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    Teaser Paragraph:
    Rarely, the Mac App Store may report erroneous app download statuses or even offer a malformed file leading to an app that doesn’t launch or is partially downloaded. These situations are almost always the result of an interrupted or corrupted download, but can occur in some other scenarios as well.
    Sometimes simply deleting the app in question can resolve any surrounding difficultly, but on some occasions that isn’t possible or isn’t effective. These type of unusual errors can typically be resolved by manually clearing out the Mac App Store cache, and then re-downloading the app, or re-visiting the Mac App Store. This tutorial will walk through completing that process.
    Accessing the Mac App Store Temporary Download Caches
    Be sure to backup your Mac before beginning this process, it’s unlikely something will go wrong if you follow the instructions but because you are editing a system level cache directory it’s always good practice to backup and be sure your data is safe. Don’t skip backing up. 
    open $TMPDIR../C/com.apple.appstore/

    Quit out of the Mac App Store Open the Terminal, found in /Applications/Utilities/ and type the following command exactly: Hit Return and the com.apple.applestore folder will open in the Finder of Mac OS Move the contents of this folder onto the desktop of the Mac (or if you are confident, move the contained temporary data into the Trash) Importantly, do not delete or adjust any other files outside of this directory, when finished close the com.apple.applestore folder Relaunch Mac App Store Now you should be able to download or re-download the apps or Mac OS installer files again, and they should work properly as intended.
    This process can help if you’re unable to download something from the Mac App Store, if it’s showing up erroneously as downloaded when it’s not, or if there are constant verification errors or other problems with the downloaded app or installer file. For example, you may need to do this if you notice that the Mac App Store is persistently showing a Mac OS installer as “Downloaded” despite not having completed the download as discussed in this Sierra troubleshooting detail. If you delete the temp cache data, it will allow you to re-download that Mac OS installer again in such a situation. 
    This troubleshooting trick will not resolve user level cache issues with the App Store, which are typically superficial behavior like the App Store not loading pages or behaving in an inordinately slow manner. 
    For those wondering about alternatives that do not involve the command line, you can also approach this temp cache directory through the Mac App Store “Debug” menu, but the latest versions of Mac OS and Mac App Store do not seem to support the current defaults write command to reveal the option. If you happen to know an updated defaults string that works with modern Mac OS releases, be sure to leave a comment. 
        from: http://osxdaily.com/2016/10/08/mac-app-store-temp-cache-folder/

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    A feature added in macOS Sierra is handy for those who frequently switch among two languages while typing.

    Twitter buddy Michael Fessler alerted Mac 911 to a great help for those who frequently type in keyboards for two different character sets, like Latin and Hebrew, Chinese, Arabic, and many others. You can make a quick-switch option from the keyboard without resorting to a menu, by turning a tap of the Caps Lock key into a keyboard swap.
    The option appears in the Keyboard system preference pane in the Input Sources tab. It has a lot of explanation: “Use the Caps Lock key to switch to and from U.S. Press and hold to enable typing in all uppercase.”
      This won’t appear when you have two keyboards that use the same basic underlying set of characters. That may be confusing, because, for instance, you can add a French keyboard that uses a different layout, like AZERTY, and it’s not an option. Both the U.S. and French keyboards derive characters from the same Latin set.
    Pick a non-Latin keyboard, and the option appears. If you have multiple non-Latin keyboards, the first one you added is the only one that Caps Lock swaps between. If you add more and then delete the first or more, the most recently added or the last one remaining becomes the swappable keyboard.

