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mdb_load - Online in the Cloud

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This is the command mdb_load 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



mdb_load - LMDB environment import tool


mdb_load [-V] [-f file] [-n] [-s subdb] [-N] [-T] envpath


The mdb_load utility reads from the standard input and loads it into the LMDB environment

The input to mdb_load must be in the output format specified by the mdb_dump(1) utility or
as specified by the -T option below.


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

-f file
Read from the specified file instead of from the standard input.

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

-s subdb
Load a specific subdatabase. If no database is specified, data is loaded into the
main database.

-N Don't overwrite existing records when loading into an already existing database;
just skip them.

-T Load data from simple text files. The input must be paired lines of text, where the
first line of the pair is the key item, and the second line of the pair is its
corresponding data item.

A simple escape mechanism, where newline and backslash (\) characters are special,
is applied to the text input. Newline characters are interpreted as record
separators. Backslash characters in the text will be interpreted in one of two
ways: If the backslash character precedes another backslash character, the pair
will be interpreted as a literal backslash. If the backslash character precedes any
other character, the two characters following the backslash will be interpreted as
a hexadecimal specification of a single character; for example, \0a is a newline
character in the ASCII character set.

For this reason, any backslash or newline characters that naturally occur in the
text input must be escaped to avoid misinterpretation by mdb_load.


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.

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