Last modification Date file system by creating a script - sql

Question

I need to create an script or query to give me the last modification date of a file system. I have the below query and it works perfectly for an overwitted backup file. but I need to run it for *.bak that shows me the latest backup file modification date during many backup files:
--
if exists(select 1 from tempdb..sysobjects where name='##tmp')
drop table ##tmp
create table ##tmp(mdate varchar(8000))
insert ##tmp
exec master.dbo.xp_cmdshell 'dir g:\SQL_Backup\filename.bak' -- (I need the --last backup file name which the name keep changing every week)
set rowcount 5
delete from ##tmp
set rowcount 0
select top(1) substring(mdate,1,20) as 'Last modified date' from ##tmp

Answer 1

I've never worked with these views, so this really need a reality check before you really integrate it, but this may help:
select
top 1 backupSetName = bs.name,
backupFilePath = bf.physical_name,
backupFileLogicalName = bf.logical_name,
bs.backup_start_date,
bs.backup_finish_date
from msdb.dbo.backupfile bf
join msdb.dbo.backupSet bs on bf.backup_set_id = bs.backup_set_id
where right(bf.physical_name,4) = '.mdf'
order by backup_finish_date desc;
"Backup Set" records the actual dates. Since it is one-to-many with "Backup Files", it means that the '.mdf' and '.ldf' file dates are recorded together. I just excluded the latter in the above output.

Answer 2

I can run the PowerShell script and store in in sql server job. It ran successfully.
$source = "\00.0.00.00\your file location"
$filetype = "dif" (or "bak")
Get-ChildItem "$source*" -Include "*.$filetype" | sort LastWriteTime | select -last 1
$datetime=[datetime]::Today
if($datetime.DayOfWeek -match 'Monday'){
Write-Host "YES"
}elseif($datetime.DayOfWeek -match 'Tuesday|Thursday|Saturday'){
Write-Host "NO"
}else{
Write-Host "YES"
}