Operating Systems

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Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.

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Hello All,

I am new to python and coding overall. I am trying to make sense out of a particular line in the code below. This code will be used to see the files in my recycle bin. In  the second line, what are "curr, dirs, files"? are those fields, arguments of os.walk() function? I have noticed that if I change for instance "curr" for any other name, and change that parameter in the "path" line, the program still works. I am actually a little confused.

import os
rootrec = "C:\\$Recycle.Bin"
for curr, dirs, files in os.walk():
    for f in files:
        path = "%s/%s" % (curr,f)
        print(path)

Any clarification will be helpful!
0
Free Tool: ZipGrep
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Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Is it possible if yes how do I install a Mac OS on a virtual PC?
0
I am trying to clone this VM to another host and noticed it has 450GB allocated as "Thick Provisioned Lazy Zeroed"
On the OS level though I see only 188GB of this is actually used.
 I would like to reduce the disk size to say 300GB and then clone it but am not sure how to do this.
I think I need to use vMotion somehow but first wouldn't I need to make sure the data in the OS level is not located at the end of the disk?
0
Is there a utility that will allow me to expand the OS partition on my new Server 2016?   The power went out while configuring the server just 'out of the box' and I ended up with 50Gb partition for the OS.   I had wanted 150Gb.   When I 'shrank' the size of the DATA drive D, it automatically placed the unallocated space AFTER the D: drive.   From what I can tell, Server 2016 doesn't let you allocate the unallocated anywhere BEFORE that Drive.
0
My OS is win 10 pro 64 bit and I have an Office 365 business essentials account and i use Outlook owa for my email, and my email is msn,, the free version.
  when I am creating an email I have the habit of using the Tab key to tab for paragraphs, and this does not work.  Is there a work around where I can use the tab to indent for a new paragraph. thank
0
Back in the day (about to show my age here) when I was deep into using the Commodore Amiga and Workbench, I worked with a developer on the ability to create a RAM Drive. Not just a drive letter in Ram, an actual drive.

Essentially, the idea was to create the ability of making a pseudo hard drive in Volatile Ram space, that could be used as a regular hard drive.

Obviously, this had huge benefits in terms of program speed, as you could hack install an operating system into this disk and then install software into it (mostly games at the time) and then run that software at unheard of speeds. He actually got it working too! Sadly, he's now deceased so all his ideas and work were lost with him.

A recent question on Experts Exchange made me remember the project so I was wondering if anyone had heard of something like this for Windows?

NB: I know the RAM considerations, but I currently have a high end server sitting around here doing nothing, that also has 128GB of RAM installed in it. More than enough for an operating system and some programs.  And yes I know that all would be lost if the host operating system crashed :)

All that said.. anyone heard of something like this being developed for Windows?
0
Hi

Just studying for the MCSA 70-698 exam, and reading about dual booting etc.  I am reading that you can create a VHD and boot into different operating systems with that.

My question is why would you do that as opposed to doing a normal dual boot on a different partition.

Just trying to understand it better

Thanks
Matthew
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If so do I need a specific CPU?   If not this motherboard please suggest other full atx boards.  Specifically, need/want at least 6 PCIe slots.  The OS will be Ubuntu.

Thanks in advance EE!
0
I will buy a Windows 10 Home laptop with a 1 TB SSD, which I will begin with upgrading the OS to Windows 10 Pro.

But then I am unsure about how to partition the 1 TB SSD. I will use Hyper-V in the Pro version to run VMs (different Linux distributions I want to test, perhaps 10 of them). What would the best setup be for the partitions? On my current laptop (which has a 470 HDD), I have the programs installed on C: (195 GB) and data files on D: (270 GB). It has worked well. I have 45 GB free space on C:, and 67 GB free on D:

But now for this new computer I need a partition also for running VMs (if I should have a separate partition for that).

Besides running different Linux distributions  as VMs, I will also transfer my current laptop's contents to the new computer as a virtual machine by doing a clone of it.

