In OS X, Spotlight is an effective way to search your entire hard drive for a file or folder, email, or any other file. There are many other things Spotlight can do, and searching for files is just one of them. Spotlight is also capable of looking up dictionary definitions, launching apps, performing calculations, previewing audio, video, documents, and other files. This article will outline some of the benefits of using Spotlight and how to use Smart Folders, which allow you to search for a file even if you don’t know its name.

Sherlocked. It’s a word that often gets thrown around after Apple casually integrates a feature offered by some other software into one of its operating systems. Its origin goes back to a time before OS X’s Spotlight feature when Sherlock was the Internet and file search software offered by Apple. Watson, at the time, was a third party utility by Karelia Software that offered very similar functionality, and one of Apple’s versions of Sherlock closely resembled the popular Watson.

Yesterday Apple introduced a more powerful version of Spotlight on OS X after quite a while of letting the feature remain unchanged. The easiest way to describe the updated version of Spotlight is to compare it to the popular Mac utility Alfred. For this reason, several Alfred users voiced concern about Alfred’s fate going forward, enough people that its creators addressed Alfred’s place in a Yosemite world on their blog:

A few users have voiced concerns that Spotlight in Yosemite looks more like Alfred, and wonder whether this changes anything for Alfred and his future.

What you have to remember is that Spotlight’s primary objective is to search your files and a small handful of pre-determined web sources. Meanwhile, Alfred’s primary objective is to make you more productive on your Mac with exceptional and powerful features like Clipboard History, System commands, iTunes Mini Player, 1Password bookmarks, Terminal integration, fully bespoke and customisable user-created workflows and much, much more.

Their message is very similar to last year’s WWDC when Apple introduced its iCloud Keychain which closely resembles a specific feature of 1Password and similar apps. 1Password has since shipped several updates adding new features to its software on the Mac, iPhone, and iPad, and it sounds like Alfred is planning to do just the same.

In fact, we’ve been working on some pretty special and truly amazing new features that you’ll hear about over the next few months. We think these will blow your mind and can’t wait to tell you more.

One big change for Apple with the unveiling of OS X Yosemite today is Bing web searches in the completely revamped Spotlight feature. Spotlight, which allows users to look up anything locally on their Mac as well as perform web searches, received a redesigned user experience in Yosemite, but it might have also received a switch to Bing from Google search.

To be fair, the “web search” feature of spotlight prior to Yosemite actually just defaults to the default search engine in your browser of choice. If that happens to be Safari or Chrome like it is for most users, that meant Spotlight would typically send users to a Google search results page if they hadn’t changed their default preference. Now, Apple is listing Bing searches– but not Google– as a feature of Spotlight regardless of the default option (pictured above). We’ve yet to confirm that Bing is the only web search option for Spotlight in OS X Yosemite, as we’ve not yet been able to get the new Spotlight web search feature to work properly in the first beta.

While Spotlight is going to use Bing, Apple’s revamped search bar in Safari still uses Google as does iOS 8. Its easy to imagine Apple is only continuing to use Google search in Safari due to contractual agreements, but it’s harder to imagine it just decided to use Bing for Spotlight with no plans to possibly use it in its other products down the road.

If you’re finding that your Mac fans are running a lot more than they used to, you might want to check out whether a couple of Spotlight processes are consuming more than their fair share of CPU cycles.

Ever since the latest Mavericks update, I found that my MacBook Pro seemed to be running hot a lot of the time, with fans ramping up to high levels to cool it. Checking Activity Monitor didn’t seem to be shedding much light on things at first glance. The only two processes using an unusual amount of CPU were mds and mds_stores. These are two processes used by Spotlight when indexing, so I didn’t think too much of it – Spotlight has to do its indexing sometime, right?

But several checks later, these two processes seemed to be helping themselves to significant chunks of CPU on a regular basis, at which point I did some Googling.

I started by disabling Spotlight altogether to confirm that it was the culprit. To do this, I went into Terminal and entered:

sudo mdutil -a -i off

The fans spooled down and all was back to normal. Spotlight was indeed the culprit.

I briefly considered leaving Spotlight off until the next OS X update, but that proved too much of a pain. I keep my most-used apps in the dock, but everything else I habitually launch from Spotlight. CMD-space plus the first letter or two of the app is just too convenient to give up. So I did some more Googling – after switching Spotlight back on with:

sudo mdutil -a -i on

The first tip I found was here, where it suggested deleting the Spotlight database and forcing it to re-index. You can do this in Terminal again:

 sudo rm -rf /.Spotlight-V100/*

Top tip: set this going overnight, as the re-indexing takes a while.

This helped quite a bit, but the mds process still seemed a little greedy. More Googling led me to a suggestion to remove from Spotlight’s indexing any directories with frequently-changing content, especially those used for online backup. You can do this by going into System Preferences, clicking the Privacy tab and then drag-and-dropping onto it any directories you don’t want it to index.

I added my CrashPlan, MobileSync and Dropbox folders – three specific suggestions I’d found – and then for good measure added some others with frequently-changing content.

This did the trick: my fans stayed on low, and Activity Monitor showed the mds processes consuming only tiny amounts of CPU.

I’m not sure how general an issue this – hence making this an aside – but if you’re finding your Mac running hot, it may be worth checking out.