    The Keyboard preference pane now lets you set a simpler way to swap for certain keyboards.
    This doesn’t work for all non-U.S. layouts, however. If you add Japanese, as my friend Matthew Amster-Burton did, the checkbox doesn’t appear. That’s because macOS’s default input method for Japanese is Hiragana, which relies on the underlying roman syllables, according to Matthew.
    You can seemingly predict this: if the keyboard preview in the preference pane shows Latin (or “Western”) characters, the keyboard option doesn’t appear; if the preview shows non-Latin characters, it does.
    from:  http://www.macworld.com/article/3123735/macs/how-to-use-cap-locks-in-macos-sierra-to-switch-between-keyboards-that-use-different-characters.html

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    Now that macOS Sierra has Siri built directly into the Mac operating system, you’re probably wondering what exactly you can do with the handy virtual assistant on your computer.
    It turns out that Siri has many abilities unique to the Mac, which you can’t perform on an iPhone or iPad with the virtual assistant. Of course nearly all of the traditional Siri commands from iOS work in macOS as well, which is just one of many reasons we think Siri is one of the features in macOS Sierra that you’ll use most. 
    Accessing Siri on the Mac
    Before issuing commands to Siri, you’ll want to summon the virtual assistant. The easiest way to do this are by clicking on the menu bar item in the upper right corner, the Dock icon, or by hitting the Option + Spacebar keystroke. 

    When you click to activate Siri, Siri will stick around until you either click the icon again or close the Siri window in the corner of the display. 
    Now that yo just a taste of the type of commands Siri can perform on the Mac. You can substitute obvious things as well, for example you can ask about different settings or preference panels, Wi-Fi instead of Bluetooth, any application the Mac, ask to show any file type or document name, and so much more. 
    Mac Siri Commands List
    This list will give you an idea of what to try and where to start with Siri on the Mac:
    Put my computer to sleep Activate the screen saver Make the screen brighter Make the screen dimmer  Is Bluetooth on? Turn Bluetooth off / on Lower the volume Increase the volume Show me privacy settings Show me location settings Show me network settings What is my desktop wallpaper I forgot my iTunes Password How fast is my Mac?  How much memory does my Mac have? How much free disk storage is available? What is my Mac serial number? What OS version is this?  How much iCloud storage do I have? Open Mail application  Open Safari Open Messages  Open the website for OSXDaily.com Open the webpage (site name or site URL) Send a message to (name) saying (message) Open the Documents folder  Open the Pictures folder  Show me files named “screen shot” Show me files from yesterday Show me image files from last week Show me documents from two days ago Show me what I was working on yesterday Show me my music Play (song name) in iTunes What song is playing? Skip this song Remind me to call (name) in 20 minutes Show me pictures from last October Show me my photos from Hawaii Your best bet to mastering Siri on the Mac is to simply play around with the virtual assistant, asking various questions, changing command language, asking for different types of documents or apps, requesting different information, just have fun. 
    In fact, nearly every one of the commands from this Siri commands list work on the Mac as well, though obviously iPhone and iPad specific tasks and features are not possible on the Mac, though some will adjust accordingly. Explore and have fun.
    The Siri Commands List, Courtesy of Siri on the Mac
    Another option is to ask Siri directly, what can you do for me? This works to reveal many additional command options as well, since Siri for Mac has a little help guide that comes along for the ride, you can access the details by opening Siri and pressing the info ? question mark button, or if you ask Siri on the Mac what the assistant can do for you. This shows a variety of menu items showing different types of commands to ask Siri, some of which are Mac specific and others which are generalized for Siri. 
    Those menus from the Mac showing giant lists of Siri commands have been posted below for easy browsing, check out the screen captures and try them out yourself:

    Have any particular favorite Siri commands for Mac? Let us know in the comments.
    from: http://osxdaily.com/2016/09/28/use-mac-siri-commands/

