Wait for a script to finish - powershell

Question

I am using a script which backups the folders and than in the next block tries to delete those folder from there original location.This is the script
if ($confirmation -eq 'y') {
# 3. BACKUP script
./bakup_mysite.ps1
# 4. DELETE CONTENTS OF my_site
get-childitem "C:\inetpub\wwwroot\my_site\" -recurse | % {
remove-item $_.FullName -recurse -force
}
}
If I put a Read-Host after step 3 it does stop and ask the user to press any key and then it deletes the next block. But I want to put a wait so the user doesn't have to press any key and everything happens automatically.
This is the backup code which gets called from my_site.ps1
$Service_folder_name = 'C:\Services\'
$Pics_folder_name = 'C:\Pics\'
$Date = Get-Date
$folder_date = $Date.ToString("yyyy-MM-dd_HHmm")
$backup_folder_name = 'c:\_Backups\my_site\' + $folder_date
if (!(Test-Path -path $backup_folder_name)) {
New-Item $backup_folder_name -type directory
}
if ((Test-Path -path $Pics_folder_name)) {
gi $pics_folder_name | .\Library\out-zip.ps1 $backup_folder_name\pics.zip $_
}
if ((Test-Path -path $Service_folder_name)) {
gi $Service_folder_name | .\Library\out-zip.ps1 $backup_folder_name\Services.zip $_
}

Answer 1

For Powershell cmdlets or functions, PowerShell waits before starting the next command. If it is not the case for your backup script, the trick is to pipeline to Out-Null :
./bakup_mysite.ps1 | Out-Null
PowerShell will wait until your script has exited before continuing.
Another option is to use a background job:
$BackupJob = Start-Job -FilePath "\Path\To\bakup_mysite.ps1"
Wait-Job $BackupJob
Powershell will wait until the job $BackupJob has completed before moving on to the next commands.