The operating-system tag has no wiki summary.
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1answer
49 views
How does computer hardware ensure that user programs cannot overwrite memory used by the operating system? [closed]
I just took an online quiz for my Operating Systems class. I got this question wrong, can you please give the right answer and why? I answered A. Also, if this needs to be migrated to a different SE ...
6
votes
1answer
52 views
Linux: how many disk I/O does it take to read a file? How to minimize it?
According to this paper on Facebook's Haystack:
"Because of how the NAS appliances manage directory metadata, placing
thousands of files in a directory was extremely inefficient as the
...
0
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3answers
94 views
Installed over 4G RAM on 32-bit OS? [closed]
Possible Duplicate:
32-bit Windows Server address > 4GB RAM - How?
I know that for 32-bit OS, the addressable memory space for each process is "4G" (maybe just 3G in user space...).
If I ...
0
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0answers
31 views
mkisofs - Floppy Image to Disk Image
I'm trying to compile MikeOS on windows. I've successfully (I think) created a floppy (.flp) image of the operating system. I want to convert it to a disk image (.iso) so I can run it in virtual box. ...
0
votes
1answer
61 views
What's the difference between hardware and software interrupt? [closed]
I'm gonna sketch my understanding of both. I've googled around but i'm not sure about my knowledge. Please correct me!
Hardware interrupt is generated by the operation system event scheduler to ...
0
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0answers
52 views
HAProxy on Amazon Linux AMI
I am running HAProxy on a Amazon Linux AMI to load balance the RDS read replicas. What parameters should I tune on the large instance/server to ensure HAProxy performs at its best ?
thanks
0
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2answers
43 views
Why it's not possible to compile on a different OS than end-user OS [closed]
I was trying to compile a php extension on windows and ran into some trouble. I then thought it was possible to do the compilation for Windows on Linux, but turned out that wasn't possible.
Can ...
2
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3answers
63 views
find page size and number of pages of a process in linux
Given a PID of the process running in Linux (latest kernel), how do I find out:
The number of pages it is using
The size of each page it is using (4K, 2MB or 1GB)
This is for x86-64 architecture
-2
votes
2answers
206 views
How browsers handle multiple IPs
Can someone direct me to information on exact browsers behavior when browser gets multiple A records for a given hostname (say ip1 and ip2), and one of them is not accessible.
I interested in EXACT ...
0
votes
1answer
85 views
How to skip ExpressGate loading
I have to install a windows on a laptop which has preinstalled Asus Express Gate on it. The problem is that I am not able to enter the boot settings, so the system would be installed form a flash ...
0
votes
1answer
124 views
Best server operating system for number crunching [closed]
I am purchasing a new server for number crunching. It will have dual E7-4870 chips, 128GB RAM and a RAID 5 of SAS Hard Disks. It will be doing a lot of CPU intensive number crunching. I have set up ...
3
votes
1answer
199 views
What are the semaphore arrays on Linux?
I understand semaphores, but what are these semaphore arrays being used on my Linux box?
$ ipcs
------ Shared Memory Segments --------
key shmid owner perms bytes nattch ...
2
votes
2answers
76 views
Reset/reuse linux device letters?
Is there a way to tell the OS that /dev/sdd is really gone when I disconnect it and that it can reuse that letter?
I have RAIDs hooked up through fibre channel. I have it set up so that fstab will ...
2
votes
2answers
95 views
OS reinstall on a machine with Whole Disk Encryption
I have a machine that has McAfee SafeBoot Whole Disk Encryption on it. If I don't have the safeboot password, can I boot from a OS installation disk, format the disk and reinstall the OS? Will that ...
-2
votes
4answers
49 views
It is possible to run a virtualized OS on a datacenter facility? [closed]
I want to know if it is possible to run a virtualized OS over a datacenter service.
(i.e. to have a Windows Server at Amazon EC2 and two linux instances running on an installed virtualization engine ...