    Teaser Paragraph:
    With MacOS Sierra now available, Mac users can now get Siri on their computers, have improved iCloud integration, unlock their Macs with an Apple Watch, use Apple Pay on the web, and much more. Before you go diving right into updating to macOS 10.12 though, you should take a few precautionary steps to prepare for the software update.
    We’ll walk through some simple steps to prepare for updating to macOS Sierra so that you can install the new Mac OS system software with ease. 
    1: Check Hardware for Support 
    Is your Mac supported by macOS Sierra? If it’s relatively new and built in the middle of 2010 onward, the answer is probably yes, but you’ll want to be sure by viewing the macOS Sierra compatibility list first.
    Most apps that are compatible with El Capitan are compatible with Sierra as well, just be sure you update your apps after you install macOS Sierra. If you have any mission critical apps, you may want to reach out to the developer to investigate if a particular application has any issues or not.
    2: Backup, Backup, Backup
    No matter what system software you update, you always should backup first. Don’t skip making a complete and thorough backup of your Mac before installing MacOS Sierra.
    Setting up Time Machine on a Mac is easy and allows for simple backups and restoring in the odd event something goes haywire. 
    Don’t skip a backup, it’s important. 
    3: Installing macOS Sierra
    Did you backup? Did you insure your Mac is compatible? And you backed up the Mac completely so that all of your data is secure? Don’t skip the backup. Then you’re ready to update and install macOS Sierra. The simplest way to update is by letting the installer run after downloading, this will bring the current version of Mac OS X up to date to the Sierra, it’s a pretty easy process:
    Go ahead and download macOS Sierra now from the Mac App Store When the Installer launches, go through the simple steps and select your Mac hard drive to update to macOS Sierra macOS Sierra will download and install, rebooting the Mac when completed Typically a macOS Sierra installation takes a bit over an hour, but it can vary depending on computer speed, what version is being updated, and how much stuff is on the Mac.
    When it’s finished installing, the Mac will reboot itself into macOS 10.12 Sierra, ready to go and enjoy.
    Additional macOS Sierra Installation Notes
    If you were in the macOS Sierra beta testing program, you might want to opt out of Mac OS X beta software updates after you get to the final version, otherwise you’ll keep getting minor beta releases offered as updates If you need to re-download macOS Sierra, delete any existing beta installers on the Mac, reboot, and you should be able to get the latest macOS Sierra installer Want to make a bootable installer drive? You can create a macOS Sierra boot drive easily with these instructions, you’ll need an 8GB or larger USB drive and the original installer handy, that’s about it Users can perform a clean install of MacOS Sierra if desired as well, we’ll cover that in the future If you’re skittish about updating, waiting until the first minor point release version (in this case, macOS Sierra 10.12.1) is a relatively common conservative strategy to try and avoid any potential bugs that may linger in the final release As long as you made a backup beforehand, you can downgrade from Sierra if need be after the fact If you want to use the iOS-to-Mac and vice versa clipboard feature, you’ll need to be sure the iPhone or iPad is updated to iOS 10 or later Are you prepared for Sierra? Did you jump right into the update? Do you have any thoughts on installing macOS Sierra? Let us know in the comments!

    Teaser Paragraph:
    Ever wished you could make a dialog alert pop-up on the Mac by way of the Terminal? Well it turns out that you can with the always useful osascript command, which allows execution of AppleScript from the Terminal. For those who spend a lot of time at the command line of MacOS, this can be a great little trick to notify you of when a specific task has completed, or even to be included as part of a script. This is sort of a visual approach to one of my favorite simple Terminal tricks which is to verbally announce when a command line task has completed.
    Let’s review how advanced Mac users can trigger alert dialog boxes in the MacOS GUI from the command line. You can choose to specify a specification application to trigger the pop-up alert to appear within, or, perhaps better yet, trigger a alert dialog in whatever the foremost application in Mac OS X is.

