powershell - Increment using 2 digit number -

i have following code append incremental number beggining of each filename. how can make start 01 instead of 1.

$files = get-childitem "c:\test"  $i = 1 foreach ($file in $files) {     $newname = "$i" + $file     rename-item $($file.fullname) $newname     $i++ } 

several ways this, use -f (format) operator.

here's how i'd write in pipeline:

 get-childitem "c:\test" | foreach-object -begin { $i=1 } {      rename-item $_ -newname ("{0:d2}{1}" -f ($i++, $_.name))      }  

p.s. forget it's possible eliminate foreach-object using delay-bind scriptblock. comes in particularly handy rename-item:

$i = 1  get-childitem "c:\test" |      rename-item -newname {"{0:d2}{1}" -f ($i++, $_.name)}