Wipe your personal data with File Shredder
Almost everybody who use PC/Laptop these days have personal files to work with which may be anything from project files to accounts and using these files in computers that are shared among multiple users (e.g. Internet Cafe, college, office) can definitely pose a risk though you delete your file. Deleting a file from PC or emptying the recycle bin cannot guarantee that the file is completely removed from the PC. The deleted files can be recovered if appropriate file recovery tools are used and experts can even recover the data from a formatted disk in some cases. File Shredder can help you to remove files from your hard drive without fear they could be recovered.
Text files are used in day-to-day life to store lot of information including every day notes to personal information including phone numbers, passwords, account numbers, serial numbers, links, etc. But any information stored in plain text file is not gonna be secured and generally its not safe to exchange information as plain text file. 
Regular Expressions are very important part of computing in any programming language and is largely used in web programming these days. Last month I wrote an article for 
Multi-user collaboration is one of the new buzzing words that has become so common these days with the advent of Web 2.0 and other new technologies in the internet. Whenever I think of a collaborative exercise, generally a white board exercise in the conference room comes into my mind and it doesn’t help much when you have something projected on to the screen instead a white board and people want to share their ideas at the same time. This makes multi-user interaction and collaboration with the one computer or a projected output from a computer tough. 
whois is generally a query to get information about domain name which returns information about the site owner, administrative and technical contacts. In Linux PCs the whois command comes with the distribution mostly and for windows users there is no such option. The users need to depend on popular web applications like 