In the old days, if a developer needed to resolve an alias file on disk, they would use a Carbon function such as FSResolveAliasFile. Instead of resolving to the file on your home volume, it resolves relative to the location on the new volume. Click on the alias file and “Show Original” again. Now, copy the whole folder to another volume, for example to a thumb drive or other external drive on your Mac. You should have a folder hierarchy that looks like this:Ĭlick on the “File Alias” item, then choose “File” -> “Show Original” from the Mac menu bar to see how it resolves to the original. To test this: create a Folder in your home folder called “Test”, and a file within it called “File”. It is similar to a POSIX symbolic link, but whereas a symbolic link references the original by full path, an alias has historically stored additional information about the original so that it stands a chance of being resolved even if the original full path no longer exists.Īn alias, for example, can usually withstand being copied from one volume to another. When a user selects a file in the Mac Finder and chooses File -> Make Alias, the resulting “copy” is a kind of smart reference to the original.
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