Can I keep these different VMs on a flash drive like this (so I don't take up valuable space on the SSD)?:

SanDisk Ultra Fit 32 GB USB 3.0 Flash Drive

And then I use flash drives for the backup of the whole system also? But I need 1 clone (flash drive with VM) for each system, right? But how do I start each OS? Just insert the flash drive, or do I always have to start from the Windows 10 Pro, and switch to a VM from there?

What of what I have described above should be changed? And is it a good idea to only install Windows 10 Pro "permanently", and keep all the rest of the different OSs as VMs (what are the pros and cons between keeping an OS as …
0
Hi

I've a server with a few free space in the drive C: , i'm using a copy software for copy some files from another server and i think that this software create a bak files. When i run a tree size software i can see the recycle bin  with 80% taked but in the desktop my recycle bin icon is empty, so how i can empty my recycle bin ??

See the image

thanks
Reccycle-Bin.jpg
0
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Could I for example have this setup on a MacBook Pro with a 2 TB SSD drive?:

Mac OS X, Windows 10, the Chromebook OS, two Linux distributions, and Unix.

And then I can switch between each of these with the press of a button? Or, as I received an answer earlier regarding this, I instead need to log out and log into each of the OSs (there was some advantage with this)?

When it comes to making an image of the OSs for quick recovery when needed, should I have only 1 single backup image of the whole VM (including all OSs), or should I have separate backup images for each of the different OSs? I think the second alternative would be best, because it's always not optimal to use a backup image (the performance is not the same, somewhat less performance).

When it comes to being visible on the internet, would I be a more easy target using a MacBook Pro and the VM with different OSs?

What about wifi connection and noise from the fan for a MacBook Pro? Is the wifi working excellent to connect to any network, and is there no risk for a lot of noise from the fan when running software in different OSs or when accessing certain websites?
0
on windows
how can some files be deleted without ability to recover

not all files

want to keep os and applications and some files
0
batch script for windows os, to press ''ctrl+c'' automatically  before process being killed?
If someone restarts the remote PC,pressing the keys ctrl+c  before process being killed,this will save my work before pc shutting down
thank you
0
My OS is win 10 prof 64 bit, and I have a Office 365 Business Essentials account and use Word 2016.  

is there a document viewer for either Word documents or Office documents i.e. Excel, Access?
 I just want to view the first few lines of the document to see if it is the right document that I am seeking
0
Hello Experts,
A recetly purchases MAC had paerallels installed and a wind 10
all was good for a few days...
now the MAC is noticeably slower than its similars... this customer has the exact three macs
but even worst PARALLES with our app simply freezes few times a day...
The only way we were able to restore it is by restarting Parallels..

What can we do in this case ?

REgards
0
Hello, I am trying to manually put in the command to boot to the system disk on a MAC OS X system.  It's an iMac A1311.  When the system boots, it goes to the recovery options every time.  If you try to select a startup disk, there is none.

I have attempted First Aid, which comes back with error 8.  However, I have booted up in single user mode and ran fsck -y which came back okay.  I see the boot.efi file in /System/Library/CoreServices, but when I try to run a command such as

% sudo systemsetup -setstartupdisk /System/Library/CoreServices it comes back with fg: %: no such job

I am way more familiar with Command Prompt then Terminal, so maybe I'm missing something.  Suggestions?
0
Good day!
Well, not good for me...
Yesterday I installed 2 drives in a Dell Poweredge T320/Perc (H310 adapter) . Drives initialized, Virtual drives etc created, and both virtual drives online. I installed Openmanage and then the install insisted on rebooting the server. After an hour I decided to go on site to see what is happening to the server - "no boot device".

After digging, I tried tried the Bios boot menu. No Luck. Back To UEFi, Still no luck but apparently some more info:
"Windows Boot Manager" greyed out.
"Add a boot Option" - I can select the OS drive, but still no luck booting. I gives me an explorer view - where should I go in the explorer view?  

ANY ideas to get this server up and running? And searching o the internet it seems I am not the first one to get a kick in the arse following an OpenManage install...

