从安装点获取.dmg的路径 [英] Get the path of the .dmg from the mount point

问题描述

我正在寻找一种获取带有已挂载点的已挂载磁盘映像的.dmg路径的方法.

I'm looking for a way to get the .dmg path of a mounted disk image with just its mount point.

我想编写一个简单的" Finder服务，该服务弹出磁盘映像并丢弃随附的.dmg.弹出是无关紧要的，但是在给定安装点的情况下，如何确定.dmg的路径我很茫然.

I want to write a "simple" Finder service that ejects the disk image and trashes the accompanying .dmg. The ejecting is trivial, but I'm at a loss as to how to figure out the path of the .dmg, given just the mount point.

diskutil 似乎不知道或没有说.

diskutil doesn't seem to know or isn't saying.

它是用于脚本的，因此首选基于AppleScript或基于shell的建议.

It's for a script, so AppleScript- or shell-based suggestions are preferred.

推荐答案

使用hdiutil info获取有关当前安装的映像的信息.然后 使用hdiutil detach /Mount/Point卸下所有文件系统，并卸下映像.

Use hdiutil info to get the information about currently mounted images. Then use hdiutil detach /Mount/Point to dismount all file systems, and detach the image.

如果安装了多个图像，则需要解析hdiutil info的输出以找到正确的图像路径.使用plist输出格式hdiutil info -plist并将其运行到具有

You'll need to parse the output from hdiutil info to find the right image-path if multiple images are mounted. It will probably be more robust to use the plist output format hdiutil info -plist and run that into, say, a python script with plistlib or an AppleScript using the Property List Suite from System Events.

这是一个快速而肮脏的python脚本，可为您提供一个主意.使用python解释器很容易探索选项:

Here's a quick and dirty python script to give you an idea. It's easy to explore options using the python interpreter:

>>> import plistlib
>>> from subprocess import Popen, PIPE
>>> output = Popen(["hdiutil", "info", "-plist"], stdout=PIPE).communicate()[0]
>>> pl = plistlib.readPlistFromString(output)
>>> for image in pl['images']:
...   for se in image['system-entities']:
...       if se.get('mount-point') == '/Volumes/blah':
...          print image['image-path']
/Path/To/blah.dmg

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