There are several approaches you can take to reveal and copy full file paths as text in OS X.
Sometimes you may wish to get the full path of an item in the Finder, and while there are several ways to access file paths, not all will allow you to extract them as text to paste into documents you may be composing.
For example, if you select a file in the Finder and press Command-C to copy it, the behavior when pasting it will be different, depending on the program being used. In some cases the program will only paste the file name, but in others it may try to embed the file's contents or its icon where you have pasted. The same goes for dragging and dropping files from the Finder; they similarly may be handled either as file names or as icon or content objects.
If you would like to instead just get the file path of the selected document, you can use the Finder's "Show Path Bar" option in the View menu, open the document in a program and use the path menu, or by searching for the item in Spotlight followed by holding the Option and Command keys while hovering your mouse over a search result to reveal its path in the preview window. However, these approaches do not give you the option to copy the file path as text.
To copy the file path of a file or folder as a text string that you can paste into another document, there are several approaches you can take:
While generally intended to be a quick view of file information, the text content in the information window can be selected by clicking and dragging or by double- and triple-clicking, so you can use these approaches to select the file path and copy it from this window.
To do this, simply launch Terminal and then drag a file to its window, and Terminal will output its file path at the command prompt, which you can then copy. You do not need to know any Terminal commands to do this, and can close the Terminal window when you are done copying.
To do this, open a new Finder window by pressing Command-N, and then press Shift-Command-G to reveal the Go to Folder panel for the new window. Then drag a target file from another window to the Go to Folder text field, where it will be converted to a full text path that you can select and copy. Unfortunately you cannot drag a file from the same window once the Go to Folder panel is open, but you can drag from the desktop or another Finder window.
While it seems like a replacement for pressing Command-C in the Finder, this approach will ensure that the file paths are copied in full as text instead of only as references that will either be truncated to file names, or be otherwise altered.
With this service created, you can now select any number of items in the Finder, right-click them, and then choose "Copy Path as Text" from the Services contextual menu and be able to paste the path (or paths) in the location of your choice. You can also use the keyboard system preferences to assign a custom hot key such as Option-Command-C to the service, so you can invoke it directly.
Keep in mind that this approach will not copy a file reference, so you cannot use it to move or copy files from one location to another in the Finder, but it will help when managing lengthy and sometimes complex file paths, or the paths of more than one selected item.
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