Ben
0
I have search internet for solution to this but cannot find anything to repair Personalization in control panel.
Windows & Professional is OS, License is good, is Dell machine.
Personalize Window just flashes, no window opens.
0
My systems are on vsphere 6.5 and storage is Nimble SAN.  The vms being used have been upgraded to VM version 13.  Disk drives are recognized as thin provisioned by OS. (Windows Server 2012 R2 datacenter) and host supports VMFS3/EnableBlockDelete. (set to 1)

The disk according to windows has 2.6TB of data.
The VMDK according to vsphere is 10TB in size. (max configured)
the SAN says it only has 2.6TB in use on the volume. Volume was configured as 10TB.

During normal operations the disk will see the data double each night, then shrink back as SQL backups are dumped out and then the old ones deleted.  Windows is set to optimize all disks automatically every week.

Last weekend vsphere froze the VM complaining that the datastore did not have space on the storage volume.  The only way to release it was to increase the storage to 11TB.  I am still unable to reduce the size of the VMDK.  esxcli unmap commands do their thing fine, and the storage is happy, but the datastore still shows, and acts like it has a 10TB vmdk out there.  

I have created a new disk for the production machine and taken this vmdk out of the production environment to figure out what is going on.  I have vmotioned it to another volume, (twice) run sdelete -z, told windows to optimize it.

What does it take to get the vmdk to shrink??????
0
Free Tool: Site Down Detector
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Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Is it a good practice to specify the thread size at the time of the thread creation ?

I thought that this is better handled by the OS.
Any reference to this ?

Thanks
0
Hi,
In my company we have the outlook connected to an enterprise exchange account.
I'm working in IT department and me and other partners need to work with virtual machines and we have installed VMWare Player 12 to create the VM's.
The SO is Windows 7 Professional x64
The story starts about 6 months ago When I have installed VMplayer 12.
After installing the VMware Player 12, I start having issues connecting to exchange server. instead "Conect to exchange server" appears "Trying to connect". The delay varies from 30 min to 5 hours.
Since I have used player before without problems, I search for a fix. I Have read that uninstalling the windows updates KB3161949, KB3161958, KB3163245, KB3164033 and KB3170455 solves the problem.
After restart the pc, ithe issue is fixed, but until next week because the system center configuration manager reinstall the updates.
I had created a powershell script to remove all 5 updates every week.
Few weeks later, I tried to uninstall the player and install the workstation to see if the problem remains.
It starts connecting without trouble when opening outlook.

Searching the web I saw that the VMWare Workstation uses the port 443 (SSL) to connect to virtualization server (not the case oof player).
I read that is enough to switch the port 443 in workstation to 8443. at that time it starts working with port 8443 and connects immediatly.
But the problem is that the other colleguees uses the free version of VMware player.

To try …
0
We just bought some scale computing servers, and are running our VMs on Microsoft 2008 R2 and 2012 R2.
We were running HP servers with Microsoft Datacenter for the host servers, which allowed us to have an unlimited amount of VMs.  Now since we're not running Microsoft on our Host servers, do I have to buy an individual server OS license for each VM?
1
is there a DOS command to run to get list of all NT group that contain a certain word like 'sql', 'Reporting' etc.
thanks.
0
hello,

i have a problem, i have many servers where the KB cannot installed, system tell this UPDATE is not applicable to your system.

i use this KB for our Windows 2008R2 server: windows6.1-kb4012212-x64_2decefaa02e2058dcd965702509a992d8c4e92b3

what i have see, is this KB i can install without problem on Window 2008 R2 SP1, but not on WINDOWS 2008 R2 SP0:

OS Version
Microsoft Windows Server 2008 R2 Standard  6.1.7601 (SP1) [x64-based PC] ==> KB is installed OK
OS Version
Microsoft Windows Server 2008 R2 Standard  6.1.7600 (SP0) [x64-based PC] ==> KB is not installed

any help plz?

thanks
0
my OS is win 10 pro 64 bit and I use Outlook owa and i have the Office 365 Business Essentials account.
In my Outlook email, I use msn email, the free version.  
From time to time I get emails and sometimes they are similar offers but from different email accounts.
Is it possible by looking at the headers if I could ascertain that Email sender A and Email sender B, are actually the same person from the same location, etc.  If yes, how and where do I look for this information.  Or is there any software that could do this or a web site. Thank u
0

Operating Systems

34K

Solutions

18

Articles & Videos

35K

Contributors

Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.