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83 lines
3.2 KiB
ReStructuredText
83 lines
3.2 KiB
ReStructuredText
============
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notmuch-dump
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============
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SYNOPSIS
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========
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**notmuch** **dump** [--gzip] [--format=(batch-tag|sup)] [--output=<*file*>] [--] [<*search-term*> ...]
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DESCRIPTION
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===========
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Dump tags for messages matching the given search terms.
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Output is to the given filename, if any, or to stdout.
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These tags are the only data in the notmuch database that can't be
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recreated from the messages themselves. The output of notmuch dump is
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therefore the only critical thing to backup (and much more friendly to
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incremental backup than the native database files.)
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See **notmuch-search-terms(7)** for details of the supported syntax
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for <search-terms>. With no search terms, a dump of all messages in
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the database will be generated. A "--" argument instructs notmuch that
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the remaining arguments are search terms.
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Supported options for **dump** include
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``--gzip``
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Compress the output in a format compatible with **gzip(1)**.
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``--format=(sup|batch-tag)``
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Notmuch restore supports two plain text dump formats, both with one
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message-id per line, followed by a list of tags.
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**batch-tag**
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The default **batch-tag** dump format is intended to more
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robust against malformed message-ids and tags containing
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whitespace or non-\ **ascii(7)** characters. Each line has
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the form
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+<*encoded-tag*\ > +<*encoded-tag*\ > ... --
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id:<*quoted-message-id*\ >
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Tags are hex-encoded by replacing every byte not matching
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the regex **[A-Za-z0-9@=.,\_+-]** with **%nn** where nn is
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the two digit hex encoding. The message ID is a valid
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Xapian query, quoted using Xapian boolean term quoting
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rules: if the ID contains whitespace or a close paren or
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starts with a double quote, it must be enclosed in double
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quotes and double quotes inside the ID must be
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doubled. The astute reader will notice this is a special
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case of the batch input format for **notmuch-tag(1)**;
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note that the single message-id query is mandatory for
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**notmuch-restore(1)**.
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**sup**
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The **sup** dump file format is specifically chosen to be
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compatible with the format of files produced by
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sup-dump. So if you've previously been using sup for mail,
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then the **notmuch restore** command provides you a way to
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import all of your tags (or labels as sup calls
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them). Each line has the following form
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<*message-id*\ > **(** <*tag*\ > ... **)**
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with zero or more tags are separated by spaces. Note that
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(malformed) message-ids may contain arbitrary non-null
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characters. Note also that tags with spaces will not be
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correctly restored with this format.
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``--output=``\ <filename>
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Write output to given file instead of stdout.
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SEE ALSO
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========
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**notmuch(1)**, **notmuch-config(1)**, **notmuch-count(1)**,
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**notmuch-hooks(5)**, **notmuch-insert(1)**, **notmuch-new(1)**,
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**notmuch-reply(1)**, **notmuch-restore(1)**, **notmuch-search(1)**,
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**notmuch-search-terms(7)**, **notmuch-show(1)**, **notmuch-tag(1)**
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