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mdb_dump - Online in the Cloud

Run mdb_dump in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command mdb_dump that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

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 characters (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 functions 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 retrieval.

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

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