I need to know how (if there is a way, programatically or via command line) to merge two files in linux. I DO NOT MEAN A SIMPLE 'CAT' (which involves copying and significant disk operations). I mean changing the file system's table so that the end of one file simple leads to the beginning of what used to be another file. Hmm. This is tough to explain.
When you use 'mv' to move a file in the linux operating system, it is instantaneous and involves no copying. Its a simple modification of the ext2 file system table. I want to be able to do a similar operation except with splitting/merging files.
Is this even possible?