On my Mac, by default, the keyboard cannot be used to navigate and trigger dialog box buttons. To “fix” this shortcoming - enable Full Keyboard Access to use the tab key to navigate controls! But beware of downsides too...
I was recently at an office using a Ricoh Aficio multi-function printer. I downloaded the PPD Installer version 184.108.40.206 (dated 17/09/2014) for OS X 10.11 from the Ricoh Aficio MP 2510/3010/2590/3090 driver page. But no matter what I tried, the printer either could not be found or would print blank or garbled pages...
About a month ago, I discovered Apple had imposed new limitations on the free Apple Developer account. This limits the period that an app can run on your phone to 7 days (due to Provisioning Profiles) and the number of changes you can make to the project (not the source code, but Capabilities like App Groups).
Apps, even after being removed from the Launchpad or Applications sidebar in Finder, do leave preferences and other files scattered around. Where are they, typically, and how does one find them?
I discovered that Xcode includes a diff tool called FileMerge. Where is it and how do you launch it?
A short list of free tools I find useful for blogging and web development! Includes Microsoft Visual Studio Code, ImageOptim, ForkLift 2 and Commander One.
Forget the complex or manual steps, or costly tools to get screen shots scaled down from a retina display. I have a shell script that triggers an interactive window screen capture, saves the screen shot (assumed to be 2x retina display), re-sizes it to 1x and compresses the PNG further! Best of all, it does not require paid software or Automator.
Some tweaks to my OS X shell (Terminal.app) that I've found useful.