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Top Forums UNIX for Beginners Questions & Answers Which UNIX OS is going to give me the most versatility? I Want Total Control Post 302974399 by hicksd8 on Monday 30th of May 2016 05:24:17 AM
Old 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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KSPLICE-UNDO(8) 						      Ksplice							   KSPLICE-UNDO(8)

NAME
ksplice-undo - Undo a Ksplice update that has been applied to the running kernel SYNOPSIS
ksplice-undo [OPTIONS] KSPLICE_ID DESCRIPTION
ksplice-undo takes as input a Ksplice identification tag, as reported by ksplice-view(8), and it reverses that update within the running binary kernel. OPTIONS
--debug Reverses the update with debugging output enabled. Recommended only for debugging. --debugfile=filename Sets the location where debugging output should be saved. Implies --debug. --raw-errors Print only raw error information designed to be machine-readable on standard error (standard output is still intended to be human- readable). If ksplice-undo fails due to an error from the Ksplice kernel modules, the first line on standard error will be a Ksplice abort code (see the Ksplice source code for documentation on these codes). Further lines will vary depending on the abort code. If ksplice-undo fails for any other reason, it will output the line "OTHER ", followed by a human-readable failure message, to standard error. SEE ALSO
ksplice-create(8), ksplice-apply(8), ksplice-view(8) BUGS
Please report bugs to <devel@ksplice.com>. AUTHORS
Jeff Arnold, Anders Kaseorg, and Tim Abbott COPYRIGHT
Copyright (C) 2007-2009 Ksplice, Inc. This is free software and documentation. You can redistribute and/or modify it under the terms of the GNU General Public License, version 2. Ksplice v0.9.9 2011-02-13 KSPLICE-UNDO(8)
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