能否将这段PowerShell脚本改写为无分号的单行命令？

Absolutely fun challenge—let's turn that multi-line script into a single, semicolon-free command using PowerShell's pipeline and nested expressions, no temporary variables needed:

Get-Mailbox "a mailbox" | ForEach-Object { Get-MailboxFolderPermission -Identity "$($_.PrimarySmtpAddress):\$(Get-MailboxFolderStatistics $_.PrimarySmtpAddress | Where-Object FolderType -eq 'Calendar' | Select-Object -First 1 -ExpandProperty Name)" -ErrorAction SilentlyContinue | Select-Object @{Label="Identity";Expression={$_.Identity}},@{Label="User";Expression={$_.User}},@{Label="AccessRights";Expression={$_.AccessRights}}}

Breakdown of how this works (for learning purposes): #

• We start with Get-Mailbox "a mailbox" to fetch the target mailbox object, then pipe it directly to ForEach-Object (no need for the $mbx variable)
• Inside the ForEach-Object block, we build the calendar folder identity using nested subexpressions ($()):
  • $_.PrimarySmtpAddress pulls the mailbox's email address from the piped object
  • The nested Get-MailboxFolderStatistics call filters for the first Calendar-type folder, using -ExpandProperty Name to grab just the folder name string instead of an object
• We pass that constructed identity to Get-MailboxFolderPermission (with silent error handling as in your original script)
• Finally, we pipe to Select-Object with calculated property definitions (I filled in logical labels based on your partial script—adjust these to match your exact needs!)

This works because PowerShell's pipeline handles passing objects between commands, and nested subexpressions let us embed command output directly into strings or parameters—no semicolons required to separate statements.

内容的提问来源于stack exchange，提问作者Niklas J. MacDowall