October 2002
Intermediate to advanced
430 pages
14h 57m
English
Content preview from Embedded Systems Design, 2nd Edition
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Real-time operating systems 279
third set of permissions, known as others, are checked as the final
part of this process.
These permissions can be changed as required by the sys-
tem administrator, who must set up the Linux system and control
how much or how little access each user has to the system and its
facilities. This special user (or superuser) has unlimited access by
being able to assume any user and/or group identity. This allows
an organised structure to be easily implemented and controlled.
Linux software structure
The software structure used within UNIX is very modular,
despite its long development history. It consists of several layers
starting ...
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