#42 : How to change modified date of file using Powershell?

I always had a technique in Unix which converts modified date of a file. But never tried the same in Windows. But it was again possible in Windows using MKS Toolkit or Cygwin. There are very rare situation where you need to modified date of file. I don't want to go depth of reason, let's see
how we can do it.

DESCRIPTION

Run the below command:
ls

Directory: C:\Users\admin\Downloads


Mode LastWriteTime Length Name
---- ------------- ------ ----
-a--- 9/22/2012 9:37 PM 4750740 Setup_BullzipPDFPrinter_9_0_0_1437.zip
-a--- 9/23/2012 10:10 PM 58158 webcam-toy-photo1.jpg
-a--- 9/23/2012 10:10 PM 58158 webcam-toy-photo2.jpg


Ok, you may notice the LastWriteTime column. This column can be simply used to change the date and time.

Let's rename webcam-toy-photo2.jpg with modified date as 9/23/1942 10:10 PM.

Run the below command:

ls | where { $_.Name -eq "webcam-toy-photo2.jpg" } | foreach { $_.LastWriteTime="9/23/1942 10:10 PM" }

Let's check the date again. The date is of 1942.

ls

Directory: C:\Users\admin\Downloads


Mode LastWriteTime Length Name
---- ------------- ------ ----
-a--- 9/22/2012 9:37 PM 4750740 Setup_BullzipPDFPrinter_9_0_0_1437.zip
-a--- 9/23/2012 10:10 PM 58158 webcam-toy-photo1.jpg
-a--- 9/23/1942 10:10 PM 58158 webcam-toy-photo2.jpg


Enjoy Scripting!!