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  • Unity Occlusion Portals: What and How?

    - by Nick Wiggill
    (Here I eat my words on Meta about posting Unity questions on Unity Answers... since that site is less responsive than this one.) Unity provides cell-based Occlusion Culling (via Umbra, I believe). However, a newer feature that it supports is Occlusion Portals. The question is, if BSP-based occlusion culling is already a feature of Unity, what do portals add, and how? PS. This question is not "What are portals?" -- I'm aware of the original Quake BSP-style portals -- which is partly why I find the explicit portal concept in Unity odd, since it uses BSP anyway.

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  • When to do Code Review

    - by mcass20
    We have recently moved to a scrum process and are working on tasks and user stories inside of sprints. We would like to do code reviews frequently to make them less daunting. We are thinking that doing them on a user story level but are unsure how to branch our code to account for this. We are using VS and TFS 2010 and we are a team of 6. We currently branch for features but are working on changing to branching for scrum. We do not currently use shelvesets and don't really want to implement if there are other techniques available. How do you recommend we implement code review per user story?

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  • Your Next IT Job

    - by BuckWoody
    Some data professionals have worked (and plan to work) in the same place for a long time. In organizations large and small, the turnover rate just isn’t that high. This has not been my experience. About every 3-5 years I’ve changed either roles or companies. That might be due to the IT environment or my personality (or a mix of the two), but the point is that I’ve had many roles and worked for many companies large and small throughout my 27+ years in IT. At one point this might have been a detriment – a prospective employer looks at the resume and says “it seems you’ve moved around quite a bit.” But I haven’t found that to be the case all the time –in fact, in some cases the variety of jobs I’ve held has been an asset because I’ve seen what works (and doesn’t) in other environments, which can save time and money. So if you’re in the first camp – great! Stay where you are, and continue doing the work you love. but if you’re in the second, then this post might be useful. If you are planning on making a change, or perhaps you’ve hit a wall at your current location, you might start looking around for a better paying job – and there’s nothing wrong with that. We all try to make our lives better, and for some that involves more money. Money, however, isn’t always the primary motivator. I’ve gone to another job that doesn’t have as many benefits or has the same salary as the current job I’m working to gain more experience, get a better work/life balance and so on. It’s a mix of factors that only you know about. So I thought I would lay out a few advantages and disadvantages in the shops I’ve worked at. This post isn’t aimed at a single employer, but represents a mix of what I’ve experienced, and of course the opinions here are my own. You will most certainly have a different take – if so, please post a response! I also won’t mention a specific industry – I’ve worked everywhere from medical firms, legal offices, retail, billing centers, manufacturing, government, even to NASA. I’m focusing here mostly on size and composition. And I’m making some very broad generalizations here – I am fully aware that a small company might have great benefits and a large company might allow a lot of role flexibility.  your mileage may vary – and again, post those comments! Small Company To me a “small company” means around 100 people or less – sometimes a lot less. These can be really fun, frustrating places to to work. Advantages: a great deal of flexibility, a wide range of roles (often at the same time), a large degree of responsibility, immediate feedback, close relationships with co-workers, work directly with your customer. Disadvantages: Too much responsibility, little work/life balance, immature political structure, few (if any) benefits. If the business is family-owned, they can easily violate work/life boundaries. Medium Size company In my experience the next size company I would work for involves from a few hundred people to around five thousand. Advantages: Good mobility – fairly easy to get promoted, acceptable benefits, more defined responsibilities, better work/life balance, balanced load for expertise, but still the organizational structure is fairly simple to understand. Disadvantages: Pay is not always highest, rapid changes in structure as the organization grows, transient workforce. You may not be given the opportunity to work with another technology if someone already “owns” it. Politics are painful at this level as people try to learn how to do it. Large Company When you get into the tens of thousands of folks employed around the world, you’re in a large company. Advantages: Lots of room to move around – sometimes you can work (as I have) multiple jobs through the years and yet stay at the same company, building time for benefits, very defined roles, trained managers (yes, I know some of them are still awful – trust me – I DO know that), higher-end benefits, long careers possible, discounts at retailers and other “soft” benefits, prestige. For some, a higher level of politics (done professionally) is a good thing. Disadvantages: You could become another faceless name in the crowd, might not allow a great deal of flexibility,  large organizational changes might take away any control you have of your career. I’ve also seen large layoffs happen, and good people get let go while “dead weight” is retained. For some, a higher level of politics is distasteful. So what are your experiences? Share with the group! Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • Tool to convert Textures to power of two?

