NCHECK_FFS(8) System Manager's Manual NCHECK_FFS(8)

ncheck_ffs, ncheckgenerate names from inode-numbers

ncheck_ffs [-ams] [-f format] [-i number ...] filesystem

ncheck_ffs generates a list of filenames and inode numbers for the given file system. Names of directories are followed by a ‘.’. ncheck_ffs may be invoked more simply as ncheck, with no change in behaviour.

The options are as follows:

Print the file names ‘.’ and ‘..’, which are ordinarily skipped.
Use a custom output format when printing inode information. Characters from format are printed for each inode with the following escape sequences:

Print a ⟨bell⟩ character.
Print a ⟨backspace⟩ character.
Print an ⟨escape⟩ character.
Print a ⟨form-feed⟩ character.
Print the inode number.
Print a ⟨new-line⟩ character.
Print the pathname to the file using the current inode number.
Print a ⟨carriage return⟩ character.
Print a ⟨tab⟩ character.
Print a ⟨vertical tab⟩ character.
Print a ⟨single quote⟩ character.
Print a backslash character.
Print a NUL character.

All other characters, when prefixed by a backslash, simply print the character following the backslash. The device name is not printed on the first line of output when the -f option is specified.

number ...
Report only those files whose inode numbers are as listed.
Give more verbose information on inodes.
Report only special files and files with set-user-ID or set-group-ID set. This is meant to find hidden violations of security policies.

The report is not sorted.

sort(1), fsck(8), fsdb(8)

An ncheck command appeared in Version 6 AT&T UNIX. The ncheck_ffs command was designed to be similar in functionality to the corresponding command in SunOS 4.1.3.

Thorsten Lockert <>

February 8, 2020 OpenBSD 7.5