06-09-2014
Yes, that is what they are doing. This all came up when I was told that the longer we "soak" a set of patches in dev, the more likely it is that a different (and untested) set of patches will go into production . Once I picked my jaw up off the floor (which I have to do often around here) we decided to "ask" for a patching server to be configured so that we can start controlling what goes in and when. The most generous time you have all offered up on this thread is what I needed to substantiate our request; which I needed because they tried to make me believe that the "whole world" was doing it their way. My assumption was that this was an extremely inaccurate statement but then again, I don't know everything so I turned to those who knew much more about this area than I... you all.
Again I say thanks for sharing both your time and your knowledge.
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MEM(4) Linux Programmer's Manual MEM(4)
NAME
mem, kmem, port - system memory, kernel memory and system ports
DESCRIPTION
mem is a character device file that is an image of the main memory of the computer. It may be used, for example, to examine (and even
patch) the system.
Byte addresses in mem are interpreted as physical memory addresses. References to nonexistent locations cause errors to be returned.
Examining and patching is likely to lead to unexpected results when read-only or write-only bits are present.
It is typically created by:
mknod -m 660 /dev/mem c 1 1
chown root:kmem /dev/mem
The file kmem is the same as mem, except that the kernel virtual memory rather than physical memory is accessed.
It is typically created by:
mknod -m 640 /dev/kmem c 1 2
chown root:kmem /dev/kmem
port is similar to mem, but the I/O ports are accessed.
It is typically created by:
mknod -m 660 /dev/port c 1 4
chown root:mem /dev/port
FILES
/dev/mem
/dev/kmem
/dev/port
SEE ALSO
chown(1), mknod(1), ioperm(2)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 1992-11-21 MEM(4)