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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I use more than 1 computer in my office for various reasons. Multiple keyboards and mice take up more than just extra space, they make working a little more complicated. Using one mouse and keyboard for all of my computers makes life easier. This combined with automation s/w makes my work a breeze.
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by:Thomas Zucker-Scharff
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Here are several of the scripts to automate tasks in EndNote.  They currently work for me, but your mileage may vary.
backup.ahk
findrefupdates.ahk
import-file.ahk
savetextfromemail-with-clipboard.ahk
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Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

#Citrix #POC #XenDesktop #vCenter #VMware #ESX
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Windows 10 is here and for most admins this means frustration and challenges getting that first working Windows 10 image. As in my previous sysprep articles, I've put together a simple help guide to get you through this process. The aim is to achieve that first deployment image quickly and easily.
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by:Hariiri Ishak
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Is there any Video for this article?
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by:Kyle Santos
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Hi Hariiri Ishak,

The author has not made a video for this article.

However, if you have a question about this article you can go here and ask a question about this article.  https://www.experts-exchange.com/askQuestion.jsp
Make sure to provide the link to the article as well so people know what you're referring to.
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In this article we will discuss all things related to StageFright bug, the most vulnerable bug of android devices.
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by:Yashwant Vishwakarma
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Hi Footech,
Thank you for your suggestion. I will keep it in mind and will try to make articles better in future.
Yes earlier grammatical mistakes was there but lherrou ( Expert Exchange Editor ) already fixed.
And yes I am not good at English but from all of your support I can learn better.

Have a great day ahead :)
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by:footech
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I appreciate the effort that goes into making an article, especially in English when that is not your first language.

I don't think that "there are billions of billions users using android OS worldwide" (bold added by me for emphasis).
There aren't that many people in the world.  :)
The last statement I saw (claiming it came from a Google head) said that there are now one billion Android users.
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Library Card Catalog Drawer Search Concept
Windows 7 does not have the best desktop search built in. This is something Windows 7 users have struggled with. You type something in, and your search results don’t always match what you are looking for, or it doesn’t actually work at all. There are a couple of things you can do to try to improve t
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by:Kyle Santos
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Great job!
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by:Yashwant Vishwakarma
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Good One !!! Voted Yes !!! Thumbs Up !!!
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I. Introduction

There's an interesting discussion going on now in an Experts Exchange Group — Attachments with no extension. This reminded me of questions that come up here at EE along the lines of, "How can I tell the type of file from its contents?", as well as, "What kind of file has the XXX extension?" Writing an article to address this has been on my to-do list for a long time — the group discussion has inspired me to do it.

II. Determine the type of file from its XXX extension

Here are four links that can help in determining what an XXX file is:

http://extension.nirsoft.net/XXX
http://www.fileinfo.com/extension/XXX
http://filext.com/file-extension/XXX
http://www.solvusoft.com/en/file-extensions/file-extension-XXX

Simply replace XXX with the file extension of interest. For example,

http://extension.nirsoft.net/TIFF
http://www.fileinfo.com/extension/AHK
http://filext.com/file-extension/xhtml
http://www.solvusoft.com/en/file-extensions/file-extension-opd

III. Determine the type of file from its contents

Now to the trickier question! An excellent file identifier application called TrID analyzes the contents of a file in an attempt to figure out what type of file it is. It comes in both a command line interface (CLI) version (for Windows and Linux) and a Graphical User Interface (GUI) version (Windows only) called TrIDNet
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by:Joe Winograd, EE MVE 2015&2016
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Hi Bill,
Thanks for the kind words and the upvote — much appreciated! I like your "Dealing With Unknown Files and File Extensions" title — it's better than the one I chose. Regards, Joe
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by:Duncan Roe
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The Linux file command gets the file type right every time (file extensions are a Windows thing I guess)
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In a recent article here at Experts Exchange, I discussed my nine-month sandbox testing of the Windows 10 Technical Preview, specifically with respect to running Nuance's PaperPort 14.5. I received a private message from a fellow PaperPort user who read the article asking me if I'm aware that Windows 10 is using my computer to help distribute itself. I was not aware of it!

Perhaps I missed this during my nine-month experimentation with the W10 Technical Preview, or maybe Microsoft added that feature only in the official release (Build 10240), but when I checked it out, it is true. I was very surprised to find that W10 is, in essence, using my PC as a peer-to-peer server in distributing updates and apps, and I figured that other Experts Exchange members may also not be aware of it. So I decided to write this article, which also shows how to disable it.

Sidebar:  During the article review process, an EE Page Editor (MASQ) pointed out that this feature was introduced in March with Build 10036 — I did, indeed, miss it! My thanks to MASQ for this information, and for providing a link to Leaked Windows 10 build hints at peer-to-peer patching, an interesting article about it in The Register.

