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The Ingram MAC-11 (Military Armament Corporation Model 11) is a subcompact machine pistol/submachine gun developed by American gun designer Gordon Ingram at the Military Armament Corporation (MAC) during the 1970s in Powder Springs, Georgia. This document is a Mac OS X manual page. Manual pages are a command-line technology for providing documentation. You can view these manual pages locally using the man(1) command. These manual pages come from many different sources, and thus, have a variety of writing styles. Depending on which computer you’re installing on, the size of the OS will vary. Generally for an installation the minimum space requirement is 8GB. I try to keep more free space than that, but I have a MacBook Pro so it takes up less space than my.

42 Astoundingly Useful Scripts and Automations for the Macintosh

2019 August 23/6:00 AM

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Work faster and more reliably. Add actions to the services menu and the menu bar, create drag-and-drop apps to make your Macintosh play music, roll dice, and talk. Create ASCII art from photos. There’s a script for that in 42 Astounding Scripts for the Macintosh.

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What Size For Mac

If you use the print to PDF feature in Mac OS X, you have probably noticed that it can create some really large PDF files. This is fine as long as you are copying them to CD or DVD, but if you’re putting them on the web or sending them through e-mail, they can really cause havoc on both ends.

If you open the PDF in Preview, you can reduce the file size by doing a “Save As..” and choosing, appropriately, Reduce File Size from the Quartz Filter menu. Often, that will be fine. But the way that it reduces the file size is by saving all images as JPEGs of middle quality. Sometimes that quality will not be enough.

I just finished a Persistence of Vision tutorial, and because it’s a tutorial on using a 3-D raytracer it was full of images. The PDF file was nearly 20 megabytes. After saving it with Reduce File Size, it was down to under one megabyte.. but the quality of the images was so bad that they didn’t serve to illustrate the concepts in the text.

It was obvious what was happening, and I knew that when saving JPEG files you are allowed to trade off low file size with increased quality. But there was no slider available in the Quartz Filter menu to increase the quality of the image.

The answer, it turns out, is in ColorSync Utility in the Utilities folder off of the Applications folder. ColorSync Utility can create new Quartz filters. Open up ColorSync Utility and switch to the “Filters” pane. This will list all of the filters that you currently have available.

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  1. In the lower left, click on the “+” button. This creates a new filter.
  2. Give the filter a name, and press return.
  3. To the right of the filter’s name, choose the down arrow. A menu will pop up.
  4. From the pop-up menu, choose “Add Image Effects Component”, and from that menu choose “Image Compression”.
  5. Adjust the image compression Mode to JPEG.
  6. Adjust the image compression quality however you prefer.
  7. The next time you use Preview to “Save As..”, you'll have a new option under Quartz filters.

I’ve created a Reduced File Size High Quality and Mid-Quality as custom Quartz filters.

With the quality slider three quarters over, the file size dropped to 7.7 megabytes. This is quite a bit larger than with the slider half-way over, but not nearly the 20 megabytes of the original. And quality became a lot higher.

Filter while printing

You can also filter while printing, avoiding the need to re-open the PDF in Preview. When you go to print, pull down the menu just below “Presets” that usually says “Copies & Pages”. Choose “ColorSync”. Then choose the Quartz filter that you want. Once you’ve chosen it, you can also pull down the Presets menu and do a “Save As..” to remember these settings.

February 16, 2012: Quality compressed PDFs in Mac OS X Lion

Save As… has been renamed to Export in Lion’s Preview.

I’ve verified that these instructions for using Preview to compress PDFs continue to work in Mac OS X Lion.

One minor problem is that the last paragraph—that you can even “filter while printing” without using Preview is no longer true, but it wasn’t true in Snow Leopard either. I can’t remember if it worked in Leopard or if it last worked in Tiger.

I took some screenshots but haven’t included them here; they really are exactly the same as when I wrote those instructions. The only real difference is that in Lion, “Save As…” has been renamed “Export…”.

The main issue, as Vinnie pointed out in the comments is that after you create the filter it doesn’t automatically show up in Preview’s list of Quartz filters. Either ColorSync or Preview is working from the wrong folder.

