Thanks, Sergey. I think I have understand what you said after reading manual and trying :)
2012/5/27 Sergey Poznyakoff <[email protected]>: > CUI Hao <[email protected]> ha escrit: > >> Sorry I didn't make it clear that test0.tar is the first full dump. So >> test01.tar shouldn't be empty. >> I want it to be the new full dump in place of test0.tar. > > That's why you need to use a clear snapshot file. > >> > When listing or extracting, snapshot file is not used, but it is >> > required syntactically (because the -g option requires an argument). >> I don't think so. It's because snapshot file is provided that tar will >> delete files that should be deleted correctly, > > Tar does not use snapshot files when extracting. > > Regards, > Sergey
