DOVEADM-DEDUPLICATE(1)						      Dovecot						    DOVEADM-DEDUPLICATE(1)

NAME

       doveadm-deduplicate - expunge duplicate messages

SYNOPSIS

       doveadm [-Dv] deduplicate [-u user|-A] [-S socket_path] [-m] search_query

DESCRIPTION

       This command is used to expunge duplicated messages in mailboxes.  doveadm deduplicate is mainly useful to revert some (more or less) acci-
       dental duplication of messages, e.g. after doveadm copy or doveadm import.  doveadm(1) will delete the newest duplicated messages from  the
       mailbox and keep the oldest.
       Deduplication across multiple mailboxes is not supported.

OPTIONS

       Global doveadm(1) options:

       -D     Enables verbosity and debug messages.

       -v     Enables verbosity, including progress counter.

       Command specific options:

       -A     If  the  -A option is present, the command will be performed for all users.  Using this option in combination with system users from
	      userdb { driver = passwd } is not recommended, because it contains also users with a lower UID than  the	one  configured  with  the
	      first_valid_uid setting.

	      When  the SQL userdb module is used make sure that the iterate_query setting in /etc/dovecot/dovecot-sql.conf.ext matches your data-
	      base layout.  When using the LDAP userdb module, make sure that the iterate_attrs and iterate_filter settings in	/etc/dovecot/dove-
	      cot-ldap.conf.ext match your LDAP schema.  Otherwise doveadm(1) will be unable to iterate over all users.

       -S socket_path
	      The  option's argument is either an absolute path to a local UNIX domain socket, or a hostname and port (hostname:port), in order to
	      connect a remote host via a TCP socket.

	      This allows an administrator to execute doveadm(1) mail commands through the given socket.

       -m     if the -m option is given, doveadm(1) will deduplicate by Message-Id header.  By default	deduplication  will  be  done  by  message
	      GUIDs.

       -u user/mask
	      Run the command only for the given user.	It's also possible to use '*' and '?' wildcards (e.g. -u *@example.org).
	      When  neither  the -A option nor -u user was specified, the command will be executed with the environment of the currently logged in
	      user.

ARGUMENTS

       search_query
	      expunge duplicates found from messages matching the given search query.  Typically a search  query  like	'mailbox  mailbox_name	OR
	      mailbox other_box' will be sufficient.  See doveadm-search-query(7) for details.

EXAMPLE

       This example shows how to list and expunge duplicate messages from a mailbox.

       doveadm -f table fetch -u jane 'guid uid' mailbox a_Box | sort
       guid				uid
       8aad0f0a30169f4bea620000ca356bad 18751
       8aad0f0a30169f4bea620000ca356bad 18756
       923e301ab9219b4b4f440000ca356bad 18748
       923e301ab9219b4b4f440000ca356bad 18753
       ...
       doveadm deduplicate -u jane mailbox a_Box
       doveadm -f table fetch -u jane 'guid uid' mailbox a_Box | sort
       guid				uid
       8aad0f0a30169f4bea620000ca356bad 18751
       923e301ab9219b4b4f440000ca356bad 18748
       a7999e1530739c4bd26d0000ca356bad 18749
       ...

REPORTING BUGS

       Report  bugs,  including doveconf -n output, to the Dovecot Mailing List <dovecot@dovecot.org>.	Information about reporting bugs is avail-
       able at: http://dovecot.org/bugreport.html

SEE ALSO

       doveadm(1), doveadm-copy(1), doveadm-fetch(1), doveadm-import(1), doveadm-search-query(7)

Dovecot v2.2							    2013-08-03						    DOVEADM-DEDUPLICATE(1)