Com 212 intro to system programming book Theory
assert, both are ANSI C standard and available on all operating systems that claim to support ANSI Cb PERROR
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com-212-introduction-to-system-programming-theory
9833 SS1 FISHERY LESSON NOTE
assert
, both are ANSI C standard and available on all operating systems that claim
to support ANSI Cb PERROR
When
a computer is turned on
, the program that gets executed first is called the ``
operating
system
.'' It controls pretty much all activity in the computer.
This includes who logs in
,
how disks are used
,
how memory is used
,
how the CPU is used
, and how you talk with other computers.
In the following discussions
, our study Operating System example will be "Unix. The way that programs talk to the operating system is via ``
system calls
.'' A system call looks like a procedure call (see below, but it's different --
it is a request
to the operating system to
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