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HOWTO: Reconfigure MySQL to use innodb_file_per_table with zero downtime

InnoDB is a very good storage engine for MySQL that combines reasonable performance with wide popularity and, as a consequence, a good set of tools for diagnostics and fine-tuning. One of its downsides is that it is inefficient when it comes to the disk space management. While an extent of HDD space was added to the storage, InnoDB will not return it back even when you delete tables or databases. To add some flexibility, you should use innodb_file_per_table option. Unfortunately, if you have a running database, you cannot just enable this option. You will have to make a dump of the database and restore it on a new instance of MySQL with the option enabled from the very beginning. This scenario means that the database will be inaccessible from the moment you start mysqldump to the moment you finish restoring the data in the new instance. Is there a way to minimize the downtime?

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Weekend Project: Replace Inetd with Xinetd for Better Network Administration

Xinetd is an alternative to the traditional super-server Internet daemon, inetd, the process that starts and stops all non-persistent network servers. Xinetd acts as a drop-in replacement for inetd, but it can do more than just start and stop services on your Linux machine in response to incoming TCP or UDP connections. The real advantage of Xinetd is that it allows more fine-grained control, including access control lists (ACLs), rate-limiting, time-based access, and stream redirection.

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How to Configure Wireless on Any Linux Desktop

If you are a mobile Linux user one of the first things you need to do is to connect that mobile device to a wireless access point. By default, the standard Wi-Fi tools for the Linux desktops are straight-forward and reliable. That of course presumes you are using the standard desktops (GNOME or KDE). But what happens when you opt for a different desktop such as E17 or Fluxbox? Or what if the "default" standards aren't flexible enough or feature-rich enough for your needs. In those instances you need to take a look at a different toolset for connecting you to a wireless access point.

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Do Away with PowerPoint with S5 on Linux

Public speaking and giving presentations are stressful enough for most folks — why add to that with complex software and worries about platform compatibility? If you know a bit about HTML and how to work a browser, S5 is a standards-based slide show system that can take the hassle out of creating presentations.

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Making LDAP Easy on Linux with phpLDAPadmin

Managing LDAP data doesn't have to be difficult. The phpLDAPadmin project provides a comprehensive Web-based admin tool for easy, accessible administration of your LDAP directory from the comfort of your Web browser.

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