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fsdb(1M)							      fsdb(1M)

NAME
       fsdb - file system debugger (generic)

SYNOPSIS
       FStype] specific_options] special

   Remarks
       Always execute the command (see fsck(1M)) after running

DESCRIPTION
       The  command  can  be  used  to	patch up a damaged file system after a
       crash.  It is intended for experienced users  only.   The  file	system
       type  to be debugged is specified as FStype.  Each file system type has
       a unique structure requiring  different	debugging  capabilities.   The
       manual  entries for the file-system-specific should be consulted before
       attempting any debugging or modifications.

   Options and Arguments
       recognizes the following options and arguments:

	      special	     The file name of the special file containing  the
			     file system.

	      Specify the file system type on which to operate (see
			     fstyp(1M)	and fs_wrapper(5)).  If this option is
			     not included on the command line, then  the  file
			     system type is determined from the file by match‐
			     ing special with an entry in that file.  If there
			     is	 no  entry  in	then  the  file system type is
			     determined from the file

	      Specify suboptions specific to each file system type.
			     specific_options is  a  comma-separated  list  of
			     suboptions	 and/or	 keyword/attribute  pairs sup‐
			     ported by the specific FStype.

	      Echo the completed command line, but perform no other action.
			     The command line is  generated  by	 incorporating
			     the  user-specified options and other information
			     derived from the file.  This  option  allows  the
			     user to verify the command line.

EXAMPLES
       Invoke the file system debugger on HFS file system

       Display a completed command line without executing the debugger:

       The previous command might display:

WARNINGS
       Only  experienced  users should use The failure to fully understand the
       usage of and the file system's internal organization can lead  to  com‐
       plete destruction of the file system and total loss of data.

AUTHOR
       was developed by HP and AT&T.

FILES
       Specifies the default file system type
       Static information about the file systems

SEE ALSO
       fsck(1M),  fsdb_hfs(1M),	 fsdb_vxfs(1M),	 fstyp(1M),  stat(2), fs_wrap‐
       per(5), disk(7).

STANDARDS CONFORMANCE
								      fsdb(1M)

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