-1
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4answers
89 views
How to check if a normal user has super user privileges
I want to check if a normal user has super user privileges(means root privileges). My OS is RHEL 6 and i checked /etc/passwd configuration file, but no use. Please tell me any method to find the ...
0
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0answers
65 views
Apache 2 Virtual Hosts no working on OSX 10.6
This is my first MacBook and I'm trying to get virtual hosts up and running so as it's going to be my dev machine.
I've got apache/php/mysql running fine, the problem is that what ever address I go ...
0
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0answers
24 views
Anything similar to logrotate in NX OS?
I need to automate some administratative tasks of maintaining log files. I need to impose some size limitations & naming conventions.
1
vote
2answers
123 views
Would NetBSD be a good choice for a web server?
I've the choice of crafting a NetBSD image for a Xen VPS host, and was just wanting to play around as I like BSD and wished to use it for my general web hosting. I will be hosting a low-mid traffic ...
5
votes
3answers
346 views
Campus VLAN Segmentation - By OS?
We've been thinking through re-arranging our network and VLAN configuration. Here's the situation.
We already have our servers, VoIP phones, and printers on their own VLANs, but our problem lies with ...
1
vote
1answer
39 views
System File Checker vs Service Pack Reinstall
When trying to repair slow workstations, I've found that running sfc /scannow helps quite a lot in a few of my environments running really old computers. I've also seen recommendations of reinstalling ...
3
votes
1answer
92 views
Remote SCCM deployment of Operating Systems
I am currently using sccm 2007 for our software deployment and PXE. During this summer I have been tasked with upgrading 2000+ machines from Windows XP to Windows 7. My plan is to use sccm to ...
0
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0answers
102 views
OS X Server iCal “Getting events from server…”
I'm getting a strange error with my OS X 10.6 Server. I've setup group Wikis to use the calander feature for staff calanders. But when I visit the URL, https://myserver.net/groups/staff/calendar/ I ...
1
vote
2answers
40 views
Build parallel processing grid from 32-bit desktops
I am running simulation on my laptop(Core 2 Duo 1.8Ghz with 4GB RAM running windows 7) which is taking very long time.
I have a couple of unused 32-bit (Core 2 Duo 1.8Ghz with 4GB RAM) desktops.
I ...
6
votes
3answers
223 views
How to cause file system corruption for test purposes?
AFAIK the reasons for file system corruption are as follows:
improper shutdown (hard reset);
hardware failures (bad block on disk, bad disk controller);
improper startup (mounting damaged file ...
2
votes
3answers
58 views
Hypervisor for mixed client and server OSes
I need to replace three old boxes I use for development, running Linux, Win Server and Win XP. Instead of purchasing three new boxes I am thinking of purchasing a single box and virtualizing the OSes. ...
0
votes
2answers
100 views
What is the best method to add a new hard drive in RHEL 5.4?
What is the best method to add a new hard drive in RHEL 5.4 linux machine?
Please go through the following details of linux machine and help me to add one 250 gb hard disk to increase available disk ...
1
vote
1answer
79 views
Why doesn't openSUSE Linux upgrade itself through its software repositories?
openSUSE - fast becoming my favourite Linux distro on the client - doesn't seem to upgrade itself through its own configured software repositories.
Do we know why this is the case? Is it a ...
1
vote
0answers
144 views
Hidden OS dual boot with or without Trueycrypt
As I understand Hidden OS feature in Truecrypt makes your hidden OS interact with all external storages (USB...) read-only. Which is something that will definitely not work for me.
I would like to ...
3
votes
1answer
101 views
Get-ADComputer OperatingSystem property is missing
Although all the online documentation and examples state there should be an OperatingSystem property for the results of Get-ADComputer I don't have one on my Win Server 2008 R2.
Here is all I have on ...
0
votes
2answers
148 views
Which distro support ReiserFS out of the box?
I need an OS distro (Linux, BSD ,or any other open source) which out of the box give option to use ReiserFS for the file system
3
votes
2answers
164 views
OpenSolaris fork?
