Alternate Data Streams to NTFS
There is such a thing in NT as ADS (Alternate Data Streams - additional data streams). And easier to say: NTFS supports multithreaded files in the form of
For example: the conclusion to the "monitor" of a program is redirected to an alternative stream: ping.exe >> somefile.txt: kakashka
The whole joke is that the explicit file size has not changed at all, since the axis will measure the size of the main (default) thread (for which the colon is not written, its name is also not written). But the space on the disc was smaller due to the fact that we recorded in the stream kakashka.
As allowed to use this, guess yourself. ))) Although, of course, in addition to splitting NTFS-volumes, for ADS it is allowed to find many more other uses. For example: it is allowed to write a cool prog which is hidden in alternate streams;)
It is impossible to bang an alternative stream with the usual del. The easiest way to get rid of alternative streams is to transfer the file containing them to FAT, only then back. There are programs for their detection. For example, "lads". By the way, it is allowed to cling additional streams to directories, only files cannot be put into them.