Greg Larkin <[email protected]> wrote:
> ...
> > truncate -4 myfile should get rid of the last four bytes.  Maybe
> > there's a similar efficient way to truncate the start of a file.
>
> This should do it:
>
> dd if=oldfile of=newfile bs=1 skip=4

Or, perhaps marginally more efficient:

dd if=oldfile of=newfile bs=4 skip=1
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