Osx-xattr
From John Freier
XAttr is a feature in OSX to add meta data to a file.
You can tell if a file has these attributes by using 'ls'. You will see the '@' sign.
> ls -rw-------@ 1 jdoe 1694191859 0 Nov 1 14:42 tmp.oEgiuo01
To see these attributes
xattr -l tmp.oEgiu01
To remove these attributes
xattr -d {attr_name} tmp.oEgiuo01
To see the help documentation
xattr -help