02-07-2020
Hello rabrant,
Sorry for the delayed response but I've been trying to think about this to find a good reason to do it. I would always recommend against it. It's not something I have done, and it's nothing something I would every suggest. Do you have a specific need for using a specific memory address? The OS will stop you if your process does not 'own' the location. Trying to write to /dev/mem would be extremely dangerous even if it was permitted.
Each process is allocated memory by the OS as it is required and the start location & length vary each time a process is called. If your process is swapped, then when recalled it will be extremely unlikely to be in the same physical location. Are you trying to refer to a memory location of your process or perhaps adjust some element of the hardware perhaps?
It's the sort of thing that I would say "No" many times and if you insist, I would have a very long think of any possible reason you might want to and then say "No" again. Can yoiu enlighten us to your need? There is almost certainly a better way.
Kind regards,
Robin
This User Gave Thanks to rbatte1 For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
It is just a general question....is there a limit on the memory? I am looking into a process to store image files on the unix server which will be accessed by the application, and I just wonder if there is any limit regarding the physical or virtual memory. I am very new to unix, so thanks for... (1 Reply)
Discussion started by: cchien
1 Replies
2. AIX
Hi all
I need command to give logical and physical IP Address for my machine.
thank you (1 Reply)
Discussion started by: magasem
1 Replies
3. Solaris
what is the command to find the physical memory in soalris OS and how to find whether paging is happening or not ? (2 Replies)
Discussion started by: jayaramanit
2 Replies
4. Solaris
Hi,
Im working on Solaris 9 on SPARC-32 bit running on an Ultra-80, and I have to find out the following:-
1. Total Physical Memory in the system(total RAM).
2. Available Physical Memory(i.e. RAM Usage)
3. Total (Logical) Memory in the system
4. Available (Logical) Memory.
I know... (4 Replies)
Discussion started by: 0ktalmagik
4 Replies
5. Solaris
Hi,
I need help to add new route:
10.252.0.138, GW 10.252.0.129 to e1000g1
and
10.252.0.10, GW 10.252.0.1 to e1000g2
tnx (4 Replies)
Discussion started by: mehrdad68
4 Replies
6. AIX
Hello
How do I deternine the physical location of an ethernet port, based on the hardware address?
I have 4 ports on a 9133-55A
ent0 05-08
ent1 05-09
ent2 07-08
ent3 07-09
Two of these are internal, and two are on a card. I need to single out ent0 and ent2, but I cannot find any... (4 Replies)
Discussion started by: mhenryj
4 Replies
7. Programming
I need some help to write a C++ code that read and write the register of a sequencer. I have to make a code that relate the objects with the physical address but I am a bit confuse. Could someone suggest me how to proceed? in which parts do I split the code?
thanks (1 Reply)
Discussion started by: silviafisica
1 Replies
8. Solaris
Is it possible to restrict physical memory in solaris zone with zone.max-locked-memory just like we can do with rcapd ? I do not want to used rcapd (1 Reply)
Discussion started by: fugitive
1 Replies
9. UNIX for Dummies Questions & Answers
Hi guys,
I got one problem which I definetily no idea.
What would the physical address be for virtual address?
1) 2ABC
2) 3F4B
Here is the page table:see attached
Thank you sos sososososso much!! (0 Replies)
Discussion started by: lemon_06
0 Replies
10. Shell Programming and Scripting
we have 4000 html pages that need an email address changed.
eg) company@yahoo.com to company@hotmail.com
we only want the file modified date to be changed when there has been a change to the file.
Should I be using grep?
I fairly new to UNIX and was told to using something like... (2 Replies)
Discussion started by: mchelle_99
2 Replies
LIBBASH(7) libbash Manual LIBBASH(7)
NAME
libbash -- A bash shared libraries package.
DESCRIPTION
libbash is a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may
want to load and use in scripts of your own.
It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries.
Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1). A bash shared library that can be loaded
using
ldbash(1) must answer 4 requirments:
1. It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash).
2. It must contain a line that begins with '#EXPORT='. That line will contain (after the '=') a list of functions that the library
exports. I.e. all the function that will be usable after loading that library will be listed in that line.
3. It must contain a line that begins with '#REQUIRE='. That line will contain (after the '=') a list of bash libraries that are
required for our library. I.e. every bash library that is in use in our bash library must be listed there.
4. The library must be listed (For more information, see ldbashconfig(8)).
Basic guidelines for writing library of your own:
1. Be aware, that your library will be actually sourced. So, basically, it should contain (i.e define) only functions.
2. Try to declare all variables intended for internal use as local.
3. Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with:
__<library_name>_
For example, internal function myfoosort of hashstash library should be named as
__hashstash_myfoosort
This helps to avoid conflicts in global name space when using libraries that come from different vendors.
4. See html manual for full version of this guide.
AUTHORS
Hai Zaar <haizaar@haizaar.com>
Gil Ran <ril@ran4.net>
SEE ALSO
ldbash(1), ldbashconfig(8), getopts(1), hashstash(1) colors(1) messages(1) urlcoding(1) locks(1)
Linux Epoch Linux