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I'm using rsync to back up folders from my iMac to a WD MyBook and the process seems to leave files such as these:


The last one is the most common, finding one in each folder at times. The others (shadows of other files judging by the extensions) not so common but when I find them there are multiples in the same folder. A one off so to speak.

I read somewhere some time back, but can't find it, that it may actually have something to do with the mode I am accessing the MyBook with. eg. SMB rather than .. and here's where my recall fails me.

EDIT: ok I've found the other means of access, particular to OSX it seems:
AFP - Apple Filing Protocol

EDIT: they also seem to defy deletion, in some cases. but on discovering the AFP access I think that might be the access that allows me to delete them (with less messing around).

ok, I couldn't find at first because I had been deleting them,manually so I was in the process of doing another rsync to see if I could reproduce; I noticed in the file build list (for a dry run) that I had one on the local HDD!

"Get info" tells me it's a "Unix Executable". The file was in a hidden ".AppleDouble" folder. When I put that to the "file <>" test you asked for it told me:

 _VUC69~7: AppleDouble encoded Macintosh file.

(ps. am I able to do linefeeds in comments as I'm struggling to do it O_o)

share|improve this question
You're sure it's _, not ._ (starting with a period)? – slhck Oct 25 '13 at 5:00
no, they aren't dot files. I've read here about making an exclude file for rsync, sorry I digress, but just prefixed with '_'. Thanks for the edit, was that done just with TAB or spaces before those lines? – Dee Oct 25 '13 at 5:03
4 spaces make it mono spaced – Canadian Luke Oct 25 '13 at 6:15
Can you establish the type of the extension-less files? A command like "file _VUC69~" will do it. – MariusMatutiae Oct 25 '13 at 7:53
Thanks @MariusMatutiae. Edited my post to reflect new info. – Dee Oct 25 '13 at 12:09

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