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some howtos:

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http://linuxo.com – Fine-grain Access Control on Linux File Systems Digital Blending – Dynamic Range – GIMP Web Application Security (hacking) with DVWA Backup your MySQL databases automatically using Automysqlbackup User and Group Management 101 How To Customize The Firefox Layout Install Redmine on CentOS Burn your newly purchased Ubuntu One Music Store Music Sync Your Pidgin Profile Across Multiple PCs with Dropbox Advertisement: (General)