First, I'll explain how to find the feature (the screenshots in this article are from Version 10.0, Build 10240, created via an automatic update from the Technical Preview version of the Windows Insider Program):

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by:MtHolly
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So, does turning off WUDO "Updates From More Than One Place" stop my system from distributing Windows 10 and updates?  Or, just stop it from getting updates from unknown sources?
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by:Joe Winograd, EE MVE 2015&2016
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Hi MtHolly,
Turning it off does both — (1) stops your system from getting updates and apps from other PCs (meaning it gets them just from Microsoft) and (2) stops your system from distributing/sending updates and apps to other PCs. Regards, Joe
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Sometimes a user will call me frantically, explaining that something has gone wrong and they have tried everything (read - they have messed it up more and now need someone to clean up) and it still does no good, can I help them?!  Usually the standard restart will fix most ills.  In this case a restart was unproductive.  It took me a moment to figure out this was probably something fairly simple and, most likely had happened to someone else already (which meant there was likely to be a solution online).
 

The problem:


You are working on a Windows 8.x laptop and you have an experience where your screen is suddenly all sideways,

(I  will confess, up front, that the solution to this dilemma did not come to me unbidden, or even with great effort.  I googled it and found something that looked like my problem and found a way to fix it. )

001-flipped.PNGYes sideways.  Or if you have a web browser open it may look like this one:
002-flipped.PNG

Note that if your machine is anything like my laptop or the one I fixed, it has a touchpad to control the mouse.  Everything is flipped.  So right is down and left is up, while up goes to the right and down goes to the left.  
 

The Solution:


There is an easy fix (which I found here and another Microsoft link here).  The basics in this article were good enough to get me started.  My desktop did not have the checkbox (allow the screen to auto-rotate) like the one pictured here.  This seems to only exist if you have a screen that flips as in a 2-in-1.
004-screen-res-cp.PNG
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by:Predrag
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What was not in the article is why this is happening, this functionality is not part of Windows 7, 8, 10 etc by default.
Those hot keys are part of Intel Graphic and Media Control Panel and can be disabled (it is enabled by default), or if you want you can change key sequence (not recommended).
:)Intel Hot key
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by:Thomas Zucker-Scharff
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Didn't know that.  I will investors and amend article of necessary.
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Android System Updating
As the title indicates, I have done this before. It chills me everytime I update the OS on my phone, because one time I did this and I essentially had a bricked phone. Such is the price for being on the bleeding edge. Anyway, the morning of July 8, 2015, I received a push update of the OS on my Verizon Samsung Galaxy S5. It indicated that I needed a total of 800mb to do the update. I figured why not and went ahead with it. It was only after it had started, that I got nervous.

When I saw this screen...

2015-07-08-05.52.47.jpg... there was a similar screen when my device imploded, so I started to worry. It didn't help that according to one of my apps, I have 661 apps; I was hoping that this meant it wasn't optimizing built-in apps. Last time it counted all the way up to the second number and then reset and had a different number (fewer). But this time everything SEEMED to go smoothly. The system finished optimizing and rebooted. I was able to access most of my apps although some insisted that they didn't exist. I wasn't able to investigate any further, because at that time the device decided to reset. It hadn't warned me that it would take a long time on the Verizon screen after boot up, so I was a little worried when it had been booting on that screen for between 5 and 10 minutes. …
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by:Brandon Lyon
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Optimizing apps normally happens when doing an OS update for major versions. This is especially true for the Lollipop update due to Google's major code refactoring.

How does one acquire that many apps...? My phone doesn't even have 100 apps and I use it for hours every day.
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by:Thomas Zucker-Scharff
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I use my phone for virtually everything. I also do beta testing for Android apps and am subscribed to the amazon app of the day and use the app of the day app (better than amazon).

It is a lot, especially for my 16gb S5.  I store a majority of my apps on my 64gb card.
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I don't know if many of you have made the great mistake of using the Cisco Thin Client model with the management software VXC. If you have then you are probably more then familiar with the incredibly clunky interface, the numerous work arounds, and the awful customer support. I can not tell you the countless hours i have spent on the phone with Cisco attempting to fix issues.

Well I have good and bad news for you all. Cisco has "End of Lifed" this platform and will no longer continue to support or sell it. The official timeline for this is below. But for some of you who have invested a lot of time and more importantly money into the product are probably pretty upset.

http://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/virtualization-experience-client-manager/eos-eol-notice-c51-731181.html

Well, there is a solution out there: the Dell Wyse Platform. The VXC platform was "purchased" from Wyse and simply branded by Cisco and they made a few coding changes but all in all the source code is the same. Even the asthetic look of the software is almost identical to the VXC. However, Wyse takes much better care of the software and has had out for quite some time a version of the management software that is compatible with Windows Server 2012 R2, that is something those of us with Cisco have been waiting for, for a while.

