如何將 Maildir 移動到另一個使用者的子目錄？

當員工離開公司時，我想將他們的整個 Maildir 移動為“老員工”帳戶中的文件夾。

鑑於 Maildir 專門使用文件系統，我覺得應該可以做到mv ~fred/Maildir ~oldemployees/Maildir/fred或類似。

如果我這樣做，我如何觸發郵件客戶端注意到有一個新目錄？

在我們的帶有 Dovecot 的 IMAP 伺服器上，我這樣做，將整個 Maildir 層次結構複製到另一個使用者郵箱的子文件夾中：

定義變數，以便可以複製/粘貼其餘部分

olduser=martina
olddir=/home/$olduser/Maildir

newuser=jasmin
newgroup=users
newdir=/home/$newuser/Maildir
newfolder="Martina"
newdest="$newdir/.$newfolder"

將所有文件夾和子文件夾移動到另一個使用者的子文件夾中

mkdir -v "$newdest"
for d in cur new tmp; do mv -vi "$olddir/$d" "$newdest/"; done

# Move only folders which contain mails,
# and exclude some special folders like Trash, etc.

cd $olddir
for d in .??*; do
 if [[ "$d" =~ ^.(Junk|Trash)$ ]] || [ -z "$(find "$d"/{cur,new,tmp} -type f)" ]; then
   echo ignore "$d"; continue;
 fi;
 mv -vi "$d" "$newdest/$d";
done

# subscribe new user to new folders

find "$newdir" -maxdepth 1 -type d -name ".$newfolder*" -printf "%f\n"
| while read d; do echo ${d/#./}; done
| cat - "$newdir/subscriptions"
| sort -u > "$newdir/subscriptions.new"

mv "$newdir/subscriptions.new" "$newdir/subscriptions"

# fix ownership/permissions

chmod -R u=rwX,go=          "$newdir"
chown -R $newuser:$newgroup "$newdir"

# Check ownership/permissions
find "$newdir" -not -perm 700 -type d -ls
find "$newdir" -not -perm 600 -type f -ls
find "$newdir" -not -user  $newuser   -ls
find "$newdir" -not -group $newgroup  -ls

引用自：https://serverfault.com/questions/690150