Get-Date and commonly used date format in powershell
PS C:\Users\Administrator> get-date
Thursday, June 25, 2015 9:42:24 AM
PS C:\Users\Administrator> $today = get-date
PS C:\Users\Administrator> echo $today
Thursday, June 25, 2015 9:43:21 AM
PS C:\Users\Administrator> $todayshort = get-date -format yyMMdd
PS C:\Users\Administrator> echo $todayshort
150625
PS C:\Users\Administrator> $todaylong = get-date -format yyyyMMdd
PS C:\Users\Administrator> echo $todaylong
20150625
PS C:\Users\Administrator>