you can use one of the dot net languages with SMO to script the jobs. This is a snippet from something I did in VB.Net. Please keep in mind that I am not very good with VB. Of course you will need to create all your variable, objects, streamwriter, etc.
There are quite a lot of examples on the net. It's the only way I could do it since I'm not a dot net person.
wf.WriteLine()
wf.WriteLine("-- **** Create Jobs")
wf.WriteLine()
Dim jb As Agent.Job
For Each jb In svr.JobServer.Jobs
smoObjects = New Urn(0) {}
smoObjects(0) = jb.Urn
scrp.Options.IncludeIfNotExists = True
Dim sc As StringCollection
sc = scrp.Script(smoObjects)
Dim st As String
For Each st In sc
wf.WriteLine(st)
wf.Flush()
Next
Next
MG
"There are two ways of constructing a software design. One way is to make it so simple that there are obviously no deficiencies. And the other way is to make it so complicated that there are no obvious deficiencies."
Tony Hoare
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." Red Adair.