Wyse also releases patches much more quickly and has much better support, as well as an FAQ with discussion boards and forums. And the…
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by:Bradley Bishop
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How much are the Clients? We can get Wyse clients for around 300 and they are pretty good machines.
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by:jbla9028
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We are looking at Wyse with Cloud Client Manager. Are you aware if it's able to manage both WyseOS and Windows Embedded TCs? We're also looking at the desktop extender LinuxOS to load on old laptops to keep them from going obsolete. Working with a rep there but haven't gotten answers yet. Looking for a way to manage all the ThinClient settings from one management interface. Switching from the Teradici zero client  model .
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What does it mean to be "Always On"?
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What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Many people tend to confuse the function of a virus with the one of adware, this misunderstanding of the basic of what each software is and how it operates causes users and organizations to take the wrong security measures that would protect them against attacks.

For starters, let’s define what they are: virus and adware are two different types of malware, each exploiting different aspects of computing architecture to carry out their payload. Malware is simply a category used to refer to software designed to disrupt normal system operations, example of malware are: virus, adware, spyware, Trojan, rootkit, bot, etc.

Let’s go back to our original topic and go over what makes a computer virus a virus,  a Computer Virus is a malicious program that can replicate itself without user interaction by exploits Operating System, Applications, and software vulnerabilities. What the virus does after it’s been executed is another story, though the common denominator is that it’ll disrupt normal system operations and it will attempt to replicate itself.

Something interesting about computer virus is that as much as they can be sophisticated programs most of them pray on users’ vulnerabilities for the initial installation, also known social engineering. “Good” virus writers also study human behavior and emotions hence the I Love you Virus ,they plan their initial attack to align themselves with special occasions, dates, …
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by:Thomas Zucker-Scharff
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Jorge,

This is an excellent article, but I am surprised that you did not correct more of the mistakes - they make it harder to read (I'm also surprised that a page editor didn't point that out).
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by:Yashwant Vishwakarma
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Another good article, voted YES.

Regards,
Yashwant Vishwakarma
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Just about everyone has an old PC laying around.  Ask anyone in the IT industry, whether they are a professional or play in it as a hobby.  From outdated Desktops to cheap "throwaway" laptops, they are all around and not as hard to "fix up" as you might imagine.

No matter if you are looking to 'transform' an old machine, wanting to get rid of those pesky malicious viruses that nothing else has been able to remove, or even just wanting an afternoon project, you may find some joy with this article and rebuilding your machine from the Operating System (OS) up.

Reviewing Your Options
While some users will be more interested in enhancing an old machine starting with the hardware, you may be surprised to learn that you don't have to have the latest and greatest hardware to freshen up that old system.  In this Article, we will explore using a free OS that is readily available online and community supported to get the face-lift you wee looking for.  FREE you ask?  Completely free!  Let's think outside the box and explore those options and break the chains of Commercial Operating Systems!  Why shell out your hard-earned money on your hobby?

System Requirements
Working with an older system?  Still running (or used to run) WinXP or the long dead Win95?  You're in luck.  Many free OS's are more compact and self-sufficient than most Windows OS Packages.  Spend a few minutes waiting on a download, a 4GB to 8GB USB Stick (or even writable CD) and you are half-way done!

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by:käµfm³d 👽
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I think a clarification in the title is warranted. I initially thought this was going to be an article about upgrading hardware, not the OS.
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by:younghv
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I agree that the title should be clarified and the "Type" designation changed. This is not a "Tutorial", but more like a briefing of potential options.

Basically a good idea to offer a discussion of OS options but I would have preferred some more 'meat on the bones' of the idea.
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Bada platform is becoming more and more famous this days and people talking about same. Some friends included those who have bada OS mobile asked me "what is bada?"and "what its features?". That encouraged me to research and write this article.
[step="" title="What is BADA :"]
The word BADA is derived from a Korean word  it means ocean seashore. It is Samsung's Own Operating System for Mobile Phones with good hardware like 1ghz processor and 512 mb ram. Its more than enough and power full hardware. The Samsung Bada OS maintains flash control, web control, motion-sensing fine-tuned shaking control, and face recognition.
[/step][step="" title="Who is owner or provider :"]
Samsung is the developer and owner of BADA platform. This is Samsung’s own operating system for smart phones anywhere Samsung Wave S8500 is the first mobile phone that determine ever utilize this OS.
[/step][step="" title="History :"]
Samsung s8500 is the first BADA mobile with BADA 1.0 then it updated to 1.0.2 and s8530 with BADA 1.2 and now BADA 2.0  is released .
[/step][step="" title="Features"]
The Bada resolve is to present a characteristic-rich display place for a new mobile computing familiarity. Touch Wiz UI.
[/step][step="" title="What I like:"]
- speed and user friendly view .
- no hang problem or that kind of any .
- app are good and graphics are great .
[/step][step="" title="What I do not like:"]
- No SMS or mms from other app for old version 1.0
- Security …
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by:Viral Rathod
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Good article.
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by:d4durvesh
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Nice.
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Hello

I read in a discussion about a person who configured a very simple mirror RAID with two hard drives; the system and data were on the same partition. He asked how to repair the system as it was not booting up anymore.

