This line dose a fine job of renaming my file but it only use the hours 00-12 and not 13-24. After 12 it begins with 01. Sins it does not append AM or PM you cant know bu just looking at the file name when it was created. I would like it to use 24h format.
dir C:\script\logged_in_users-.csv | Rename-Item -NewName {$_.BaseName+(Get-Date -f yyyy-MM-dd-hh)+$_.Extension}
In your format string, use HH instead of hh, to output hours in 24-hour format.
Swap hh for HH for 24-hour clock timestamp.
See: http://technet.microsoft.com/en-us/library/ee692801.aspx
Related
I need to find the previous hour time with formatting with PS:
I need the below format:
"yyyy-MM-dd-HH:mm:sstt")
I can use the below code to get the date and time in this format:
(Get-Date -Format "yyyy-MM-dd-HH:mm:sstt")
2019-09-17-08:45:27AM
I need to get the previous hour time but in the above format
I know how to get the last hour time :
(Get-Date).AddHours(-1)
How can i get the previous hour time with a combination of the above
Format?
Using -f, the format operator, as shown in Ivan Mirchev's helpful answer is definitely an option, and -f is a great general-purpose formatting option to know about, for any data type.
However, in your particular case there is a simpler solution, because the .ToString() method of [datetime] instances directly accepts a format string:
(Get-Date).AddHours(-1).ToString('yyyy-MM-dd-HH:mm:sstt')
You may try using the format operator:
"{0:yyyy-MM-dd-HH:mm:sstt}" -f (get-date).AddHours(-1)
more details: https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_operators?view=powershell-6#format-operator--f
Hope it helps! :)
The actual line in the PowerShell script that is desired is:
$tsd = [datetime]::ParseExact($TSDiff,'yyyyMMddhhmmsstt',$null)
But the $TSDiff variable being used has time expressed as, without AM/PM:
20171023212800
This is a 24-hour format where 11 pm is represented by 23. It was retrieved using an FTP request which seems to only return 24 hour format strings without AM/PM.
Breaking this down, the following PowerShell command works:
[datetime]::ParseExact("20171023092800",'yyyyMMddhhmmss',$null)
But the following PowerShell command does not work:
[datetime]::ParseExact("20171023212800",'yyyyMMddhhmmss',$null)
The reason the second line doesn't work is clear; the hour digits are in 24-hour format, as in the $TSDiff listed at the beginning of this post.
Is there a simple way in PowerShell to convert the string 20171023212800 to 20171023092800PM?
From Formatting Dates and Times
[...]
h, %h - The hour in a 12-hour clock. Single-digit hours will not have a leading zero. Specify %h if the format pattern is not combined with other format patterns.
hh - The hour in a 12-hour clock. Single-digit hours will have a leading zero.
H, %H - The hour in a 24-hour clock. Single-digit hours will not have a leading zero. Specify %H if the format pattern is not combined with other format patterns.
HH - The hour in a 24-hour clock. Single-digit hours will have a leading zero.
[...]
While you are converting your datetime string to a 12-hour formatted string with hh in the format specifier, it will convert to a 24-hour string with HH in it like:
[datetime]::ParseExact("20171023212800",'yyyyMMddHHmmss',$null)
Use:
# Method 1. Use HH for 24-hour format like TessellatingHeckler proposes
[datetime]::ParseExact("20171023212800", 'yyyyMMddHHmmss', $null)
# Method 2. If you are not sure your string is
# date, use TryParse with the same format
[datetime]$dirDate = New-Object DateTime
if ([DateTime]::TryParseExact(
'20171023212800',
'yyyyMMddHHmmss',
[System.Globalization.CultureInfo]::InvariantCulture,
[System.Globalization.DateTimeStyles]::None,
[ref]$dirDate))
{
$dirDate
}
I am trying to create a timestamp string in the format:
yyyymmddhhmmssfff
where f is milliseconds.
Example: 20171013180359235
So far I have
[string]$Date = Get-Date -UFormat "%Y%m%d%H%M%S"
With this I get only up to the seconds. I know if I add %l to the end I get a precision of 2 milliseconds, but I am one short. Is there any way to describe how precise I can choose the milliseconds. Thanks
Using the .tostring() method of the datetime object:
(get-date).ToString('yymmddhhmmssfff')
171513121549340
I use this for some of my work (think, naming files): Get-Date -Format 'DyyyyMMddThhmmsstt.fffffff'. The capital D is for Date and the capital T for time. Perhaps this is helpful!
D20171013T101807AM.8629943
I am currently converting a date time value to unix time so that it can be inserted into a time series database (influxdb) using the following code:
(Get-Date -Date $_.timecreated -UFormat %s)
Unfortunately influx requires nano second resolution while the above gives me ms resolution. What is the best way to add nano second resolution that influx can accept as a valid unix timestamp? I have tries adding some 0000 characters at the end but that does not always work.
You will have to compute the unix timestamp yourself like this, by computing the offset from the unix epoch:
$utime = ((Get-Date -Date $_.timecreated) - (Get-Date "1/1/1970")).TotalSeconds
that gives you a double that you can format as you like. This will give nanosecond precision:
"{0:F06}" -f $utime
Update: It's important to note that I don't think Get-Date will give you a nanosecond precision of the time. On my machine the nanosecond place value is always 0.
I need to format the previous date to yyyy-mm-dd.
For example, today is May 25,2016. Therefore I need the output '2016-05-24'.
$a = (Get-Date).AddDays(-1).ToString('yyyy-mm-dd')
Write-Output $a
When I run the code I get 2016-44-24 which is incorrect.
How can I do it?
mm specifies The minute, from 00 through 59
Source.
You have to use uppercase for month instead:
(Get-Date).AddDays(-1).ToString('yyyy-MM-dd')