Command Prompt Replace a String in the Middle of Filenames - windows

Question

I have a folder with hundreds of files in the following format:
20210322 - Filename description.txt
20210321 - Filename description.txt
20210320 - Filename description.txt
20210319 - Filename description.txt
20210318 - Filename description.txt
...
Using the Windows Command Prompt, how can I rename them to this format:
20210322 Filename description.txt
20210321 Filename description.txt
20210320 Filename description.txt
20210319 Filename description.txt
20210318 Filename description.txt
...
In other word replace, replace " - " with " ".
In the past, I've used
rename "IMG_*.jpg" "////*.jpg"
To remove "IMG_" from the beginning of filenames. I tried to do something similar, but it didn't work:
rename "* - *.txt" "*/ /.txt"

Answer 1

I found a better solution that works for me. One line, no batch file required. Using Windows Power Shell, enter:
Get-ChildItem -Recurse | ` Where-Object { $_.Name -match " - " } | ` Rename-Item -NewName { $_.Name -replace " - ", " " }
The above command will replace the given text in all filenames, including subfolders and subfiles (recursively).
I hope it's able to help someone.

Answer 2

This is easy enough using a language that is already on supported Windows systems. The -replace will remove the ' - '. When you are satisfied that the files will be renamed correctly, remove the -WhatIf from the Rename-Item command.
powershell.exe -NoLogo -NoProfile -Command ^
"Get-ChildItem -Path '.' -Filter '*.txt' |" ^
"ForEach-Object {" ^
"Rename-Item -Path $_.FullName -NewName $($_.Name -replace ' - ',' ') -WhatIf" ^
"}"
It is easier when run from a PowerShell console or as a .ps1 script.
Get-ChildItem -Path '.' -Filter '*.txt' |
ForEach-Object {
Rename-Item -Path $_.FullName -NewName $($_.Name -replace ' - ',' ') -WhatIf
}
To get a "one-liner," put the first code example above into a file such as Do-Rename.bat saved in a directory mentioned in your PATH variable. Then use a command such as:
Do-Rename