Keep it Simple

// a software developer's blog by Karthikeyan Vijayakumar

Get System Uptime using Powershell

Computer uptime is an important statistic in systems management. Here are few ways to determine system uptime for a computer

function Get-SystemUptime
{
$operatingSystem = Get-WmiObject Win32_OperatingSystem
[Management.ManagementDateTimeConverter]::ToDateTime($operatingSystem.LastBootUpTime)
}

$wmi = Get-WmiObject -Class Win32_OperatingSystem
$wmi.ConvertToDateTime($wmi.LocalDateTime) – $wmi.ConvertToDateTime($wmi.LastBootUpTime)

SharePoint – App or Add-in

There have been a few threads on the different social networks around the rename of the “App Model” to “Add-in Model” for Office 365.

The reasons behind this change can be summarized as such:

  • Confusion across Microsoft’s product range as to the exact meaning of the word
  • Negativity from the Partner Network over the perceived meaning of the word

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Sharepoint – web scope vs tenant scope

Tenancy – A SharePoint tenancy is a set of site collections that are configured and administrated as a unit.

In SharePoint Online, when a new customer establishes an Office 365 account to host its SharePoint sites, the Office 365 environment creates a new tenancy. The customer’s business users that access the tenancy are known as tenants.

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SharePoint – App Principal

So what is an App Principal? This is probably best explained by way of a little story, and it goes something like this. Suppose I have a SkyDrive site. I keep all of my documents and pictures up there. When I want to access that content I have to enter my username and password. SkyDrive validates my credentials and then gives me access to that content.

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