====== Windows ======

===== PowerShell =====

==== Mass Rename ====

=== One-liner (safe and explicit) ===

<code powershell>
Get-ChildItem -Filter "D10 *" | Rename-Item -NewName { $_.Name -replace '^D10', 'D8' }
</code>

**What this does:**

  * ''Get-ChildItem -Filter "D10 *"'' grabs only files starting with ''D10''
  * ''Rename-Item'' renames them
  * ''-replace '^D10', 'D8''' swaps only the leading D10, not any later occurrences

=== Dry run (optional but wise) ===

If you want to preview first, add ''-WhatIf'':

<code powershell>
Get-ChildItem -Filter "D10 *" | Rename-Item -NewName { $_.Name -replace '^D10', 'D8' } -WhatIf
</code>