Final answer:
To view the space taken by local snapshots on a Mac volume, use the Terminal command 'tmutil listlocalsnapshots /'. This will list the local snapshots but does not show their size directly. Further analysis or tools may be required to determine the actual space used.
Step-by-step explanation:
To see how much space is being taken on the volume by local snapshots, you can use a Terminal command. Specifically, you should use the following command: tmutil listlocalsnapshots /. This command will list all the local snapshots created by Time Machine on the root volume. It does not provide the size of each snapshot, but it shows you the dates of the snapshots from which you can infer how much space might be used approximately. If you're looking to see the actual space taken, you might need to use further commands or third-party tools.
Other options like checking Time Machine preferences or using Finder's Get Info might not provide detailed information about the space used by local snapshots.