Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
MDB_DUMP(1)		    General Commands Manual		   MDB_DUMP(1)

NAME
       mdb_dump	- LMDB environment export tool

SYNOPSIS
       mdb_dump	[-V] [-f file] [-l] [-n] [-p] [-a | -s subdb]  envpath

DESCRIPTION
       The  mdb_dump  utility  reads a database	and writes its contents	to the
       standard	output using a portable	flat-text  format  understood  by  the
       mdb_load(1) utility.

OPTIONS
       -V     Write  the  library  version  number to the standard output, and
	      exit.

       -f file
	      Write to the specified file instead of to	the standard output.

       -l     List the databases stored	in the	environment.  Just  the	 names
	      will be listed, no data will be output.

       -n     Dump an LMDB database which does not use subdirectories.

       -p     If characters in either the key or data items are	printing char-
	      acters (as defined by isprint(3)), output	 them  directly.  This
	      option  permits  users to	use standard text editors and tools to
	      modify the contents of databases.

	      Note: different systems may have different  notions  about  what
	      characters  are  considered  printing  characters, and databases
	      dumped in	this manner may	be less	portable to external systems.

       -a     Dump all of the subdatabases in the environment.

       -s subdb
	      Dump a specific subdatabase. If no database is  specified,  only
	      the main database	is dumped.

DIAGNOSTICS
       Exit  status  is	 zero if no errors occur.  Errors result in a non-zero
       exit status and a diagnostic message being written to standard error.

       Dumping and reloading databases that use	user-defined comparison	 func-
       tions  will  result  in	new  databases that use	the default comparison
       functions.  In this case	it is quite likely that	the reloaded  database
       will be damaged beyond repair permitting	neither	record storage nor re-
       trieval.

       The  only  available  workaround	 is  to	 modify	 the  source  for  the
       mdb_load(1)  utility  to	load the database using	the correct comparison
       functions.

SEE ALSO
       mdb_load(1)

AUTHOR
       Howard Chu of Symas Corporation <http://www.symas.com>

LMDB 0.9.17			  2015/09/30			   MDB_DUMP(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | DIAGNOSTICS | SEE ALSO | AUTHOR

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=mdb_dump&manpath=FreeBSD+12.1-RELEASE+and+Ports>

home | help