Use the informations of this post at your own risk
You can loose data if you don't know what you are doing
How do you know if one file has associated resource fork with it.
It's fairly simple.
Open up the Terminal application. Change the directory to the one the file is located and type this command
ls -la filename/rsrc
If the file "filename" has resource you'll see an output like this one
-rw-r--r-- 1 yourusername yourusername 57847 Jan 1 2004 filename/rsrc
In this case the resource fork size is 57847 bytes long.
If the file has no resource fork at all, the file size should be 0 (zero).
What about get rid of this resource information
Create an empty file
touch emptyf
and copy it over the resource
cp emptyf filename/rsrc
Check the result issuing the ls command again
ls -la filename/rsrc
This time the output should look like this
-rw-r--r-- 1 yourusername yourusername 0 Sep 17 10:48 filename/rsrc
To know more about the macintosh file system read these articles
Apple
Wikipedia
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