Linux Manual Pages

Free Software * Books

Source Code

Free Media

Linux

RECONSTRUCT

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLES
FILES

NAME

reconstruct − reconstruct mailboxes

SYNOPSIS

reconstruct [ −C config-file ] [ −p partition ] [ −x ] [ −r ] [ −f ]
[ −k ] [ −s ] [ −g ] [ −G ] mailbox...
reconstruct [ −C config-file ] −m

DESCRIPTION

Reconstruct rebuilds one or more IMAP mailboxes. When invoked with the −m switch, it rebuilds the master mailboxes file. It can be used to recover from almost any sort of data corruption.

If Reconstruct can find existing header and index files, it attempts to preserve any data in them that is not derivable from the message files themselves. The state reconstruct attempts to preserve includes the flag names, flag state, and internaldate. Reconstruct derives all other information from the message files.

Reconstruct reads its configuration options out of the imapd.conf(5) file unless specified otherwise by -C. Any mailbox directory underneath the path specified in the partition-news configuration option is assumed to be in news format.

Reconstruct does not adjust the quota usage recorded in any quota root files. After running reconstruct, it is advisable to run quota(8) with the −f switch in order to fix the quota root files.

OPTIONS

−C config-file

Read configuration options from config-file.

−p partition

Search for the listed (non-existant) mailboxes on the indicated partition. Create the mailboxes in the database in addition to reconstructing them. (not compatible with the use of wildcards)

	−x		When processing a mailbox which is not in the mailbox list (e.g. via the -p or -f options), do not import the metadata from the mailbox, instead create it anew (this specifically affects at least the mailbox’s seen state unique identifier, user flags, and ACL).
	−r		Recursively reconstruct all sub-mailboxes of the mailboxes or mailbox prefixes given as arguments.
	−f		Examine the filesystem underneath mailbox, adding all directories with a cyrus.header found there as new mailboxes. Useful for restoring mailboxes from backups.
	−k		Preserve the cyrus.expunge file and the corresponding message files instead of deleting them.
	−s		Adds synchronization records to the log, so the synchronization service can replicate the changes.
	−g		Clear existing or regenerated GUIDs for all messages.
	−G		Force regeneration of GUIDs for all messages.
	−m		NOTE: CURRENTLY UNAVAILABLE

Rebuild the mailboxes file. Use whatever data in the existing mailboxes file it can scavenge, then scans all partitions listed in the imapd.conf(5) file for additional mailboxes.

EXAMPLES

You want to reconstruct the index files for a user, you have recovered a deleted mail file from backup and given it a suitable name (eg user/ben-lacy/33.), but it is not visible since it is not indexed:

reconstruct -r user.ben-lacy

If you have the unixhierarchysep:yes option set in /etc/imapd.conf you would need to run:

reconstruct -r user/ben.lacy

FILES

/etc/imapd.conf

Opportunity

Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.

Education

Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.