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I can't extract an 8GB rar file in the terminal. When I try, I get this error:

$ unrar --extract 
unrar: invalid archive '': Value too large for defined data type                                                                                                             
Usage: unrar [OPTION...] ARCHIVE [FILE...] [DESTINATION]                                                                                                                                        
Try `unrar --help' or `unrar --usage' for more information.                                                                                                                                     
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If you are running Linux 32 bit, there is a big change you won't be able to extract a RAR archive bigger than 4 GB (or even bigger than 2 GB). You may need to execute your command on a 64 bit Linux. – Huygens Mar 13 '13 at 8:30
hmm, I'm quite sure that rar shouldn't keep the entire file in memory as it extracts, would it? – Journeyman Geek Mar 13 '13 at 8:43
@Huygens: Although your concerns make sense, you cannot put that into the question before the OP verifies that that is the case. – TFM Mar 13 '13 at 8:58
@TFM I thought I had made it more "neutral" in the proposed update. But agreed on the principles. Thanks for the feedback. – Huygens Mar 13 '13 at 9:06

You need the 64bit version of unrar to extract files of this size. There may be a work around to extract this with unrar but I can't seem to figure it out.

If you can re-create the archive use:

rar a -v2097152k -R output-file.rar input-file  

This will ensure that your rar is saved in 2gb chunks and you will be able to unrar it again.

I think the best option for you is just to unrar this file on another machine.

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