For a check i need yesterday's date at 10:00pm in a variable.
I get yesterdays Date and current Time with
$a = (get-date).AddDays(-1)
But how do i manipulate the time to 22.00 and leave the variable still as Date-Object?
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powershell
I see this topic, but in my case I was looking for a way to improve the format. Using UFormat and adding -1 day
(get-date (get-date).addDays(-1) -UFormat "%Y%m%d-%H%M")
Format in other syntax is possible in this way
[DateTime]::Today.AddDays(-1).ToString("yyyyMMdd")
I saw in at least one other place that people don't realize Date-Time takes in times as well, so I figured I'd share it here since it's really short to do so:
Get-Date # Following the OP's example, let's say it's Friday, March 12, 2010 9:00:00 AM
(Get-Date '22:00').AddDays(-1) # Thursday, March 11, 2010 10:00:00 PM
It's also the shortest way to strip time information and still use other parameters of Get-Date. For instance you can get seconds since 1970 this way (Unix timestamp):
Get-Date '0:00' -u '%s' # 1268352000
Or you can get an ISO 8601 timestamp:
Get-Date '0:00' -f 's' # 2010-03-12T00:00:00
Then again if you reverse the operands, it gives you a little more freedom with formatting with any date object:
'The sortable timestamp: {0:s}Z{1}Vs measly human format: {0:D}' -f (Get-Date '0:00'), "`r`n"
# The sortable timestamp: 2010-03-12T00:00:00Z
# Vs measly human format: Friday, March 12, 2010
However if you wanted to both format a Unix timestamp (via -u aka -UFormat), you'll need to do it separately. Here's an example of that:
'ISO 8601: {0:s}Z{1}Unix: {2}' -f (Get-Date '0:00'), "`r`n", (Get-Date '0:00' -u '%s')
# ISO 8601: 2010-03-12T00:00:00Z
# Unix: 1268352000
Hope this helps!
When I was to get yesterday with just the date in the format Year/Month/Day I use:
$Variable = Get-Date((get-date ).AddDays(-1)) -Format "yyyy-MM-dd"
Yet another way to do this:
(Get-Date).AddDays(-1).Date.AddHours(22)
(Get-Date (Get-Date -Format d)).AddHours(-2)
Source: Stackoverflow.com