DaisyDisk是一款Mac上的磁盘空间使用扫描工具，能够将整个磁盘上的文件和目录以饼状图和列表的形式显示出来，让我们一目了然的看到哪些目录或文件占用了多少空间，支持目录间的上下导航，我的MacBook Air 的SSD只有128GB，因此常常发现硬盘空间不足，这个时候就可以使用DaisyDisk看看到底哪些文件或目录占用了大量磁盘空间，进而删除无用的目录或文件，节省磁盘空间，非常的实用！


DaisyDisk allows you to visualize your disk usage and free up disk space by quickly finding and deleting big unused files.
The program scans your disk and displays its content as a sector diagram where the biggest files and folders at once become obvious. To drill down to a folder, just click on a segment. To bubble up, click in the center. Move the mouse over the diagram and see the name and path of each file, and enclosed files (if any).
Hit Space to quickly preview file content, without launching another application. In this way, walk around your disk and drag-and-drop all unneeded files into the “collector”. Expand the collector to check its contents. When done, clean it up with a single click.
What’s New:
Version 4.9
Improved discovery of the hidden space on macOS Catalina by including the following items into the scan report:
Non-firmlinked items of the Data volume in /System/Volumes/Data,
Virtual Memory volume in /private/var/VM,
Recovery and Preboot volumes (when they are mounted) in /Volumes/Recovery and /Volumes/Preboot.
Updated the safety rules to allow deletion of some non-critical files in /private folder.
Added support of FUSE-mounted drives.
Minor improvements and bug fixes.
Compatibility: OS X 10.10 +