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)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=mdb_dump&sektion=1&manpath=FreeBSD+Ports+14.3.quarterly>

home | help