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How to Set Up Automatic Filesystem Checks and Repair on Linux

One of the most important tasks in Linux administration is to check the integrity of the filesystem. The Linux filesystem can be damaged under various circumstances, e.g., system crash, power loss, disconnected disk, accidentally overwritten i-node, etc. Thus it is a good idea to check the integrity of the filesystem...

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How to set up Open WebMail in CentOS

Webmail interface is one of must-have services for any mail server. Most of us are used to native email client software, but what if your favorite client software is not available for any reason? 

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How to Look Up the Geographic Location of an IP Address from the Command Line

If you want to find out where a given IP address is physically located on earth, there are quite a few online GeoIP lookup services you can try (e.g. These online services are mostly powered by freely available GeoIP databases such as those from MaxMind. Besides using such web-based...

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How to Use the Super Fast i3 Tiling Window Manager on Linux

Never get lost on your Linux desktop again, and make fast, full use of your screen real estate with the i3 tiling window manager.

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BeagleBone Black: How to Get Interrupts Through Linux GPIO

 Getting interrupts from your chips is fairly straightforward using the Linux GPIO interface. The collection of programming languages and libraries available on a Linux installation lets you choose which method to use to monitor your gpio/value files and respond to interrupts.

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