ColorSync saves your filters in your personal “Filters” folder under your “Library”. But Preview looks in “PDF Services” for the filters. Copy or move the new filter from your Library’s “Filters” folder to your Library’s “PDF Services” folder. If you want to make the filter available to everyone who uses your Mac, put it in the main “/Library/PDF Services” folder instead. Note that Lion has hidden the Library folder, so you’ll need to use the “Go” menu and “Go to folder…” to go to your “Library” folder, and also to go to the “/Library”, depending on whether you are making it available for yourself or for everyone.

Further note that Preview in Lion, but not Snow Leopard, (sometimes? always?) has problems finding Quartz filters inside your own PDF Services folder, so you may have to always put it in the main Library’s PDF Services folder instead. Oddly, the Print dialog doesn’t have any problem with this, only Preview.

This will work in Snow Leopard as well—and will sort of bring back the ability to use the filter directly while printing to PDF. The filters will be available under the PDF menu; on choosing a Quartz filter, it will immediately save the current document as a PDF. The Mac doesn’t seem to ask for a filename, and just deposits it on the Desktop, though some of that may have to do with settings on my computer.

Persistence of Vision tutorial
A step-by-step tutorial, available under the Gnu Free Documentation License, on using the Persistence of Vision raytracer.

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Arranging windows on Mac OS X is tedious and imprecise. Even after dragging, pulling, and, re-dragging windows, you end up with inefficient use of your available screen real estate. SizeUp will help you quickly resize and position your windows to make optimal use of. Offering more than 100 shades of professional quality cosmetics for All Ages, All Races, and All Genders. Enjoy free shipping and returns on all orders. Explore the world of Mac. Check out MacBook Pro, iMac Pro, MacBook Air, iMac, and more. Visit the Apple site to learn, buy, and get support. A media access control address (MAC address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth.Within the Open Systems Interconnection (OSI) network model, MAC addresses are used in the medium access. Set Default Finder Window Size In Mac OS X, Here’s How By Paul Morris August 10th, 2015 Finder is undoubtedly one of the most commonly used applications within Mac OS X. Finder affords you the ability to navigate through all of the files and folders that are stored on your machine.

What Size For Mac

Optimised Storage in macOS Sierra and later* can save space by storing your content in iCloud and making it available on demand. When storage space is needed, files, photos, films, email attachments and other files that you rarely use are stored in iCloud automatically. Each file stays exactly where you last saved it, and will download when you open it. Files that you’ve used recently remain on your Mac, along with optimised versions of your photos.

* If you haven't yet upgraded to macOS Sierra or later, learn about other ways to free up storage space.

Find out how much storage is available on your Mac

Choose Apple menu  > About This Mac and then click Storage. Each segment of the bar is an estimate of the storage space used by a category of files. Move your pointer over each segment for more detail.

Click the Manage button to open the Storage Management window, pictured below. This button is only available in macOS Sierra or later.

Manage storage on your Mac

The Storage Management window offers recommendations for optimising your storage. If some recommendations have already been turned on, you will see fewer recommendations.


Store in iCloud

Click the Store in iCloud button and then choose from these options:

  • Desktop and Documents. Store all files from these two locations in iCloud Drive. When storage space is needed, only the files you recently opened are kept on your Mac, so that you can easily work offline. Files stored only in iCloud show a download icon , which you can double-click to download the original file. Learn more about this feature.
  • Photos. Store all original, full-resolution photos and videos in iCloud Photos. When storage space is needed, only space-saving (optimised) versions of photos are kept on your Mac. To download the original photo or video, just open it.
  • Messages. Store all messages and attachments in iCloud. When storage space is needed, only the messages and attachments you recently opened are kept on your Mac. Learn more about Messages in iCloud.

Storing files in iCloud uses the storage space in your iCloud storage plan. If you reach or exceed your iCloud storage limit, you can either buy more iCloud storage or make more iCloud storage available. iCloud storage starts at 50 GB for $0.99 (USD) a month, and you can purchase additional storage directly from your Apple device. Learn more about prices in your region.

Optimise Storage

Click the Optimise button, then choose from these options.

  • Automatically remove watched films and TV programmes. When storage space is needed, films or TV programmes that you have purchased from the iTunes Store and have already watched will be removed from your Mac. Click the download icon next to a film or TV programme to download it again.
  • Download only recent attachments. Mail automatically downloads only the attachments that you have recently received. You can manually download any attachments at any time by opening the email or attachment, or saving the attachment to your Mac.
  • Don't automatically download attachments. Mail only downloads an attachment when you open the email or attachment, or save the attachment to your Mac.

