Get-ChildItem

Basic command:

Get-ChildItem -Path "path_to_search"

Filter files with name:

PS> Get-ChildItem -Path "path_to_search" -Recurse -Filter "*string*" | Select-Object FullName

# Eg. search in the C:\ directory, for the filename that contains TEST
PS> Get-ChildItem -Path C:\ -Recurse -Filter "*TEST*" | Select-Object FullName

Reveal hidden files using the -force flag (eg. system files):

Get-ChildItem -Path "path_to_search" -Recurse -Force -ErrorAction SilentlyContinue

# Eg.
Get-ChildItem -Path "C:\Users\user\AppData\Local\Microsoft\Windows\INetCache\IE" -Recurse -Force -ErrorAction SilentlyContinue