If you need to find helper files that are stored in the same folder, you may want to know where a given script is stored. The automatic variable...
powertips
Finding the Current User
Should you try and use PowerShell as a log-on script, you may want to know who is actually running the script to access user specific folders or...
Outputting Calculated Properties
Format-Table is a very convenient cmdlet to output data as table. You can pick the object properties you want to output like this: Dir |...
Finding Old Files
Occasionally, you might want to find files that are older than a give number of days to delete or backup those. A simple filter can provide that...
Working with Arrays
Creating arrays in PowerShell is easy using the comma delimiter. The next line creates an array with five elements: $myArray = 'Hello', 12,...
Converting Results into Arrays
Whenever you call a function or cmdlet, PowerShell uses a built-in mechanism to handle results: If no results are returned, PowerShell returns...
Finding Duplicate Files
Hash Tables are a great way to find duplicates. Simply use the Hash Table as lookup to see if the file (or element) was already added to the Hash...
Converting Hash Tables to Objects
Hash Tables are convenient but are not true objects. This is bad because you are unable to output the hash content to formatting cmdlets or export...
Sorting Hash Tables
Hash Tables store key-value pairs, and you normally cannot sort its content. Let's define a Hash Table first to examine this: $hash =...
Using Hash Tables
Hash Tables are a great way to organize data. A hash table stores key-value-pairs. To create a new hash table variable, try this: $person = @{} You...
Strongly Typed Variables
Unless you override how PowerShell stores variable content, you may find that PowerShell does not automatically pick the best type. For example,...
Permanent Changes to Environment Variables
You can easily manage environment variables with the predefined env: drive. For example, to add a new environment variable, type this: $env:launched...
Making Variables Constant
If you need to write more robust scripts, it makes sense to write-protect certain variables. Whenever you want a variable to set its content as...
Add Descriptions to Variables
Keeping track of a variable’s purpose can be accomplished by assigning a clear text description: $ip = '10.10.10.10' Set-Variable ip...
Assigning Variables
With PowerShell, you can assign values to multiple variables. For example, to initialize three variables to the same default value, use this: $a =...