RAR is one of the many file formats that exists today that is used for the purpose of file compression (also known as archiving), the standard method for taking larger files (or collections of files) and turning them into one or more smaller, related files for ease of transfer. The name comes from the Russian software engineer Eugene Roshal (Roshal ARchive, also commonly associated with the acronym Rational And Reliable) who developed the file format in 1993, and is rapidly becoming the standard file compression format of choice.
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There are several features that set the RAR format apart from other file compression formats, and make it the popular choice around the world. While its actual ability to compress files is on par with other available formats, RAR was designed to efficiently handle split volumes, a larger compressed file broken into several smaller files. The files can then be either automatically reassembled and decompressed or single files within the RAR can be extracted without needing all the other pieces. This was a great benefit in the early days of data transmission and still comes in handy today, since smaller files can be sent faster than one large file.
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More Info Regarding File Extension Rar
Another feature of the RAR format is the “recovery record”, a process in which redundant information can be added to the compressed files to help make them more resistant to data corruption, which can occur when transferring files from one location to another. If one part of the archive has been corrupted, it's still possible for it to be recovered if there's enough of a recovery record to rebuild the bad data. It also has strong encryption capabilities, to help protect the contents of the archive from unwanted viewers. Newer versions use a 128-bit encryption method that is becoming the standard for online security, as well as the ability to not only put a password on the compressed file itself but also individual files within the archive, for an added level of security.
There are several programs available that are able to read and decompress (unpack) RAR files. The most common is WinRAR, a graphical commercial application available for Windows, Linux, Mac OS X, MS-DOS, OS/2 and FreeBSD that reads, unpacks and also allows the creation of the latest versions of RAR files. A non-graphical version, simply called ‘RAR', is available for other operating systems. Other programs that can open and decompress RAR files RAR is one of the many file formats that exists today that is used for the purpose of file compression (also known as archiving), the standard method for taking larger files (or collections of files) and turning them into one or more smaller, related files for ease of transfer. The name comes from the Russian software engineer Eugene Roshal (Roshal ARchive, also commonly associated with the acronym Rational And Reliable) who developed the file format in 1993, and is rapidly becoming the standard file compression format of choice.
There are several features that set the RAR format apart from other file compression formats, and make it the popular choice around the world. While its actual ability to compress files is on par with other available formats, RAR was designed to efficiently handle split volumes, a larger compressed file broken into several smaller files. The files can then be either automatically reassembled and decompressed or single files within the RAR can be extracted without needing all the other pieces. This was a great benefit in the early days of data transmission and still comes in handy today, since smaller files can be sent faster than one large file.
Another feature of the RAR format is the “recovery record”, a process in which redundant information can be added to the compressed files to help make them more resistant to data corruption, which can occur when transferring files from one location to another. If one part of the archive has been corrupted, it's still possible for it to be recovered if there's enough of a recovery record to rebuild the bad data. It also has strong encryption capabilities, to help protect the contents of the archive from unwanted viewers. Newer versions use a 128-bit encryption method that is becoming the standard for online security, as well as the ability to not only put a password on the compressed file itself but also individual files within the archive, for an added level of security.
There are several programs available that are able to read and decompress (unpack) RAR files. The most common is WinRAR, a graphical commercial application available for Windows, Linux, Mac OS X, MS-DOS, OS/2 and FreeBSD that reads, unpacks and also allows the creation of the latest versions of RAR files. A non-graphical version, simply called ‘RAR', is available for other operating systems. Other programs that can open and decompress RAR files for the Windows OS include 7-Zip, IZArc, PeaZip and ALZip. For Mac users, RAR readers include Stuffit Expander, The Unarchiver and Zipeg. There is also ‘UnRAR', a non-graphic read-only program similar to ‘RAR', that is available for most platforms.
Opening RAR files with any of these programs is simple. When installing most of the graphical programs, you will either be given the option to ‘associate' the .rar extension to them (automatically launching the reader when opened) or it can be assigned manually using the ‘Open With' function in the right click menu. Most of the programs will also let you ‘drag and drop' the RAR files into them, or can be opened from a menu command in the program itself. For the non-graphic versions, a command line needs to be typed in with directions as to which file to open, where to put it, and so on. If there is a password associated with any part of the file, you will be prompted to input it when you attempt to decompress it.
Errors may occur when attempting to open a RAR file. The most common error is the corruption of data mentioned above. This usually happens during a transfer (downloading or uploading the file, copying to or from a removable media source, etc.) where the data is either copied incorrectly or gets lost during transmission. When such an error occurs, the reader will inform you of it when attempting to decompress the file. In newer versions of RAR, the “recover record”, if available, can attempt to fix the damaged part of the files and recover the corrupted data. If this doesn't work, another copy of the RAR file will need to be obtained from the source. If this can't be done, data recovery companies exist which will attempt to fix files for a fee.include 7-Zip, IZArc, PeaZip and ALZip. For Mac users, RAR readers include Stuffit Expander, The Unarchiver and Zipeg. There is also ‘UnRAR', a non-graphic read-only program similar to ‘RAR', that is available for most platforms.
Opening RAR files with any of these programs is simple. When installing most of the graphical programs, you will either be given the option to ‘associate' the .rar extension to them (automatically launching the reader when opened) or it can be assigned manually using the ‘Open With' function in the right click menu. Most of the programs will also let you ‘drag and drop' the RAR files into them, or can be opened from a menu command in the program itself. For the non-graphic versions, a command line needs to be typed in with directions as to which file to open, where to put it, and so on. If there is a password associated with any part of the file, you will be prompted to input it when you attempt to decompress it.
Errors may occur when attempting to open a RAR file. The most common error is the corruption of data mentioned above. This usually happens during a transfer (downloading or uploading the file, copying to or from a removable media source, etc.) where the data is either copied incorrectly or gets lost during transmission. When such an error occurs, the reader will inform you of it when attempting to decompress the file. In newer versions of RAR, the “recovery record”, if available, can attempt to fix the damaged part of the files and recover the corrupted data. If this doesn't work, another copy of the RAR file will need to be obtained from the source. If this can't be done, data recovery companies exist which will attempt to fix files for a fee.
