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Category Technical

This category contains purely technical posts

Optimizing MySQL: Queries and Indexes

You know the scene. The database is just too slow. Queries are queuing up, backlogs growing, users being refused connection. Management is ready to spend millions on “upgrading” to some other system, when the problem is really that MySQL is… Continue Reading →

Repairing Database Corruption in MySQL

Ah, the wonderful feeling of being hauled out of the spa/candlelit dinner/Quake game to be told in panicked tones that there is a ‘database error’. You rattle off the usual suspects, determining that their keyboard is actually plugged in, monitor… Continue Reading →

Optimizing the mysqld variables

I assume you know all about the my.cnf file, and how to set variables. key_buffer_size The key_buffer_size is probably the most useful single variable to tweak. The larger you set it, the more of your MyISAM table indexes you store… Continue Reading →

Memory Analysis With Free and Pmap Command

When we talk of memory, then its the most misunderstood parameters of the whole system,especially, when we talk of Unix as a system, its memory workflow is again different from Linux and so Unix memory management is out of scope… Continue Reading →

Use Google Drive as Backup Drive

We all are worried about our data and would opt to have a backup. But it seems to be a bit expensive when it comes with third party backups or an extra drive for backup. So why don’t we consider… Continue Reading →

Track Progress % of Commands

When you copy a large file in terminal with simple cp command without flags, you might sometimes wonder whether it is really copying or the process got blocked somehow and it will actually never finish. The output is non existent… Continue Reading →

Sort Out Linux Booting Issues

Sometimes it happens on reboot the system gets panic or some error message like “init not found” is displayed, preventing from proper booting; then as first step you can try pass init=/bin/bash (Grub boot loader) or linux init=/bin/bash (if Lilo… Continue Reading →

Installing FFMPEG in the server

Following are the steps to install ffmpeg, ffmpeg-PHP, Mplayer, Mencoder, flv2tool, LAME MP3 Encoder, and Libog from source. It should work on most systems, however may need some tweaking from system to sytem. cd /usr/local/src Download source tarballs: wget http://rubyforge.org/frs/download.php/9225/flvtool2_1.0.5_rc6.tgz… Continue Reading →

Monitor your HDD using SMARTD

smartd is SMART Disk Monitoring Daemon for Linux. SMART is acronym for Self-Monitoring, Analysis and Reporting Technology (SMART) system built into many ATA-3 and later ATA, IDE and SCSI-3 hard drives. The purpose of SMART is to monitor the reliability… Continue Reading →

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