    - by 3nixios
    I'm currently porting a game to a new platform, the problem being that the old platform accepted non power of two textures and this new platform doesn't. To add to the headache, the new platform has much less memory so we want to use the tools provided by the vendor to compress them; which of course only takes power of two textures. The current workflow is to convert the non power of tho textures to dds with 'texconv', then use the vendors compression tools in a batch. So, does anyone know of a tool to convert textures to their nearest 'power of two' counterparts? Thanks

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  • Daylight saving time: Annoying and pointless [closed]

    - by polemon
    Daylight saving time is a big annoyance for me. Not just from the standpoint, that I never know when we set our clocks an hour ahead or an hour back. Setting the clock ahead or back disturbs my time organization, and is responsible for my bad mood around that day. From the standpoint of a programmer, it's no less annoying. you always have to check whether it isn't "that date" in the year, when you have to work with local time. I hear people have the same views on this that I have. also, I don't see any benefits from it. The supposedly added "extra hour" of sunlight; I don't feel that. In case you live in a region where daylight savings is observed (like in Germany, where I live), please tell me how you manage the annoyances that come with it, and (if possible) how to get rid of it, once and for all...

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  • Where do service implementations fit into the Microsoft Application Architecture guidelines?

    - by tuespetre
    The guidelines discuss the service layer with its service interfaces and data/message/fault contracts. They also discuss the business layer with its logic/workflow components and entities as well as the 'optional' application facade. What is unclear still to me after studying this guide is where the implementations of the service interfaces belong. Does the application facade in the business layer implement these interfaces, or does a separate 'service facade' exist to make calls to the business layer and it's facade/raw components? (With the former, there would be less seemingly trivial calls to yet another layer, though with the latter I could see how the service layer could remove the concerns of translating business entities to data contracts from the business layer.)

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  • How should I design a wizard for generating requirements and documentation

    - by user1777663
    I'm currently working in an industry where extensive documentation is required, but the apps I'm writing are all pretty much cookie cutter at a high level. What I'd like to do is build an app that asks a series of questions regarding business rules and marketing requirements to generate a requirements spec. For example, there might be a question set that asks "Does the user need to enter their age?" and a follow-up question of "What is the minimum age requirement?" If the inputs are "yes" and "18", then this app will generate requirements that look something like this: "The registration form shall include an age selector" "The registration form shall throw an error if the selected age is less than 18" Later on down the line, I'd like to extend this to do additional things like generate test cases and even code, but the idea is the same: generate some output based on rules determined by answering a set of questions. Are there any patterns I could research to better design the architecture of such an application? Is this something that I should be modeling as a finite state machine?

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  • Find the latest file by modified date

    - by Rich
    If I want to find the latest file (mtime) in a (big) directory containing subdirectories, how would I do it? Lots of posts I've found suggest some variation of ls -lt | head (amusingly, many suggest ls -ltr | tail which is the same but less efficient) which is fine unless you have subdirectories (I do). Then again, you could find . -type f -exec ls -lt \{\} \+ | head which will definitely do the trick for as many files as can be specified by one command, i.e. if you have a big directory, -exec...\+ will issue separate commands; therefore each group will be sorted by ls within itself but not over the total set; the head will therefore pick up the lastest entry of the first batch. Any answers?

