$today=get-date -format yyyMMdd $today $yesterday=(get-date).adddays(-1)|%{ if($_.month -lt 10){$month=[string]0+$_.month}else{$month=$_.month} if($_.day -lt 10){$day=[string]0+$_.day}else{$day=$_.day} [string]$_.year+[string]$month+[string]$day } $yesterday "$yesterday".replace($yesterday,$today)
yes, you are correct. i'll try to do this, it's my first steps in PS...