There are many ways to obtain the system uptime from Windows GUI.
Just to list a couple:
- Task Manager, Performance, Up Time.
- From the command prompt using the command prompt systeminfo ( system boot time).
But why don’t use Powershell or BaSH?
POWERSHELL
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PS C:\Users\system.team> Get-CimInstance -ClassName win32_operatingsystem | Select-Object -exp LastBootUpTime 7/07/2017 12:07:06 PM |
If you are using PowerShell version later than 5.1
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#Requires -Version 5.1 Get-ComputerInfo | select-object oslastbootuptime |
BASH
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[boss@scriptingbox ~]# uptime [boss@scriptingbox ~]# uptime 19:02:15 up 10:47, 2 users, load average: 0.16, 0.03, 0.01 |
The result looks similar, but what if we want to get from PowerShell just the uptime instead the last boot up time?
The New-TimeSpan cmdlet will help us to achieve what we really want:
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PS C:\Users\system.team> $boot = (Get-CimInstance -ClassName win32_operatingsystem | Select-Object LastBootUpTime ).lastbootuptime PS C:\Users\system.team> $now = Get-Date PS C:\Users\system.team> New-TimeSpan -start $boot -end $now Days : 5 Hours : 3 Minutes : 11 Seconds : 33 Milliseconds : 572 Ticks : 4434935728379 TotalDays : 5.13302746340162 TotalHours : 123.192659121639 TotalMinutes : 7391.55954729833 TotalSeconds : 443493.5728379 TotalMilliseconds : 443493572.8379 |
Or in a one-liner
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New-TimeSpan -start $((Get-CimInstance -ClassName win32_operatingsystem ).lastbootuptime) -end $(Get-Date) |
I think that you meant to omit line 1. Line 2 $now should be $today. You can do, uptime, with a one liner, in PowerShell, as well without the variables. New-TimeSpan -Start (Get-CimInstance -ClassName win32_operatingsystem).LastBootUpTime -End (Get-Date)
Hi Micheal,
Thanks for your comment and for adding another way to get with a oneliner the uptime and for finding an error.
Regards