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File Extensions - RAR File Format

SUMMARY: RAR archives defined. How they are packed and unpacked.

RAR is another file format most commonly used on DOS/Windows machines. RAR files take multiple files and pack them into one file, making it easier for people to distribute games, applications, screensavers, photo libraries, etc. Later, the RAR file recipient unpacks the file into its original contents. In this way it RAR files are much like ZIP files.

* WinRAR is a popular software package used for making RAR files.

* Several packages can unpack (but not pack/create) RAR files, including PowerArchiver.

Like RAR files, ZIP files can contain virtually any type of file - good or bad. Never unpack and use a RAR file from an unknown recipient!

Windows users: Also note that unless you have configured your computer with the file extension viewing tweak, it is possible that a filename that looks like it ends with ".rar", especially one attached to an e-mail message, actually has a hidden OTHER extension, meaning that if you double-click the file, it may actually run a computer virus!