I needed to backup some SQL Agent Jobs. I decided to save them to a file, but I wanted to schedule this (in the event they might change).

Below the PowerShell Script I used

[System.Reflection.Assembly]::LoadWithPartialName('Microsoft.SqlServer.Smo') | Out-Null
$serverInstance = "."

$server = New-Object ('Microsoft.SqlServer.Management.Smo.Server') $serverInstance

$jobs = $server.JobServer.Jobs | where-object {$_.category -eq "[your category]"}

if ($jobs -ne $null)
{

ForEach ( $job in $jobs )
{
$FileName = "d:\backup\SQLjobs\" + $job.Name + ".sql"
$job.Script() | Out-File -filepath $FileName
}
}