    And yes this works in every version of macOS or Mac OS X that has existed, so there shouldn’t be any compatibility issues here.
    How to Make a Dialog Alert Pop-Up in Mac OS
    Perhaps the most useful dialog alert is one that is visible from anywhere and is thus sent to whatever is the foremost application. This insures the alert box isn’t missed.
    The syntax to trigger a dialog alert box in the frontmost application on the Mac is as follows:
    osascript -e 'tell application (path to frontmost application as text) to display dialog "Hello from osxdaily.com" buttons {"OK"} with icon stop'
    The resulting pop-up alert box looks like this:

    For example, you could use this to trigger a dialog box in the frontmost application when a task at the command line has completed. Let’s say we’re running a python script and want an alert box to notify us when it has completed, the syntax for such a use case could look like the following:
    python MagicScript.py && osascript -e 'tell application (path to frontmost application as text) to display dialog "The script has completed" buttons {"OK"} with icon caution'
    That example would trigger a dialog box that says “The script has completed” with the yellow caution icon to the frontmost application in Mac OS X GUI after python has finished running ‘MagicScript.py’. You can pick other icons like stop, note, caution, or even specify a path to a custom icon if desired.
    While you can specify an application, System Events, or SystemUIServer, choosing the broader frontmost application allows the alert dialog window to appear onscreen no matter what application is at the forefront. Let’s cover triggering dialog alerts into specific apps, since that may be desirable as well. 
    Trigger a Dialog Alert in Specific Application
    To send a dialog or alert into a specific application, simply specify the app name in question, like so:
    Triggering an alert dialog in Mac OS Finder by way of command line:
    osascript -e 'tell app "Finder" to display dialog "Hello from osxdaily.com"'
    Triggering an alert dialog in Terminal app via command line:
    osascript -e 'tell app "Terminal" to display dialog "Hello from osxdaily.com"'
    Triggering an alert dialog in Safari via command line:
    osascript -e 'tell app "Safari" to display dialog "Hello from osxdaily.com"'
    Trigger an alert dialog to System Events by way of command line:
    osascript -e 'tell app "System Events" to display dialog "Howdy Doo"'
    You can specify any application to send the alert to this way, but for many of us the broader frontmost or System Events are likely the more useful choice.
    If a general pop-up dialog trigger is too intrusive, you might appreciate sending alerts to the Notification Center on Mac with terminal-notifier, terminal-notifier is a third party solution that allows command line messages to appear in the general Notifications Center of Mac OS. An even less invasive option would be to trigger a notification badge onto the Terminal Dock icon though that may be too subtle for many users needs.
    Anyway, this is a basic overview of triggering visual alert dialogs into the graphical interface of Mac OS by way of the command line. You can go much deeper than this if desired through more complex uses of AppleScript and osascript including having interactions with the dialog box impact what happens next, but that’s approaching a more complex topic which would be better served in it’s own article. Users who are interested in learning more about scripting with AppleScript can review the documentation included with the Script Editor app which is quite thorough and detailed.
    Have any interesting ways to use this tip, or know of another method to trigger dialog boxes into the GUI of Mac OS from the command line? Let us know in the comments.

    Teaser Paragraph:
    Many Mac applications and downloads arrive as a PKG package file, but have you ever wanted to open a PKG file to view exactly what is being installed and where it’s going from the source .pkg? Assuming you get a .pkg installer from a trusted source like Apple there is generally nothing to be concerned with about running a package installer file, but not all PKG installers are as trustworthy. Additionally, sometimes people are just curious about what exactly is going on behind the scenes, and what is going to be run by the package installer and where it intends to put files on a Mac
    This is where the amusingly named ‘Suspicious Package’ application comes in to play, it’s a free Mac app which allows the opening and inspection of PKG installer files before the installation is actually executed, giving you a look at what is going to happen when the PKG is run.

    Using Suspicious Package to open and inspect .pkg files on a Mac is not particularly complicated though it’s obviously most appropriate for advanced users who will have a general idea of what they’re looking at and what to make of it. If any of this sounds interesting to you, you’ll want to download and install the application, which includes a Quick Look plugin:
    Get Suspicious Package free from the developer (for macOS and Mac OS X) Once Suspicious Package is installed, you can give it a try by dragging any PKG installer file into the application, or selecting a package installer in the Finder and hitting Command+Spacebar to activate Quick Look on the package in question. 

