All Stories

If you require more controls on file permissions, ACL (a.k.a Access Control Lists) might be a nice choice. ACL goes beyond normal user-group based permission control and allow setting permissions on per individual user or group basis.

I’ll show two tips here on how to check a process’ running time, it’s very helpful for system administrators to know these tips as they may need to clean some abnormal processes. It’s a common issue when using FastCGI with…

The Exceptional Performance team from Yahoo.com identified a number of best practices for making web pages fast. The list includes 34 best practices divided into 7 categories.

The Journaling Block Device layer (JBD) isn’t ext3 specific.  It was designed to add journaling capabilities to a block device.  The ext3 filesystem code will inform the JBD of modifications it is performing (called a transaction). The journal supports the…

The mod_setenvif module allows you to set environment variables according to whether different aspects of the request match regular expressions you specify. These environment variables can be used by other parts of the server to make decisions about actions to…

This is a Perl module that was posted in a comment by our friend Justy (a.k.a. the iSheep), it solves a problem that I’ve faced a lot, especially with Perl scripts that run as daemons, where you need to copy…