I have a plan to use OpenSolaris in this year, but now, the development has been discontinued.
Is there any fork of OpenSolaris?
0
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1answer
176 views
How can I use Hping for OS detection?
I want use Hping for detecting Host operating system but I can't find how can I do this?
I can do the same job with Nmap like this:
nmap -O Host_IP/Name
3
votes
2answers
57 views
Access rights issue in MAC
I have a Mac machine running Mac OS Version 10.6.6.
I have added my mac machine to a domain controller (which runs Windows version of server) and allow users from domain controller to login.
Because ...
2
votes
1answer
105 views
How many system calls are there in Linux? [closed]
Linux started out with much less system calls then it has now.
Let say in 2.6.32, how many are there?
0
votes
1answer
59 views
Change Slicehost operating system without losing data
I want to change the operating system on a Slicehost VPS. I'd like to do this in the least painful way possible, so I'm trying to figure out a way to do it without building a new slice from scratch ...
3
votes
3answers
227 views
Reasons Why In Place Upgrades Are Bad
I am working on compiling a list of reasons why in place upgrades of software and operating systems are a bad idea. There are many people that I work with that think that it is easier and better to ...
0
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4answers
150 views
which Operating system should we use for server [closed]
In a client/server system,which OS should be used on the server side
which is the best OS in the market that is most commonly used now days for the server?
3
votes
2answers
358 views
Ubuntu server vs Enterprise Redhat - questions
I promise I don't mean to cause a war here, but I want to ask why so many people recommend using "enterprise" Linux (specifically Redhat) over something like Ubuntu Lucid. Is this purely for ...
0
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1answer
138 views
0
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1answer
383 views
How does Amazon EC2 operating system licensing work?
I'm new to the cloud and EC2 and am wondering how licensing of operating systems works. Specifically, i spent some time looking at amazon machine images (ami's) and some contain windows and sql ...
0
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2answers
336 views
recommendations for a lightweight linux distribution for a test server
I'm planning on setting up a test server to experiment with some application servers (tomcat/jboss/...) and with some portals.
Now the machine I've set aside for this is lightweight CPU/GPU wise(Atom ...
-1
votes
1answer
56 views
low level step: what unix/linux do when a process call fork() [closed]
this is a question my teacher is asking and no one know what to reply.
Someone can tell me which are the low level step unix makes to make a fork(); (with system call) and returns?
thanks
1
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4answers
328 views
Best Linux OS for 64GB ram server
What is the best Linux OS (server) that can make full utilization of a 64GB ram server machine.?
0
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0answers
265 views
Demand paging vs Pure Demand Paging
What is the basic difference between Demand Paging and Pure Demand Paging?
As per my understanding in Demand paging a page from the hard disk is only brought into the physical memory when it is ...
4
votes
4answers
773 views
Windows System Admin, Things to know?
So In my journey to hopefully become a DBA I figure the first step is probably to start as a Windows System Administrator. Since Junior DBA positions aren't widely available.
What I have: B.S. in ...
0
votes
2answers
33 views
Changing account password while a process is running under its identity
Does changing the account password on a Windows XP machine affect processes running under that account identity? Are there any issues I need to take into account when doing that? How about Windows 7?
3
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4answers
329 views
Does wake-on LAN/WOL depend on hardware or the operating system?
Does wake-on LAN/WOL depend on hardware or the operating system? Or both? How does one send a command to wake up a machine if it is supported (say a Fedora server)?
0
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1answer
171 views
What software can create OS image backups for platform independent servers
I have a couple servers for which I use the inbuilt backup tools to make OS backups, is there software that can automate the process and make similar format backups. Are there any freeware tools ...
0
votes
1answer
16 views
Windows Server license [closed]
Possible Duplicate:
Can you help me with my software licensing question?
I keep getting this message on start-up about the license not being genuine. I know it is genuine because I bought ...
