MDB_LOAD(1)             FreeBSD General Commands Manual            MDB_LOAD(1)

NAME
       mdb_load - LMDB environment import tool

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

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

       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.

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

       -a     Append all records in the order they appear in the input. The
              input is assumed to already be in correctly sorted order and no
              sorting or checking for redundant values will be performed.
              This option must be used to reload data that was produced by
              running mdb_dump on a database that uses custom compare
              functions.

       -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.

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.

SEE ALSO
       mdb_dump(1)

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

LMDB 0.9.17                       2015/09/30                       MDB_LOAD(1)