如何将校验和添加到 Get-ChildItem -Recurse？

Question

I've been using a very simple Get-ChildItem -Recurse command to generate a CSV inventory of a file directory for appraising said files for retention/deletion. I'm very new to PowerShell and I'm trying to keep the code as simple as possible, here is what I've been successfully using:

Get-ChildItem -Recurse | Select-Object FullName, Name, Extension, Length, CreationTime, LastAccessTime, LastWriteTime | Export-Csv "C:\file\path\file_list.csv"

But I would like to add a checksum to the Select-Object, I tried the following code but it created a CSV with only the checksum and no other file data. The checksum should be a column in the CSV next to the other Select-Object parameters.

Get-ChildItem -Recurse | Get-FileHash -Algorithm MD5 | Select-Object FullName, Name, Extension, Length, CreationTime, LastAccessTime, LastWriteTime, Hash | Export-Csv "C:\file\path\file_list.csv"

Any help is greatly appreciated, I'm VERY new to PowerShell, thanks!

Answer 1

Since you want to add it as an additional property, you can use a calculated property like this.

Get-ChildItem -Recurse |
    Select-Object FullName, Name, Extension, Length, CreationTime, LastAccessTime, LastWriteTime, @{n="Hash";e={(Get-FileHash $_.FullName -Algorithm MD5).hash}} |
        Export-Csv "C:\file\path\file_list.csv"

To make it easier to read and maintain, you could use a variable to hold the desired properties like this.

$props = "FullName",
         "Name",
         "Extension",
         "Length",
         "CreationTime",
         "LastAccessTime",
         "LastWriteTime",
         @{n="Hash";e={(Get-FileHash $_.FullName -Algorithm MD5).hash}}

Get-ChildItem -Recurse | Select-Object $props | Export-Csv "C:\file\path\file_list.csv"