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

NAME
       doveadm-deduplicate - expunge duplicate messages

SYNOPSIS
       doveadm	[-Dv]  deduplicate  [-u	user|-A|-F file] [-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) ac-
       cidental	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.

       -o setting=value
	      Overrides	the configuration  setting  from  /usr/local/etc/dove-
	      cot/dovecot.conf	and  from the userdb with the given value.  In
	      order to override	multiple settings, the -o option may be	speci-
	      fied multiple times.

       -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 iter-
	      ate_query	setting	in /usr/local/etc/dovecot/dovecot-sql.conf.ext
	      matches  your  database layout.  When using the LDAP userdb mod-
	      ule, make	sure that the iterate_attrs  and  iterate_filter  set-
	      tings in /usr/local/etc/dovecot/dovecot-ldap.conf.ext match your
	      LDAP schema.  Otherwise doveadm(1) will  be  unable  to  iterate
	      over all users.

       -F file
	      Execute the command for all the users in the file.  This is sim-
	      ilar to the -A option, but instead of getting the	list of	 users
	      from  the	 userdb,  they are read	from the given file.  The file
	      contains one username per	line.

       -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 Mes-
	      sage-Id header.  By default deduplication	will be	done  by  mes-
	      sage 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  the  -F file  option,  nor  the
	      -u user was specified, the command will be executed with the en-
	      vironment	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 available
       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			  2015-05-09		DOVEADM-DEDUPLICATE(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ARGUMENTS | EXAMPLE | REPORTING BUGS | SEE ALSO

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