How do I make Powershell wait until a command is done before continuing?

Question

My script uninstalls a Windows Store app before installing the newer version. I need to make sure the uninstall is finished before installing, so how can I make sure I've waited long enough?

Remove-Appxpackage MyAppName  
# ~wait here~  
Add-Appxpackage .\PathToNewVersion

user2555451 · Accepted Answer · 2015-01-16 18:41:24Z

15

You can do this with the Start-Job and Wait-Job cmdlets:

Start-Job -Name Job1 -ScriptBlock { Remove-Appxpackage MyAppName }
Wait-Job -Name Job1
Add-Appxpackage .\PathToNewVersion

Start-Job will start a new job process that uninstalls the application. Wait-Job will then cause the script to wait until the task is completed before continuing.

answered Jan 16, 2015 at 18:41

user2555451

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