dcheck - Checks directory consistency
/usr/sbin/dcheck [-i inumbers] [filesystem]
-i The -i option is specified with a list of inumbers. If a specified
inumber is found in a directory, the dcheck command displays the
inumber, the inumber of the directory, and the name of the entry.
The fsck command supersedes the dcheck command for normal consistency
The dcheck command reads the directories in a file system and compares the
link-count in each inode with the number of directory entries by which it
is referenced. If a file system is not specified, a set of default file
systems is checked.
To get optimum performance, specify the raw version of the special file
because the ilist is read in large chunks.
Because the dcheck command uses two passes to check directories, it may
produce erroneous diagnostics if active file systems are checked.
If a file is found and the link-count and the number of directory entries
do not agree, dcheck reports relevant information. Allocated files that
have 0 link-count and no entries are also listed. A potentially dangerous
situation occurs if there are more entries than links. If entries are
removed and the link-count drops to zero (0), the remaining entries point
to nothing should be removed. If there are more links than entries or if
there is an allocated file with neither links nor entries, some disk space
may be lost.
Commands: clri(8), fsck(8), icheck(8), ncheck(8)