05-30-2016
The operating system is a large set of programs that runs (supervises) the system and runs other system and user programs. The operating system comprises not only the memory resident kernel but also a multitude of run-time libraries, internal commands and external commands (the kind you see in /bin for example) which all need to be compatible and interact with each other. All these are written in human readable code (in C, C++, Assembler, et al) and can comprise several hundred thousand lines of code. Over several hours compilers convert all this human readable code into machine language creating a kernel that can be booted to control all the hardware. The compiled code can then be formatted into DVD media for installation purposes.
That's why the code is so large and compiling it takes a long time.
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LEARN ABOUT CENTOS
osinfo-detect
OSINFO-DETECT.C(1) Virtualization Support OSINFO-DETECT.C(1)
NAME
osinfo-detect - Detect the operating system on installable media or trees
SYNOPSIS
osinfo-detect [OPTIONS...] PATH|URI
DESCRIPTION
Examine the "PATH" or "URI" to determine what (if any) operating system it is for, and whether it is installable or is a Live image. By
default "PATH" or "URI" will be interpreted as pointing to ISO media. To request examination of an install tree instead, the option
"--type=tree" should be given.
The output information is formatted for humans; to obtain machine readable output, the option "--format=env" should be given to produce
shell-like key/value pairs.
OPTIONS
--format=plain|env
Switch between human readable output (plain, the default) or machine readable output (env).
--type=media|tree
Switch between looking for CD/DVD ISO media (media, the default) or install trees (tree)
EXIT STATUS
The exit status will be 0 if an operating system was detected, or 1 if none was found.
AUTHORS
Zeeshan Ali (Khattak) <zeeshanak@gnome.org>, Daniel P. Berrange <berrange@redhat.com>
COPYRIGHT
Copyright (C) 2011-2012 Red Hat, Inc.
LICENSE
"osinfo-detect" is distributed under the termsof the GNU LGPL v2 license. This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE
libosinfo-0.2.7 2013-04-10 OSINFO-DETECT.C(1)