Index for Section 8

Alphabetical listing for I

Bottom of page

icheck(8)
NAME
  icheck - File system storage consistency check

SYNOPSIS
  /usr/sbin/icheck [-b numbers] [file system]

DESCRIPTION
  The icheck command is obsoleted for normal consistency checking by fsck.

  The icheck command examines a file system, builds a bit map of used blocks,
  and compares this bit map against the free map maintained on the file
  system. If the file system is not specified, a set of default file systems
  is checked. The normal output of icheck includes a report of the following
  items:

    ·  The total number of files and the numbers of regular, directory, block
       special, character special, and fifo files.

    ·  The total number of blocks in use and the numbers of single- and
       double-indirect blocks and directory blocks.

    ·  The number of free blocks.

    ·  The number of blocks missing; that is, not in any file or in any free
       map.

  A list of block numbers follows the -b option; whenever any of the named
  blocks turn up in a file, a diagnostic is produced.

  The icheck command is faster if the raw version of the special file is used
  since it reads the i-list many blocks at a time.

NOTES
  Since icheck is inherently two-pass in nature, extraneous diagnostics may
  be produced if applied to active file systems. It believes even
  preposterous super-blocks and consequently causes a core dump.

DIAGNOSTICS
  For duplicate blocks and bad blocks which lie outside the file system,
  icheck announces the difficulty, the i-number, and the kind of block
  involved. If a read error is encountered, the block number of the bad block
  is printed and icheck considers it to contain zero.

FILES
  /usr/sbin/icheck
      Specifies the command path.

SEE ALSO
  Commands: clri(8), fsck(8), ncheck(8)

Index for Section 8

Alphabetical listing for I

Top of page