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 DEBIAN
ksplice-undo
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)