Thanks a bunch Jeff. Rafael.
On Fri, 2003-10-31 at 13:55, Jeffrey Clement wrote: > You could do something like this: > > dd if=original of=start bs=1k count=3 > dd if=original of=rest skip=3 bs=1 > > edit start > then > > cat start rest > complete > > Jeff > > On Fri, Oct 31, 2003 at 03:21:23PM -0700, J. Rafael Sanchez wrote: > > Hey guys, > > > > I have a huge file that needs to be edited using a hex editor. Right now > > i'm using khexedit. The only problem is that this is a multiuser > > environmnet and every time the file is loaded it uses 80 to 90% of > > memory. It loads the "whole" file into memory. Everyone else's processes > > suffer because of it. > > > > The section of the file that needs to be edited is the first 2k. To > > extract this section and read it into the editor, make the changes is > > not a problem. The challenge comes in now that I want to put it back at > > the begining of the file. > > > > to extract, > > $ dd if=pathtoverybigfile of=pathtosectionoffile bs=2k count=1 > > > > How to reverse this so that a put the changed section back into the orig > > file? > > > > Thanks guys. > > > > Rafael. > >
