
Glossary
| example, any equipment at which a |
| communication path begins or ends such as |
| printers, data terminals, and computers. |
Dual | A device on which an integrated circuit or other |
| small components are mounted. It provides a |
| protective casing for the components and pin |
| connections for plugging the chip in a circuit |
| board. |
Dual
DUART
environment | 1. A set of strings, distinct from the arguments, |
| made available to a process when it executes |
| [1] a file; the environment is usually inherited |
| across exec(2) operations. |
| 2. A specific environment [2] maintained by the |
| shell. |
| 3. A nebulously identified way of doing things, |
| as in “interactive environment”: a deprecated |
| usage, not always expunged from these |
| manuals. |
error | Occurs when a hardware or software condition |
| prevents the successful execution of a system or a |
| user process. |
error message | A message sent from the system to the system |
| console when an error occurs. |