Command Line

The command line interface is an alternate method of interacting with OS X, relying on text based command entry to execute commands and perform tasks. It is accessed on the Mac by using the Terminal application. Generally, the command line is considered advanced, and thus it’s usage tends to be more complex than many standard procedures on a Mac.

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How to Show & Verify Code Signatures for Apps in Mac OS X

Mar 14, 2016 - 3 Comments
Check and verify code signing of apps in Mac OS X

Code signed applications allow security conscious users to verify the creator and hash of a particular app to help confirm it has not been corrupted or tampered with. This is rarely necessary for average Mac users, particularly those who obtain their software from the Mac App Store or other trusted sources since the apps are … Read More

How to Change Launchpad Icon Grid Layout in Mac OS X

Mar 9, 2016 - 14 Comments
Change the Launchpad grid icon count in Mac OS X

Launchpad is the quick application launcher available from the Mac OS X Dock and a keystroke that looks quite a bit like the Homescreen of iOS. By default, the Launchpad app grid usually displays icons in 7 rows and 5 columns of apps, but with a little adjustment from the command line of OS X … Read More

Get a Calendar from Command Line for Any Date, Month, Year

Feb 24, 2016 - 9 Comments
Get a calendar from the command line of Mac OS X

Though just about everyone has our phones glued to us with a dedicated calendar app, for users who spend considerable time in the command line it can be more efficient to stay put rather than stray to another app or pick up a different device to flip around in the calendar and find a given … Read More

Get Weather Reports from the Command Line with finger

Feb 18, 2016 - 21 Comments
Get weather forecast from the command line with finger

There’s no shortage of methods to retrieve a weather report, the web is full of weather resources, everyones iPhone, Apple Watch, and smartphone has a weather app, Siri can tell you the weather, and you can even get the current weather in the menu bar of OS X or from Spotlight on the Mac too. … Read More

How to View & Clear the Mac NVRAM Contents from Terminal in OS X

Dec 16, 2015 - 1 Comment
Terminal in OS X

Advanced Mac users may find it necessary to view or directly manipulate firmware variables found within NVRAM on the computer. Typically the NVRAM contains specific system data about things like the system audio level, startup disk details, an active user name, screen backlighting and resolution, and other technical details. While most users have no business … Read More

Get MacBook Battery Life Percent Time Remaining from Command Line in Mac OS X

Dec 10, 2015 - 2 Comments
Get Mac Battery Life from the Command Line in OS X

While most Mac laptop users will rely on the battery percentage indicator found in the menu bar of OS X, those who spend a lot of time at the command line may find it useful to know that MacBook battery life and battery charge percentage remaining information can be retrieved directly from the Terminal in … Read More

How to Flush DNS Cache in OS X El Capitan

Nov 16, 2015 - 17 Comments
Terminal in OS X

If you adjust DNS settings on a Mac and the changes seemingly haven’t taken effect, or perhaps you discover that a given name server address is not resolving as intended, flushing the DNS cache is often a quick resolution. Flushing DNS cache in OS X El Capitan (10.11 or later) is easily possible with a … Read More

How to Verify & Repair Permissions in OS X El Capitan

Nov 4, 2015 - 54 Comments
verify-repair-permissions-mac-os-x-command-line1

The Disk Utility app has long contained the ability to verify and repair disk permissions on a Mac, but in the latest versions of OS X this ability has been removed. That doesn’t mean you can’t verify permissions and repair permissions in OS X El Capitan 10.11 and later however, you just need to turn … Read More

How to Enable TRIM on Third Party SSDs in Mac OS X with trimforce

Oct 29, 2015 - 32 Comments
Using trimforce to enable TRIM in Mac OS X

For Mac users who utilize third party SSD volumes, the new trimforce command allows OS X to forcibly enable the TRIM function on those drives. trimforce is built directly into newer releases of OS X and is really quite easy to enable (or disable), requiring a quick visit to the command line and a reboot … Read More

How to Use “Secure Empty Trash” Equivalent in OS X El Capitan

Oct 12, 2015 - 42 Comments
Secure Empty Trash equivalent in OS X

Many Mac users have noticed that the Secure Empty Trash feature has been removed in OS X El Capitan (10.11 or later), the reason the feature was removed is basically because it did not work all the time, but more on that in a moment. First, let’s cover how you can perform the equivalent of … Read More

How to Disable System Integrity Protection (rootless) in OS X El Capitan

Oct 5, 2015 - 69 Comments
Enable or Disable System Integrity Protection Rootless in Mac OS X

Apple has enabled a new default security oriented featured called System Integrity Protection, often called rootless, in OS X 10.11 onward. The rootless feature is aimed at preventing Mac OS X compromise by malicious code, whether intentionally or accidentally, and essentially what SIP does is lock down specific system level locations in the file system … Read More

How to Make Apache Start httpd Automatically on Boot in Mac OS X

Aug 30, 2015 - 3 Comments
Start Apache in Mac OS X Automatically

Mac based web developers are probably familiar with manually starting and stopping the Apache web server in OS X through the command line by now, but if you want Apache to start itself automatically upon boot and reboot of a Mac, you’ll want to go a step further and use launchctl. By doing so, webdevs … Read More

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