If I use the Vi's "get file size" "set file size" and "set file position" I can increase or shorten the filesize.
Changes are only at the end of the file.
Is there any posibillity to do this at the startposition of a file?
It means, can I add or delete (not replace) bytes at the start position?
The size would become longer or shorter.
This makes sence for large files.
I am looking for adding or deleting an header to a large file without reading the whole file.