Method Cat

util/system/fs.cpp:153–158

}

void NFs::Cat(const TString& dstPath, const TString& srcPath) {
    TUnbufferedFileInput src(srcPath);
    TUnbufferedFileOutput dst(TFile(dstPath, ForAppend | WrOnly | Seq));

    TransferData(&src, &dst);
}

void NFs::Copy(const TString& existingPath, const TString& newPath) {
    TUnbufferedFileInput src(existingPath);