Replace "." with "_" in file name

Question

I am using PowerShell to replace pdf file names:

Get-ChildItem -Path C:\All -Filter *.pdf | Rename-Item -NewName { $_.Name.Replace('.','_') }

It works fine if I replace %20 to _, but if we use "test.one.pdf", I need "test_one.pdf" as output, if I use above syntax it replaces the . before pdf like "test_one_pdf".

Answer 1

Your code will rename name.001.pdf to name_001_pdf, so unless you actually want to remove the extensions of your files you need to replace only within the files name and not the extension.

Get-ChildItem -Path "C:\All" -Filter "*.pdf" | Rename-Item -NewName { $_.BaseName.Replace(".","_") + $_.Extension }