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What is a process?
In general, a Unix process is one execution of a
- Every process transforms one or more
streams into one or more
- For example, if you use a word processor to produce a document,
the word processor is converting your keystrokes into a
file (a stored representation of the
document). In this case the input stream is from the keyboard
and the output is to a file.
- When you print the file, you are
converting that file (as an input stream) into a printed
representation---the output stream goes to the printer.
- Whenever you type a Unix command, you are creating a
process to carry out the work of that command.
Next: Executing a process
See also: What is a Unix command?
Previous: What is a stream?
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Last updated: 1995/12/04 19:39:34 UT