In his case running chkdsk was enough to restore the master boot record functionality, but this will not always work. My suggestions below provide an escape route from this situation where your data is not recoverable.

First, frequently back up all your data to some external storage such as another PC or an external hard disk. It does not matter whether you use RAID; data can be lost anyway. If needed, save the drivers and configuration, a list of all programs you previously installed, and don't forget to reinstall tools and other things you might need later on.

The person was very absorbed by trying to make the broken hard drive bootable again, but my question is:
"Why should you make it bootable again?"

Anyone working with this setup should consider himself lucky at any time not to have lost it all. As a matter of fact, it seems the person did not save an image using a hard drive cloning tool; if he did, he would still have the the possibilty to restore the MBR, the first sectors, the partition table and/or the partitions/whole disk to an optimal condition. Those images are best created immediately after a fresh mint installation or after a restore on which are added major modifications.

When using a RAID it is also wise …
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Introduction
How to create multiboot configuration with XP\Vista and Windows 7 on it? And most important question - how to do this correctly so not to have any kind of nightmares we get when system gets screwed?

First of all one should realize that Windows uses the same Boot Manager for XP based or Vista based systems. When you install XP it installs  Boot Manager into MBR that controls OS load order. In case you install Vista to second partition without doing some precaution steps we're going to describe in this article then you risk installing boot files into existing system and OS files into second partition. Sure this will rewrite previous boot manager too so to make it handle both OSes. It means that boot order will be handled by one boot manager and in case of this  Boot Manager corruption you have a good chance to stay with none of your OSes loading. Good perspective, isn't it?

Let's imagine that we have a system with XP or Vista (in nearest future Windows 7) installed on it and you have a good feeling that you need one more OS. Just to look at it or use it for older programs (newer programs). What are the steps?

As an example we will take Paragon Partition Manager 10/11 product though other vendors do provide similar functionality too.

First stage:
 
Create Recovery CD from interface of this Partition Manager.
Boot system from the created CD and get into
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by:arober11
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by:noxcho
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Than you.
Nox
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Introduction

Often we come across situations wherein our batch files would be needing to reboot Windows for a variety of reasons. A few of them would be like:

(1) Setup files have been updated whose changes can take effect only after a reboot of the system has happened.
(2) A file got locked or a Windows service is not responding. If such a step is detected in the installation procedure, the only remedial step that might be left is to have the system restarted and then to resume the installation.

Quick ways to reboot Windows
This tip ushers to present you with simple ways to achieve Windows restart through quick commandline options without depending on or asking to the user to manually reboot the box.

iisreset /timeout:1 /rebootonerror: This would attempt to restart IIS Services within a timeframe mentioned in the timeout attribute. If this fails, the system itself is given a reboot.

shutdown -r: Windows XP ships with a neat little utility to restart/shutdown/logoff a user. A quick shutdown -r would help to restart a Windows XP box. Appending a -m \\computername would have the restart command sent to the computer named as computername, subject to the logged on user having restart privileges on the target machine.

Taking help of RunDll32
The rundll32.exe also lends a great helping hand in rebooting, shutting down and logging off the user. However, the arguments to be passed for each …
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Occasionally Windows/Microsoft Updates will fail to update. We have found a code that will delete all temporary files and re-register all dll's related to Windows/Microsoft Updates! This works 99% of the time to get the updates working again!

The code snippet is for a batch file. Copy the code to a text file and rename the file (whatever you want).bat
Then run the batch file!

net stop wuauserv
rmdir %windir%\softwaredistribution /s /q
rmdir %windir%\system32\softwaredistribution /s /q
regsvr32 /s wuaueng.dll
regsvr32 /s wuaueng1.dll
regsvr32 /s atl.dll
regsvr32 /s wups.dll
regsvr32 /s wups2.dll
regsvr32 /s wuweb.dll
regsvr32 /s wucltui.dll
net start wuauserv
pause
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by:younghv
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suresh_boga:

I'm not sure what you are thinking, but that "Dial-a-fix" appears not to have been updated since March 2006.

Surely our readers would be better served by using current tools?

The link posted by 'dstewart' would seem to be much the better decision.
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by:suresh_boga
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younghv:

Agree with your comment but wrt article - DAF is powerfull tool for Windows OS till XP SP3
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Operating Systems

34K

Solutions

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.