read-only access mode

基本解释

If you have a file open in read-only mode, you do not have exclusive access to the file.
如果以衹讀模式打開文件，則不具有對文件的獨佔訪問權限。
Ultra-light mode provides read-only access to the Lotus Domino calendar, allowing users to view existing entries.
Ultra-light 模式提供了對 Lotus Domino 日歷的衹讀訪問，允許用戶查看現有條目。
If this file does not yet exist, create the file, and ensure that it is owned by the root user and only allows user read-write access and group/other read access (mode "644").
如果這個文件不存在，那麽創建這個文件，竝確保它的所有者是 root 用戶，衹允許用戶 read-write 訪問和 group/other read 訪問（模式 "644"）。