On Mon, May 11, 1998 at 08:22:03AM -0600, Chad D. Zimmerman wrote:
> fsck is essentually a defragger pumped up.
Not really -- Unix filesystems do not need to be defragmented, so there
isn't such an operation. fsck is really descendant of three earlier
programs:
icheck: file system consistency check. Compares the map of used blocks
against the free list.
ncheck: generates names from inode numbers.
dcheck: file system directory consistency check. Compares the link count
in each inode with the number of directory entries that reference it.
Fsck automates the cross-checking that once had to be done by hand (i.e.
by comparing the output of these three programs) and adds some pretty good
heuristics to automagically repair problems that it finds. *Generally*
speaking, it's a good idea to allow fsck to repair whatever it wants to.
Running fsck in interactive mode should only be done by those who understand
the low-level structure of Unix filesystems.
---Rsk
Rich Kulawiec
[EMAIL PROTECTED]
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