nostrdb

an unfairly fast embedded nostr database backed by lmdb
git clone git://jb55.com/nostrdb
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mdb_dump.1 (2197B)

      1 .TH MDB_DUMP 1 "2015/09/30" "LMDB 0.9.17"
      2 .\" Copyright 2014-2021 Howard Chu, Symas Corp. All Rights Reserved.
      3 .\" Copying restrictions apply.  See COPYRIGHT/LICENSE.
      4 .SH NAME
      5 mdb_dump \- LMDB environment export tool
      6 .SH SYNOPSIS
      7 .B mdb_dump
      8 [\c
      9 .BR \-V ]
     10 [\c
     11 .BI \-f \ file\fR]
     12 [\c
     13 .BR \-l ]
     14 [\c
     15 .BR \-n ]
     16 [\c
     17 .BR \-p ]
     18 [\c
     19 .BR \-a \ |
     20 .BI \-s \ subdb\fR]
     21 .BR \ envpath
     22 .SH DESCRIPTION
     23 The
     24 .B mdb_dump
     25 utility reads a database and writes its contents to the
     26 standard output using a portable flat-text format
     27 understood by the
     28 .BR mdb_load (1)
     29 utility.
     30 .SH OPTIONS
     31 .TP
     32 .BR \-V
     33 Write the library version number to the standard output, and exit.
     34 .TP
     35 .BR \-f \ file
     36 Write to the specified file instead of to the standard output.
     37 .TP
     38 .BR \-l
     39 List the databases stored in the environment. Just the
     40 names will be listed, no data will be output.
     41 .TP
     42 .BR \-n
     43 Dump an LMDB database which does not use subdirectories.
     44 .TP
     45 .BR \-p
     46 If characters in either the key or data items are printing characters (as
     47 defined by isprint(3)), output them directly. This option permits users to
     48 use standard text editors and tools to modify the contents of databases.
     49 
     50 Note: different systems may have different notions about what characters
     51 are considered printing characters, and databases dumped in this manner may
     52 be less portable to external systems. 
     53 .TP
     54 .BR \-a
     55 Dump all of the subdatabases in the environment.
     56 .TP
     57 .BR \-s \ subdb
     58 Dump a specific subdatabase. If no database is specified, only the main database is dumped.
     59 .SH DIAGNOSTICS
     60 Exit status is zero if no errors occur.
     61 Errors result in a non-zero exit status and
     62 a diagnostic message being written to standard error.
     63 
     64 Dumping and reloading databases that use user-defined comparison functions
     65 will result in new databases that use the default comparison functions.
     66 \fBIn this case it is quite likely that the reloaded database will be
     67 damaged beyond repair permitting neither record storage nor retrieval.\fP
     68 
     69 The only available workaround is to modify the source for the
     70 .BR mdb_load (1)
     71 utility to load the database using the correct comparison functions.
     72 .SH "SEE ALSO"
     73 .BR mdb_load (1)
     74 .SH AUTHOR
     75 Howard Chu of Symas Corporation <http://www.symas.com>