Bijay Kumar 
Managing files on Windows systems often involves organizing, archiving, or cleaning up folders based on file dates. For example, you might want to move files older than 30 days to an archive folder, separate last month’s reports, or relocate recently created files to another directory for processing. This is where PowerShell becomes extremely helpful. PowerShell … Read more
You know what’s annoying? Staring at a PowerShell window filled with endless lines of white text on a blue background, trying to figure out which messages are errors, which are warnings, and which are just informational notes. I’ve been there. Running a script and missing a critical warning because everything looks the same. Or worse, … Read more
One of my team members was trying to check if a process is running in their system. PowerShell is best suitable for this. Today, I’m going to show you exactly how to check if a process is running using PowerShell. We’ll start with the basics and work our way up to some really practical examples … Read more
The question mark operator in PowerShell usually means the ternary operator, condition ? valueIfTrue : valueIfFalse. It picks one of two values in a single line, and it needs PowerShell 7 or later: Output: PowerShell also uses the question mark in ??, ??=, ?., as an alias and in $?. I cover each one below, … Read more
To loop through a CSV file in PowerShell, read it with Import-Csv and use a foreach loop. Each row becomes an object, and each column header becomes a property: Output: The file customers.csv has the columns Id, Name, Company, State and Total, with four customers. I use it in every example below. I ran each … Read more
If you’ve been using PowerShell for a while, you’ve probably noticed it remembers every command you’ve typed. That’s usually handy—until it’s not. Maybe you accidentally typed a password in plain text. Or perhaps your history is so cluttered you can’t find anything useful anymore. Whatever the reason, clearing your PowerShell history is simpler than you … Read more
If you’ve been working with PowerShell for a while, you’ve probably run into situations where you need to see what properties an object has. Today, I’m going to walk you through everything you need to know about getting all properties of an object in PowerShell. We will see different methods with examples. When you run … Read more
You know that moment when you need to convert dozens of Excel files to CSV format, and you’re thinking, “Great, I’ll be clicking ‘Save As’ for the next hour”? Yeah, I’ve been there too. Maybe you’re a data analyst who needs to feed CSV files into a database. Or perhaps you’re working with legacy systems … Read more
To check if a port is open using PowerShell, run Test-NetConnection with the host name and port. -InformationLevel Quiet returns just True or False: Output: That’s perfect for one check, but it can take 20 seconds or more when the port is closed. Below I show a faster check with a timeout, a reusable function, … Read more
Are you getting an error “Cannot index into a null array” in PowerShell? If yes, this is probably you’re trying to grab something from a container that doesn’t exist (or is empty). In this tutorial, I will explain what causes the “cannot index into a null array” error and how to fix it. Understanding the … Read more
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