Many inexperience software engineers think that per Pareto Principle they can easily optimize code by as it relates to 20% of the code.
• minicto: Pareto Principle applied to software engineering states that 80% of the run-time is spent executing 20% of the code.
• minicto: The core discipline of computer security is simple: shut all doors and windows and open only on a as-needed basis under careful watch
• minicto: Computer security risks are not mitigated at one place; they are handled in layers: location, hardware, os, storage, network, API, users
• minicto: Performance tuning is an art that most programmers don't experience in school or early career; its makes or breaks software engineers
• minicto: Nothing beats a whiteboard session with the team when it comes to hashing out ideas, issues and just about anything to do with project mgmt
• minicto: Developers hate a boss who take no time to nag about another project just when a project successfully launched; no time review/refactor work

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