Скачать или смотреть How to Filter Files by Timespan in PowerShell

Learn how to effectively filter files by timespan in PowerShell, displaying results in a single table format with key file details.
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This video is based on the question https://stackoverflow.com/q/63911809/ asked by the user 'LangerNZ' ( https://stackoverflow.com/u/6243534/ ) and on the answer https://stackoverflow.com/a/63912360/ provided by the user 'Doug Maurer' ( https://stackoverflow.com/u/4085331/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Filter Files by Timespan in PowerShell: A Comprehensive Guide

PowerShell is a powerful tool for automating and managing tasks in Windows environments, especially when it comes to handling files and directories. One common challenge users face is filtering files based on specific criteria, such as their last write time. In this guide, we’ll explore how to filter files by timespan within a folder and its subfolders, and present the results in a clear, single table format that includes the filename, file size, and last write time.

Understanding the Problem

When you want to filter files within a specific timespan, you might run into a few issues, such as:

Your initial code may not produce the desired results.

The filtering conditions may not be applied correctly.

Results could be displayed in separate tables for each subdirectory, instead of one comprehensive view.

In the scenario we’re addressing, users often attempt to retrieve files modified within a specific timeframe but find themselves struggling with the correct implementation of PowerShell commands.

How to Solve the Problem

Step 1: Set Your Time Parameters

First, you need to define the start and end times for the range of file modifications you want to include. Here’s how to set that up in PowerShell:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Define the Parent Directory

Next, identify the directory you want to search through, including its subdirectories:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Retrieve and Filter Files

Now, use the Get-ChildItem command to filter files based on their last write time. Here is the corrected command that includes the filtering logic and ensures only files are retrieved:

[[See Video to Reveal this Text or Code Snippet]]

-File: This parameter makes sure that directories are excluded from your results.

Where-Object: This statement filters the files based on the specified last write time.

Step 4: Improving File Size Representation

By default, the Length property provided in bytes may not be user-friendly. You can modify the output to display size in megabytes (MB), formatted neatly for better readability:

[[See Video to Reveal this Text or Code Snippet]]

This command converts the file size from bytes to megabytes, formatting it to two decimal places for clarity.

Final Working Script

Combining everything from above, here’s the complete PowerShell script to filter files by timespan and display them in a single, tidy table:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Now you can effectively filter files by timespan using PowerShell, gaining valuable insights into your files all in one formatted table. Follow these steps and tweak the settings according to your specific requirements. Happy scripting!