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