File is mysteriously empty. Options to recover?

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http://unix.stackexchange.com – I have seen several posts about recovering deleted files, but this situation is different. My wife had a file called Journal.odt in which she kept a lot of important personal information such as special memories about our kids. The other day when she tried to open it in OpenOffice it complained about the format. I had her hit cancel and back out. When I cat the file it is completely empty. ls says the file is 0 bytes. Had she accidentally selected all of the text in the file, hit backspace and saved it there would still be the OpenOffice meta information in the file. I immediately shut her l (HowTos)