I just did what is sadly a not terribly uncommon screwup for me, trying to change a filename I typed "rm file1 file2", thereby deleting the first file. Quick like a bunny before something else was written on that space, I looked for an undelete type program and found recover, which worked just fine. I gave it some specs on the file, like earliest and latest possible dates, max and min filesize, what user would have owned it, and voila, it found it and fixed it. I was quite pleased with that, and the whole thing, from mistake to being fixed was like 6 minutes.