gpsarkar/powershell to rename string in files recursive

## powershell to rename string in files recursive
Get-ChildItem -r -Depth 1 -include "web.config" |
 foreach-object { $a = $_.fullname; ( get-content $a ) |
 foreach-object { $_ -replace "oldstring","newstring" }  |
set-content $a }
	Get-ChildItem -r -Depth 1 -include "web.config" \|
	foreach-object { $a = $_.fullname; ( get-content $a ) \|
	foreach-object { $_ -replace "oldstring","newstring" } \|
	set-content $a }