This category "Open Source and Linux", includes a lot of articles about FOSS, OSS, FLOSS, LAMP and maybe any open source related software. I am a RHCE (RedHat Certified Engineer) ,NCLE/NCLP (Novell Certified Linux Engineer/Professional) and these certifications are the highest ones in Open Source and Linux world. As a result, the articles in this category is highly related to my professional work as Technical Engineer and I used to use them as a guidelines during my professional technical services to enterprise customers.