Good morning everyone and please excuse the interruption.

I found this particular script online that when executed can tell me the uptime of a computer (from the looks of it, it only works on the computer it is run on)

Is there a way to modify the script so it can do the following:

1. prompt me to enter a computer name
2. display the uptime of said computer entered

This script says I would need to insert a line with all the computer names i want it to look for, which to me, is too much info.

#############################################################################
# Get-Uptime.ps1
# This script will report uptime of given computer since last reboot.
# 
# Pre-Requisites: Requires PowerShell 2.0 and WMI access to target computers (admin access).
#
# Usage syntax:
# For local computer where script is being run: .\Get-Uptime.ps1.
# For list of remote computers: .\Get-Uptime.ps1 -ComputerList "c:\temp\computerlist.txt"
#
# Usage Examples:
#
# .\Get-Uptime.ps1 -Computer ComputerName
# .\Get-Uptime.ps1 -ComputerList "c:\temp\computerlist.txt" | Export-Csv uptime-report.csv -NoTypeInformation
#
# Last Modified: 3/20/2012
#
# Created by 
# Bhargav Shukla
# http://blogs.technet.com/bshukla
# http://www.bhargavs.com
# 
# DISCLAIMER
# ==========
# THIS CODE IS MADE AVAILABLE AS IS, WITHOUT WARRANTY OF ANY KIND. THE ENTIRE 
# RISK OF THE USE OR THE RESULTS FROM THE USE OF THIS CODE REMAINS WITH THE USER.
#############################################################################
#Requires -Version 2.0

param 
(
	[Parameter(Position=0,ValuefromPipeline=$true)][string][alias("cn")]$computer,
	[Parameter(Position=1,ValuefromPipeline=$false)][string]$computerlist
)

If (-not ($computer -or $computerlist))
{
	$computers = $Env:COMPUTERNAME
}

If ($computer)
{
	$computers = $computer
}

If ($computerlist)
{
	$computers = Get-Content $computerlist
}

foreach ($computer in $computers) 
{
	$Computerobj = "" | select ComputerName, Uptime, LastReboot
	$wmi = Get-WmiObject -ComputerName $computer -Query "SELECT LastBootUpTime FROM Win32_OperatingSystem"
	$now = Get-Date
	$boottime = $wmi.ConvertToDateTime($wmi.LastBootUpTime)
	$uptime = $now - $boottime
	$d =$uptime.days
	$h =$uptime.hours
	$m =$uptime.Minutes
	$s = $uptime.Seconds
	$Computerobj.ComputerName = $computer
	$Computerobj.Uptime = "$d Days $h Hours $m Min $s Sec"
	$Computerobj.LastReboot = $boottime
	$Computerobj	
}

You can use Invoke-Command and pass the script as a script block to it. This will let you run it across multiple computers using PS Session

https://technet.microsoft.com/en-us/library/hh849719.aspx

• Proposed as answer by Aditi Satam 16 hours 13 minutes ago

Thank you for your response

I am still learning this so perhaps you can show me an example how to do that?

Is there a way to modify the script so it can do the following:

1. prompt me to enter a computer name
2. display the uptime of said computer entered

1 - use Read-Host to prompt for input.

2 - use a calculated property:

https://technet.microsoft.com/en-us/library/ff730948.aspx

You can use Invoke-Command and pass the script as a script block to it. This will let you run it across multiple computers using PS Session

Completely unnecessary. Script is already querying remote machines via WMI.

For the Read-Host, do I place that before or after the parameters?

and for the calcuated properties, wouldnt that require a local txt file to read from to get that info?

For the Read-Host, do I place that before or after the parameters?

After, but before the if tests.

and for the calcuated properties, wouldnt that require a local txt file to read from to get that info?

No, it doesn't. Just use the current $computer variable as the expression.

i think i understand so instead of the parameter where its reading from a computer list i should remove that and use the calculated properties as a param?

The get-childitem command doesnt show me anything other than how to list a directory structure or read from a file on a specific location so i am stumped here

• Edited by Storo1975 15 hours 34 minutes ago

i think i understand so instead of the parameter where its reading from a computer list i should remove that and use the calculated properties as a param?

No, the calculated property is only for output. Here's a quick example:

$computerList = Read-Host 'Enter computer name'

foreach ($computer in $computerList) {

    Get-WmiObject Win32_OperatingSystem -ComputerName $computer |
        Select @{N='ComputerName';E={$computer}},
               @{N='LastBootupTime';E={[System.Management.ManagementDateTimeConverter]::ToDateTime($_.LastBootUpTime)}},
               @{N='Uptime';E={(Get-Date) - ([System.Management.ManagementDateTimeConverter]::ToDateTime($_.LastBootUpTime))}}
}

ahh that makes much more sense now. I will play around with it.

Thank you

Cheers, you're very welcome.

You can use Invoke-Command and pass the script as a script block to it. This will let you run it across multiple computers using PS Session

https://technet.microsoft.com/en-us/library/hh849719.aspx

• Proposed as answer by Aditi Satam Wednesday, April 22, 2015 2:55 PM

i think i understand so instead of the parameter where its reading from a computer list i should remove that and use the calculated properties as a param?

The get-childitem command doesnt show me anything other than how to list a directory structure or read from a file on a specific location so i am stumped here

• Edited by Storo1975 Wednesday, April 22, 2015 3:34 PM