CompTIA A+ Certification All-in-One Exam Guide

Just in case you want to know what each piece of that string in the cmdlet
means, here’s the scoop: Get-ChildItem is the main command. The dot (.)
indicates the current directory, while –Include tells the command to fetch the
file type indicated next, in this case *.jpg. –Recurse means go into every
subdirectory, and –Force retrieves hidden and system files too. It’s like dir on
steroids!
This is just scratching the surface with what you can do with PowerShell.
If you want to give it a try yourself, simply type powershell in the Search bar
and press ENTER. Good luck!
Assorted macOS and Linux Commands
macOS and Linux have a massive number of built-in command-line utilities
and probably hundreds of thousands of easily accessed and installed thirdparty
tools that work amazingly well. In fact, one of the most interesting
challenges to Terminal is that for almost any job, there is more than one tool
for the job (see the vi command, later). What you are going to see here are the
commands listed by the CompTIA A+ objectives—you could spend the rest
of your life learning all of the Terminal commands!
NOTE The first and second commands below are ifconfig and iwconfig,
very network-specific Terminal commands. If you don’t have a good grasp
on networking yet, skip these commands until after you read Chapters 18
through 21. Then come back to them.
ifconfig
The ifconfig command enables you to view and change the settings for your
network connections. Running ifconfig shows the following output (yours
will certainly be different):