When you have Juniper EX4500 switch with JunOS 11.4R1.6 and has 96 interfaces in total. Due to some tests which might involve in repeated enabling and disabling interfaces in different configurations can some times end up in some havoc. If you want to make sure whether you forgot to enable them or left them in disabled state. So one of the way is to scroll through all the interfaces in the configuration one by one which is bit tedious and time taking process.
If you want to know or see all the disabled interfaces without looking through each of them individually here is a small tip.
From operational mode:
show interfaces | match “Administratively down”
Or you can view the configuration part:
> show configuration interfaces | match disable | display set