Convert Unix time with PowerShell

问题

I am parsing an SQLite database using the PowerShell SQLite module, and a couple of the return values are created and modified, both of which are in Unix time.

What I would like to do is somehow convert that into \"human time\". I have removed some of the other SQL queries for ease of reading.

Import-Module SQLite
mount-sqlite -name GoogleDrive -dataSource E:\\Programming\\new.db
$cloud_entry = Get-ChildItem GoogleDrive:\\cloud_entry

foreach ($entry in $cloud_entry)
{
    $entry.created
}

The output looks like a large column of Unix timestamps:

1337329458

Update: I ultimately went with the following:

$ctime = $entry.created
[datetime]$origin = \'1970-01-01 00:00:00\'
$origin.AddSeconds($ctime)

回答1:

See Convert a Unix timestamp to a .NET DateTime.

You can easily reproduce this in PowerShell.

$origin = New-Object -Type DateTime -ArgumentList 1970, 1, 1, 0, 0, 0, 0
$whatIWant = $origin.AddSeconds($unixTime)

回答2:

Function Convert-FromUnixDate ($UnixDate) {
   [timezone]::CurrentTimeZone.ToLocalTime(([datetime]'1/1/1970').AddSeconds($UnixDate))
}

$niceTime = Convert-FromUnixDate $ctime

PS C:\> $niceTime

Friday, 18 May 2012 8:24:18 p.m.

回答3:

$date = get-date "1/1/1970"
$date.AddSeconds($unixTime).ToLocalTime()

回答4:

A simple one-liner:

(Get-Date "1970-01-01 00:00:00.000Z") + ([TimeSpan]::FromSeconds($unixTime))

回答5:

Use:

(([System.DateTimeOffset]::FromUnixTimeSeconds($unixTime)).DateTime).ToString("s")

FromUnixTimeMilliseconds is also available.

ToString("s"): Sortable: "The pattern reflects a defined standard (ISO 8601)"

Ref.: Standard Date and Time Format Strings, The Sortable ("s") Format Specifier

回答6:

$ctime = $entry.created
[datetime]$origin = '1970-01-01 00:00:00'
$origin.AddSeconds($ctime)

来源：https://stackoverflow.com/questions/10781697/convert-unix-time-with-powershell