On Tue, Dec 2, 2008 at 12:33 PM, KLEIN Stéphane <[EMAIL PROTECTED]> wrote: > Hi, > > I need to update one octet in a binary file (it's disk image file raw). > > To do that, I use hexedit and I do update manualy. > > Now, I would like to script this task, I know address of octet to update > and the new value. > > Do you know a tool to do that ? > > I've tried : > > echo "0xFF" | ascii2binary -b 16 | dd of=/tmp/out bs=1 count=1 seek=3 > > but the file is cutted after 4 octets. >
Adding the option 'conv=notrunc' to the dd command should do what you want. -Nye
