• Stellar App Ledger

The Mac App Store has a great selection of diverse astronomy-based apps at reasonable prices, many of them have superb 3D models of the planets and contain an astounding wealth of educational and interesting information. This article explores 10 of the best astronomy apps for the Mac.

About the App

• App name: ledger
• App description: Command-line double-entry accounting tool
• App website: http://ledger-cli.org

OS X El Capitan supports third-party tools that will be available from the Mac App Store and accessible right in the Photos app. Use multiple editing extensions from your favourite developers on a single photo, or use a mix of extensions and the editing tools built into Photos. Feb 08, 2018  If you follow these steps EXACTLY, a bad file named 'mbrcache' will be rebuilt and your Mac will reboot successfully (slowly the first time as the rebuild happens, then normal speed after that). This solution worked on my 2011-vintage 21-inch iMac (iMac 12,1) with Mac OS High Sierra.

Install the App

1. Press Command+Space and type Terminal and press enter/return key.
2. Run in Terminal app:
   ruby -e '$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)' < /dev/null 2> /dev/null
   and press enter/return key.
   If the screen prompts you to enter a password, please enter your Mac's user password to continue. When you type the password, it won't be displayed on screen, but the system would accept it. So just type your password and press ENTER/RETURN key. Then wait for the command to finish.
3. Run:
   brew install ledger

Done! You can now use ledger.

Apple didn’t introduce the App Store into Mac OS X until Snow Leopard 10.6.6. Here’s what you need to do to get the App Store. You can find out what OS X version you are on by clicking on the Apple icon, then select “About This Mac”. The number under the Apple logo is the version you are on. 10.5.x is Leopard and 10.6.x is Snow Leopard.

If you are on Leopard:

Stellar App Ledger

You first need to upgrade to Snow Leopard. You can find out how to do that at my “How to upgrade from Leopard (10.5) to Snow Leopard (10.6)” post. Once you do that, come back to this post and follow the instructions below.

If you are on Snow Leopard:

1. First click on the Apple icon in the top left corner of your screen. If you see the “App Store…” menu item then you can stop here, you already have the App Store.

2. If you don’t have the “App Store…” menu item then click on the “Software Update…” menu item.

When you click on that button, a drop-down list will appear with various operating system options. Then you should select your preferred operating system from that drop-down list. Then, you will see a button that says “Download”.

3. This will launch the Software Update dialog. Once the dialog completely loads, look for an item called “Mac OS X Update Combined”. That is the OS X update that includes the App Store, so go ahead and install that. It took about 30 minutes for me.

4. After the install is complete click on the Apple icon in the top left corner of your screen. You should now see the “App Store…” menu item. If you don’t then repeat steps 2 and 3 above until you do. If you still don’t see it then just give Apple a call at 1-800-MY-APPLE (1-800-692-7753) or stop by your nearest Apple store.

If you want to see what version you currently have installed then click the Apple icon then click the “About This Mac” menu item. That will pop up a dialog like the one below. The number below the Apple icon is the version number of the Mac OS X you have installed. Like I mentioned above, it must be 10.6.6 in order to get the App Store.

Jon