    Within Suspicious Package, you’ll see three primary tabs which detail all sorts of information about the package file. The first is “Package Info” which shows an overview including how many items will be installed, the size of the installation, the developer ID and if it is signed (if applicable) and valid or expired, how many installation scripts are run, and where and when it was downloaded:

    The “All Files” view shows you exactly what files are going to arrive from the package file and where they are going to go, including permissions for specific files:

    The final tab shows the scripts that will be run, “post install” which are often cleanup bash scripts that adjust permissions or perform a cleanup duty:

    While all of this is informative to any and all users, it’s really intended for advanced users who encounter package files from dubious sources or that are otherwise questionable. If you’re downloading all of your apps, updates, and packages from Apple.com or an equally trustworthy location, you may find Suspicious Package to be interesting but not particularly noteworthy since the source is trusted, though even packages from Apple can encounter weirdness like having a pkg get stuck on Verifying which can sometimes be troubleshooted through a utility like this. Where Suspicious Package really gets useful is in more advanced situations where higher Mac security is necessary and where users want to be sure a file is trusted and an installer isn’t doing anything sketchy when it’s run. 
    Longtime Mac users may recall that a package inspection feature used to exist in Mac OS X some time ago via the right-click menu, but that feature has since been removed. More advanced Mac users can still extract pkg files with pkgutil without actually installing them but it requires the use of the command line, and the Show Files method to see what files are going to be installed and where to is not always available or detailed enough. 
    Suspicious Package requires a relatively modern version of macOS or Mac OS X to use. Mac users with older system software can try  Pacifist which performs a similar ability to dig around in PKG files if interested.
    from: http://osxdaily.com/2016/08/31/open-kg-files-mac-what-installs-where-suspicious-package/

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    If you’ve ever encountered a lengthy document or webpage that you want the gist of, but don’t have the time to read or scan through, you can use the excellent Summarize Service in Mac OS X to summarize the text for you.
    Summarize is adjustable as well, meaning you can choose how dense or light you want the summary to be. You can pick paragraphs or sentences, and adjust the length of the summary, which can vary from a simple outline condensed from the document, to a nearly cliff-notes like version of the text in question, or anything in between.

    Summarize must be enabled on most Macs before it will be usable, and then its just a matter of learning how to use the summarize feature to provide a condensed overview of the document, web page, or any selected text. We’ll show you how to enable this helpful feature and how to use it.
    Enabling Summarize in Mac OS
    Before anything else, you must enable the Summarize service. This exists in nearly all even vaguely modern versions of macOS and Mac OS X:

    Open the “System Preferences” from  Apple menu and go to “Keyboard” Choose the “Shortcuts” tab and visit “Services” Scroll down until you find “Summarize” and enable the checkbox next to it Close System Preferencse Using Summarize on the Mac to Review Text
    Now that Summarize is enabled, you can use it with any selected text, whether it’s a web page, a long word, text, or pages document, or just about anything else:

    Choose the text you wish to summarize, if you want to summarize an entire document or webpage, select all the text (Command + A for Select All works well for this purpose) Right-click on the selected text and go to the “Services” menu Choose “Summarize” to bring up the Summarize Service feature Adjust the ‘Summary Size’ dial as desired, as well as choosing Sentences or Paragraphs As you’ll see, the summary instantly changes as you adjust the settings. Once you are satisfied with the summary, you can copy it, or save it, or discard it.
    This is helpful for so many uses, whether you just want to get a quick outline of a document, get the general substance of something without reading it all, and so much more. For example, I had a colleague some years ago who would use Summarize with a word counter to shorten essays and long emails after they were written and they swore by the combination, not a bad idea!
    Like any other item in the contextual Services menu, it can be disabled or removed just by going back to the Services system preference area and unchecking the box. 
    Thanks to LifeHacker for pointing out this useful but long forgotten feature in Mac OS X.
        from: http://osxdaily.com/2016/08/24/how-use-summarize-text-mac/

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