Linux Kernel勉強会 2017年9月分

1. Linux Kernel 2017 9
@satomicchy
Linux Kernel

2. kernel.org linux.org
“What is Linux”
Linux

3. kernel.org
The Linux Kernel Organization / The Linux Foundation
Linux Kernel
/ Git
Linux Kernel

4. linux.org
LINUX ONLINE INC.
Linux FreeBSD
Linux Man Pages

5. What is Linux?
by kernel.org
What is Linux?
Linux is a clone of the operating system Unix,
written from scratch by Linus Torvalds with
assistance from a loosely-knit team of hackers
across the Net. It aims towards POSIX and Single
UNIX Specification compliance.
It has all the features you would expect in a
modern fully-fledged Unix, including true
multitasking, virtual memory, shared libraries,
demand loading, shared copy-on-write
executables, proper memory management, and
multistack networking including IPv4 and IPv6.
Although originally developed first for 32-bit x86-
based PCs (386 or higher), today Linux also runs
on a multitude of other processor architectures,
in both 32- and 64-bit variants.
What is Linux?
Linux Unix
Linux Torvalds (the Net)
(loosely-knit)
POSIX Single UNIX Specification
Unix
copy-on-write
(proper) IPv4 IPv6
32bit x86
PC(386 )
Linux 32bit 64bit

6. What is Linux?
by linux.org
What is Linux?
Linux is an operating system that evolved
from a kernel created by Linus Torvalds
when he was a student at the University of
Helsinki. Generally, it is obvious to most
people what Linux is. However, both for
political and practical reasons, it needs to
be explained further. To say that Linux is an
operating system means that it's meant to
be used as an alternative to other operating
systems, Windows, Mac OS, MS-DOS, Solaris
and others. Linux is not a program like a
word processor and is not a set of programs
like an office suite. Linux is an interface
between computer/server hardware, and the
programs which run on it.
What is Linux?
Linux Linus Torvalds
kernel
Linux
Linux
Windows,MacOS,MS-
DOS,Soraris
Linux word
office suite
Linux

7. What is Linux?
by linux.org
The kernel
We should point out here that the focal point of
any operating system is its 'kernel'. Without
going into great detail, the kernel is what tells the
big chip that controls your computer to do what
you want the program that you're using to do. To
use a metaphor, if you go to your favorite Italian
restaurant and order 'Spaghetti alla Bolognese',
this dish is like your operating system. There are
a lot of things that go into making that dish like
pasta, tomato sauce, meatballs and cheese. Well,
the kernel is like the pasta. Without pasta, that
dish doesn't exist. You might as well find some
bread and make a sandwich. A plate of just pasta
is fairly unappetizing.
Without a kernel, an operating system doesn't
exist. Without programs, a kernel is useless.
What is Linux?
The kernel
’kernel’
kernel
git chip
'Spaghetti alla Bolognese’
kernel
kernel
kernel

8. POSIX
https://ja.wikipedia.org/wiki/POSIX
demand loading
https://ja.osdn.net/projects/linux-kernel-docs/wiki/
internal22-185-
copy-on-write
https://ja.wikipedia.org/wiki/

9. Linux
Linux
https://ja.osdn.net/projects/linux-kernel-docs/wiki/
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