editing a binary file

[Rolf Nielsen]

Anton Shterenlikht wrote:
> I'm creating binary files in fortran.
> Fortran adds 4 byte record delimiters at the beginning
> and the end of each record, which, in the case of a binary
> file, is just at the beginning and at the end of the file.
> I need to delete these record delimiters, because the
> software I use to visualise the binary files interprets
> them as data. But I don't know how. I've looked at
> hexdump and od, but those are only dumping (I think)
> file contents, and I cannot see how to edit a file with them.
> 
> Any advice?
> 
> many thanks
> anton
> 

Hello Anton,

My bet would be /usr/ports/editors/hexedit. Been a while since I've used 
it, but AFAIR, it has a curses or a curses like interface, and it's 
fairly simple to use, yet sufficiently powerful for most normal binary 
editing. If you want a GUI, I believe gnome (and probably KDE as well) 
has its own hex editor.

Good luck,

Rolf