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)