JES The mighty system

An M-V-S sub-system
JES-2 could not fail
It printed jobs and punched my cards
And e-ven did NET-mail

My users were unhappy
M-V-S was hard to learn
They wanted something eas-i-er
A place where they could turn

So when my boss assigned me
To find a better way
I started searching for soft-ware
That might make their day

I thought we would try U-NIX
But that was even worse
While I-B-M has P-L-S
'C' is far too terse

My time was running out
And I was not inspired
I knew it would be two more weeks
Before I would be fired

JES the mighty system
Ran my C-P-U
It did my work without a quirk
And never was I blue

An M-V-S subsystem
JES-2 could not fail
It printed jobs and punch my cards
And e-ven did NET-mail

I was getting worried
And so I came to SHARE
I asked around and what I found
Was a big teddy BEAR

Software that was simple
Eas-y to understand
With V-M in the world today
All others would be canned

My users were now happy
Content and worry free
V-M and friendly C-M-S
Sure saved the day for me

The only thing I'll miss
That M-V-S pro-vides
Is all that great JES-2 source code
That I-B-M can't hide

JES the mighty system
Ran my C-P-U
It did my work with-out a quirk
And never was I blue

An M-V-S sub-system
JES-2 could not fail
It printed jobs and punched my cards
And e-ven did NET-mail

Some systems live forever
But not so M-V-S
'Cause T-S-O and S-M-P
Are too much of a mess

V-M is like heaven
It's software you can trust
But as I'm sure you're all aware
That source code is a must

My eyes looked t'ward tomorrow
As I scratched my C-D-S
I'd never have to worry now
Which SYS-MODS I'd regress

Without a super-visor
JES-2 could not be run
And so that code of Houston fame
Just rode into the sun

Jes the mighty system
Ran my C-P-U
It did my work with-out a quirk
And never was I blue

An M-V-S sub-system
JES-2 could not fail
It printed jobs and punched my cards
And e-ven did NET-mail