icheck(8)						      System Manager's Manual							 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-, double-, and triple-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

       Specifies the command path.

RELATED INFORMATION

       Commands:  clri(8), fsck(8), ncheck(8) delim off

																	 icheck(8)