Subject: hexdumping large sparce files
To: None <email@example.com>
From: David Laight <firstname.lastname@example.org>
Date: 01/24/2003 22:50:20
Is there anything in the kernel that could be used to speed up the
dumping of very large, very sparce files?
For instance I would like to be able to verify the non-zero parts of
the following file:
$ ls -ls z
192 -rwxr-xr-x 1 dsl wheel 14797279232 Jan 24 22:31 z
without actually transferring 14Gb of data from kernel to user.
(and maybe without filling all of physical memory with 0 bytes).
David Laight: email@example.com