Optimising storage for films, TV programmes and email attachments doesn't require iCloud storage space. Best software to backup mac.

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Empty Bin Automatically

Empty Bin Automatically permanently deletes files that have been in the Bin for more than 30 days.

Reduce Clutter

Reduce Clutter helps you to identify large files and files you may no longer need. Click the Review Files button and then choose any of the file categories in the sidebar, such as Applications, Documents, Music Creation or Bin.

You can delete the files in some categories directly from this window. Other categories show the total storage space used by the files in each app. You can then open the app and decide whether to delete files from within it.

Learn how to re-download apps, music, films, TV programmes and books.

Where to find the settings for each feature

The button for each recommendation in the Storage Management window affects one or more settings in other apps. You can also control these settings directly within each app.

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  • If you're using macOS Catalina, choose Apple menu  > System Preferences, click Apple ID, then select iCloud in the sidebar: Store in iCloud turns on the Optimise Mac Storage setting on the right. Then click Options next to iCloud Drive: Store in iCloud turns on the Desktop & Documents Folders setting. To turn off iCloud Drive entirely, deselect iCloud Drive.
    In macOS Mojave or earlier, choose Apple menu > System Preferences, click iCloud and then click Options next to iCloud Drive. Store in iCloud turns on the Desktop & Documents Folders and Optimise Mac Storage settings.
  • In Photos, choose Photos > Preferences and then click iCloud. Store in iCloud selects iCloud Photos and Optimise Mac Storage.
  • In Messages, choose Messages > Preferences, then click iMessage. Store in iCloud selects Enable Messages in iCloud.
  • If you're using macOS Catalina, open the Apple TV app, choose TV > Preferences from the menu bar and then click Files. Optimise Storage selects “Automatically delete watched films and TV programmes”.
    In macOS Mojave or earlier, open iTunes, choose iTunes > Preferences from the menu bar and then click Advanced. Optimise Storage selects “Automatically delete watched films and TV programmes”.
  • In Mail, choose Mail > Preferences from the menu bar and then click Accounts. In the Account Information section on the right, Optimise Storage sets the Download Attachments menu to either Recent or None.

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Empty Bin Automatically: From the Finder, choose Finder > Preferences, then click Advanced. Empty Bin Automatically selects “Remove items from the Bin after 30 days”.

Other ways that macOS automatically helps to save space

With macOS Sierra or later, your Mac automatically takes these additional steps to save storage space:

  • Detects duplicate downloads in Safari, keeping only the most recent version of the download
  • Reminds you to delete used app installers
  • Removes old fonts, languages and dictionaries that aren't being used
  • Clears caches, logs and other unnecessary data when storage space is needed

How to free up storage space manually

Even without using the Optimised Storage features of Sierra or later, you can take other steps to make more storage space available:

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  • Music, films and other media can use a lot of storage space. Learn how to delete music, films and TV programmes from your device.
  • Delete other files that you no longer need by moving them to the Bin, then emptying the Bin. The Downloads folder is good place to look for files that you may no longer need.
  • Move files to an external storage device.
  • Compress files.
  • Delete unneeded email: In the Mail app, choose Mailbox > Erase Junk Mail. If you no longer need the email in your Deleted Items mailbox, choose Mailbox > Erase Deleted Items.

Reduce Pdf File Size Mac

Learn more

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  • The Storage pane of About This Mac is the best way to determine the amount of storage space available on your Mac. Disk Utility and other apps may show storage categories, such as Not Mounted, VM, Recovery, Other Volumes, Free or Purgeable. Don't rely on these categories to understand how to free up storage space or how much storage space is available for your data.
  • When you duplicate a file on an APFS-formatted volume, that file doesn't use additional storage space on the volume. Deleting a duplicate file only frees up the space required by any data that you might have added to the duplicate. If you no longer need any copies of the file, you can recover all of the storage space by deleting both the duplicate and the original file.
  • If you're using a pro app and Optimise Mac Storage, learn how to make sure that your projects are always on your Mac and able to access their files.

Different Sizes Of Big Macs