Test Internet connection speed from command line (Terminal
Test your Internet connection speed using Mac OS X Terminal command line
Extracting RAR archives in the command line on Mac OS X
Instructions on how to use free command line tools in Terminal to extract RAR archives on Mac OS X, updated through to version 10.10.x Yosemite.
Repair damaged RAR files on Mac OS X
Here is an easy and free way to repair complete yet corrupt RAR archive files. It’s done in the command line of Terminal using some powerful free RAR utilities.
Find DNS server IP from command line
Here are the command line / Terminal.app commands you can use to retrieve the active DNS server IP addresses on any Mac. Launch the Terminal (Command-space for Spotlight, then type in Terminal). Type or paste in the following command: Mac OS X 10.7 Lion: networksetup...