Manage the metadata stores used by Spotlight for indexing.
Show the indexing status of the startup volume
mdutil -s /
Turn on/off the Spotlight indexing for a given volume
mdutil -i on|off path/to/volume
Turn on/off indexing for all volumes
mdutil -a -i on|off
Erase the metadata stores and restart the indexing process
mdutil -E path/to/volume