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78 lines
2.3 KiB
Groff
78 lines
2.3 KiB
Groff
.TH MDB_LOAD 1 "2014/06/20" "LMDB 0.9.14"
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.\" Copyright 2014-2015 Howard Chu, Symas Corp. All Rights Reserved.
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.\" Copying restrictions apply. See COPYRIGHT/LICENSE.
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.SH NAME
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mdb_load \- LMDB environment import tool
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.SH SYNOPSIS
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.B mdb_load
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[\c
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.BR \-V ]
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[\c
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.BI \-f \ file\fR]
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[\c
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.BR \-n ]
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[\c
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.BI \-s \ subdb\fR]
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[\c
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.BR \-N ]
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[\c
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.BR \-T ]
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.BR \ envpath
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.SH DESCRIPTION
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The
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.B mdb_load
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utility reads from the standard input and loads it into the
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LMDB environment
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.BR envpath .
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The input to
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.B mdb_load
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must be in the output format specified by the
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.BR mdb_dump (1)
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utility or as specified by the
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.B -T
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option below.
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.SH OPTIONS
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.TP
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.BR \-V
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Write the library version number to the standard output, and exit.
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.TP
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.BR \-f \ file
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Read from the specified file instead of from the standard input.
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.TP
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.BR \-n
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Load an LMDB database which does not use subdirectories.
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.TP
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.BR \-s \ subdb
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Load a specific subdatabase. If no database is specified, data is loaded into the main database.
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.TP
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.BR \-N
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Don't overwrite existing records when loading into an already existing database; just skip them.
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.TP
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.BR \-T
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Load data from simple text files. The input must be paired lines of text, where the first
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line of the pair is the key item, and the second line of the pair is its corresponding
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data item.
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A simple escape mechanism, where newline and backslash (\\) characters are special, is
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applied to the text input. Newline characters are interpreted as record separators.
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Backslash characters in the text will be interpreted in one of two ways: If the backslash
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character precedes another backslash character, the pair will be interpreted as a literal
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backslash. If the backslash character precedes any other character, the two characters
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following the backslash will be interpreted as a hexadecimal specification of a single
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character; for example, \\0a is a newline character in the ASCII character set.
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For this reason, any backslash or newline characters that naturally occur in the text
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input must be escaped to avoid misinterpretation by
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.BR mdb_load .
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.SH DIAGNOSTICS
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Exit status is zero if no errors occur.
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Errors result in a non-zero exit status and
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a diagnostic message being written to standard error.
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.SH "SEE ALSO"
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.BR mdb_dump (1)
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.SH AUTHOR
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Howard Chu of Symas Corporation <http://www.symas.com>
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