[clug] Cut a file in place.

[Andrew Janke]

Hi all,

Let's say I have a 26GB compressed archive and 17GB of spare disk space and
want to cut it up into chunks. The internet says no, but this list
typically doesn't fail me.

Chop a bit off the front and then use truncate the file?  Seems a risky way
but the option that I'll have?

a