[ILUG] Script to move Maildir content

[Patrick O'Connor]

I've got a bunch of mails (in Maildir format) to move from one server to
another. Only problem is that there's lots of them (60 accounts in 5
different domains, 70GB total). I'm trying to dip my toe in the waters of
shell scripting but am a bit lost. If anyone can help out I'd be glad to
provide suitable beverages at the next potd!

I've written a "pseudo script" which just outlines how I think the job could
be done but is lacking in some minor details like proper commands, array
setup and generally anything to make the script usable! It should help to
describe the task though....

---Start "Pseudo Script"---
# text file containing table mapping old usernames to new usernames
$users = /location/users

#$archivelocation has a bunch of folders named oldusername1, oldusername2
etc each containing the Maildir directory plus other files/directories.
#The Maildir directory contains miscellaneous courier mail files and "new"
and "tmp" directories as well as the "cur" directory.
$archivelocation = /location/of/maildir/archives

#$newlocation has a bunch of folders named newusername1, newusername2 etc
containing the Maildir directory. They're all empty so overwriting is not a
problem.
$newlocation = /location/of/new/maildirs

#Needed to set permissions on copied content.
$domainusername = somedomain


#All I want to move is partial contents of the Maildir folder i.e. the "cur"
folder and all .folders (except .Trash).
#I need to copy the only the required contents from the old Maildir to the
new and change ownership/group
#of the copied files to "newusername*.domainusername:$domainusername"

#With my (very basic) knowledge of commands I would do this...

cp -frv $archivelocation/$oldusername1fromusersfile/Maildir/cur
/$newlocation/$newusername1fromusersfile/Maildir/
cp -frv $archivelocation/$oldusername1fromusersfile/Maildir/./*
/$newlocation/$newusername1fromusersfile/Maildir/
rm -fr /$newlocation/$newusername1fromusersfile/Maildir/.Trash
chown -R $newusername1fromusersfile:$domainusername
/$newlocation/$newusername1fromusersfile/Maildir/

Repeat for each username combo....

---End "Pseudo Script :-) ---

Contents of "users"
oldusername1:newusername1
oldusername2:newusername2


Any idea how I could put together??

Thanks,
Patrick
-- 
Blog: http://patrickoconnor.ie/blog
Company: http://www.synchronicity.ie