Script Drops on all SQL Agent Jobs - powershell

Question

I am new to powershell and I am trying to script out all SQL agent jobs. I have found a piece of code that does that thanks to ENRIQUE at SOLID QUALITY MENTORS.
My question is, how do I script a if exists, drop for every job?
Options.ScriptJobs does not seem to do what I think it should do?
param([string]$serverName,[string]$jobNameFile)
function script-SQLJobs([string]$server,[string]$jobNameFile)
{
[reflection.assembly]::LoadWithPartialName("Microsoft.SqlServer.Smo") | Out-Null
$srv = New-Object Microsoft.SqlServer.Management.Smo.Server("$server")
$db = New-Object Microsoft.SqlServer.Management.Smo.Database
$scrp = New-Object Microsoft.SqlServer.Management.Smo.Scripter($srv)
$scrp.Options.ScriptDrops = $TRUE
$scrp.Options.WithDependencies = $TRUE
$jobNameFile = "C:\SQLJOBS\Jobs.sql"
remove-item $jobNameFile
$jobs = $srv.JobServer.get_Jobs()
$jobs=$jobs | Where-Object {$_.Name -notlike "sys*"}
foreach($job in $jobs)
{
$script=$job.Script()
$script >> $jobNameFile
"GO" >> $jobNameFile
}
}
script-SQLJobs $serverName $jobNameFile
Many Thanks.

Answer 1

You could exclude scripts that do not match the words 'drop table'. For example:
$srv.JobServer.Jobs | Where-Object {$_.Name -notlike "sys*"} | Foreach-Object{
$script = $_.Script()
if($script -notmatch 'DROP TABLE')
{
$script+ "`nGO`n"
}
} | Out-File $jobNameFile
Another (cosmetic) option would be to check all job steps command:
$srv.JobServer.Jobs | Where-Object {$_.Name -notlike "sys*"} | Foreach-Object{
$cmd = $_.JobSteps | select -expand Command
if($cmd -match 'DROP TABLE')
{
$_.script()+ "`nGO`n"
}
} | Out-File $jobNameFile

Answer 2

You need to provide your script options object to the script method:
$script=$job.Script($scrp)

Answer 3

Here is a Powershell script copied from http://www.johnsansom.com/script-sql-server-agent-jobs-using-powershell/ which has been extended to do what you want.
# Date: 16/02/14
# Author: John Sansom
# Description: PS script to generate all SQL Server Agent jobs on the given instance.
# The script accepts an input file of server names.
# Version: 1.1
#
# Example Execution: .\Create_SQLAgentJobSripts.ps1 .\ServerNameList.txt
param([String]$ServerListPath)
#Load the input file into an Object array
$ServerNameList = get-content -path "Servers.txt"
#$ServerNameList = get-content -path $ServerListPath
#Load the SQL Server SMO Assemly
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.Smo") | Out-Null
#Create a new SqlConnection object
$objSQLConnection = New-Object System.Data.SqlClient.SqlConnection
#For each server in the array do the following..
foreach($ServerName in $ServerNameList)
{
Try
{
$objSQLConnection.ConnectionString = "Server=$ServerName;Integrated Security=SSPI;"
Write-Host "Trying to connect to SQL Server instance on $ServerName..." -NoNewline
$objSQLConnection.Open() | Out-Null
Write-Host "Success."
$objSQLConnection.Close()
}
Catch
{
Write-Host -BackgroundColor Red -ForegroundColor White "Fail"
$errText = $Error[0].ToString()
if ($errText.Contains("network-related"))
{Write-Host "Connection Error. Check server name, port, firewall."}
Write-Host $errText
continue
}
#IF the output folder does not exist then create it
$OutputFolder = ".\$ServerName"
$DoesFolderExist = Test-Path $OutputFolder
$null = if (!$DoesFolderExist){MKDIR "$OutputFolder"}
#Create a new SMO instance for this $ServerName
$srv = New-Object "Microsoft.SqlServer.Management.Smo.Server" $ServerName
#Script out each SQL Server Agent Job for the server
foreach($job in $srv.JobServer.Jobs)
{
Write-Host $job.Name
$script = ""
$script = $script + "-- Uninstall the job" + "`r`n"
$script = $script + "DECLARE #jobId binary(16)" + "`r`n"
$script = $script + "SELECT #jobId = job_id FROM msdb.dbo.sysjobs WHERE (name = N'$job')" + "`r`n"
$script = $script + "IF (#jobId IS NOT NULL)" + "`r`n"
$script = $script + "BEGIN" + "`r`n"
$script = $script + " EXEC msdb.dbo.sp_delete_job #job_id=#jobId, #delete_unused_schedule=1" + "`r`n"
$script = $script + "END" + "`r`n"
$script = $script + "GO`r`n"
$script = $script + "`r`n"
$script = $script + "-- Install the job" + "`r`n"
$script = $script + $job.Script()
$script = $script + "GO`r`n"
$fileName = $job.Name -replace '\\', ''
$script | out-file ".\$OutputFolder\$fileName.sql"
}
}
NOTE: You don't actually want to use the SMO created DROP command because it is dependent on the job id, which makes the resulting script non-reusable.