I am new to scripting and Powershell, and I am trying to create a script to keep every day the log files of the 3 last days only
function RotateLog {
$dir="C:\Users\user1\Documents\Project\LOG"
$DayMax= -3
$CurrentDate= Get-Date -uformat "%d-%m-%Y-%H%M"
$DatetoDelete= (get-date -UFormat "%d-%m-%Y-%H%M").AddDays($DayMax)
get-childitem -path $dir -filter "YYYY-mm-dd-*.LOG"
foreach-object {
if ($_.LastWriteTime -lt $DatetoDelete)
{remove-item}
}
}
When I run $DatetoDelete it returns failed because [System.String] does not contain a method named 'AddDays'.
So I tried to replace the variable by
$dtt=(get-date).AddDays($DayMax)
It is working this way, but I need to get the format . How can I do it ?
Another problem, when I run the command remove-item, it returns cmdlet remove-item at command pipeline position 1
Supply values for the following parameters:path[0]
What does it mean ?
The -Format and -UFormat parameters make Get-Date output a string representation of the corresponding [datetime] object, and "adding -3 days to a string" doesn't make much sense.
Use Get-Date without a format parameter to get a [datetime] object that can be meaningfully modified and compared instead:
# Get current date and time as a [datetime] object
$CurrentDate = Get-Date
# Here I reference the `Date` property on our DateTime object
# this gives us the same date, but at 00:00 local time
$DateToDelete = $CurrentDate.Date.AddDays($DayMax)
Now, $_.LastWriteTime -lt $DatetoDelete makes a lot more sense, as we're comparing [datetime] to [datetime] rather than to a formatted string