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  • Real life example of an agile game development process

    - by Ken
    I'm trying to learn about applying agile methodologies to game development. But seems to be impossible to find real life examples. What I am looking for are things like; Initial user stories Final user stories (complete, covering the entire game requirements) Acceptance criteria Task list Sprint backlogs (before and after each sprint) The agile books seem to have some limited examples, many of which seem contrived. In this era of open source software, there must be an documented example of the process applied to a game that is publicly available. I am asking specifically about games because they are so different from normal applications. Regular applications are built to all users to complete specific tasks in order to get stuff done(book a room, print a report etc). People play games for much less tangible reasons, so I think the process is significantly different. [it doesn't have to be scrum, it could be any process, just needs to be a real life example game and be reasonably complete]

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  • What is the easiest and shortest way to draw a 2d line in c/c++?

    - by Mike
    I am fairly new to c/c++ but I do have experiance with directx and opengl with java and c#. My goal is to create a 2d game in c with under 2 pages of code. Most of what I have seen requires 3 pages of code to just get a window running. I would like to know the shortest code to get a window running where I can draw lines. I believe this can be done in less lines with opengl versus directx. Is there maybe an api or framework i can use to shorten it more? Also, it would be nice if the solution were cross platform compatible.

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  • Fair 2-combinations

    - by Tometzky
    I need to fairly assign 2 experts from x experts (x is rather small - less than 50) for every n applications, so that: each expert has the same number of applications (+-1); each pair of experts (2-combination of x) has the same number of applications (+-1); It is simple to generate all 2-combinations: for (i=0; i<n; i++) { for (j=i+1; j<n; j++) { combinations.append(tuple(i,j)); } } But to assign experts fairly I need to assign a combination to an application i correct order, for example: experts: 0 1 2 3 4 fair combinations: counts 01234 01 11000 23 11110 04 21111 12 22211 34 22222 02 32322 13 33332 14 34333 03 44343 24 44444 I'm unable to come up with a good algorithm for this (the best I came up with is rather complicated and with O(x4) complexity). Could you help me?

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  • What types of programming require practical category theory?

    - by Alexander Gruber
    Category theory has applications in theoretical computer science and obviously is central to abstract mathematics. I have heard that it also has direct practical applications in programming and software development. What type of programming is practical category theory necessary for? What do programmers use category theory to accomplish? Please note my use of "necessary" and "require" in this post. I realize that in some sense most programmers will benefit from having experience in different types of theories, but I am looking for direct applications where the usage of category theory is essential, i.e. if you didn't know category theory, you probably couldn't do it. Also, I'd like to clarify that by "what type of programming," I am hoping less for a broad answer like "functional programming," and more for specific applications like "writing bank software" or "making operating systems."

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  • What are the pro/cons of Unity3D as a choice to make games ?

    - by jokoon
    We are doing our school project with Unity3d, since they were using Shiva the previous year (which seems horrible to me), and I wanted to know your point of view for this tool. Pros: multi platform, I even heard Google is going to implement it in Chrome everything you need is here scripting languages makes it a good choice for people who are not programming gurus Cons: multiplayer ? proprietary, you are totally dependent of unity and its limit and can't extend it it's less "making a game from scratch" C++ would have been a cool thing I really think this kind of tool is interesting, but is it worth it to use at school for a project that involves more than 3 programming persons ? What do we really learn in term of programming from using this kind of tool (I'm ok with python and js, but I hate C#) ? We could have use Ogre instead, even if we were learning direct x starting january...

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  • Getting out of my head

    - by BenCole
    (I put this on SO, but it got a couple close votes saying it belonged here instead...) I've spent the last year as a single person team developing a rich-client application (35,000+ LoC, for what it's worth). It's currently stable and in production. However, I know that my skills were rusty at the beginning of the project, so without a doubt there are major issues to the code. At this point, most of the issues are in architecture, structure, or interactions - the easy problems, even architecture/design problems, have already been weeded out. Unfortunately, I've spent so much time with this project that I'm having a hard time thinking outside of it - approaching it from a new perspective to see the flaws deeply buried or inherent in the design. How do I step outside my head and outside my code so I can get a fresh look at this code so I can make it better? Is this less of an issue than I think it is, or is this a problem for other people as well?

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  • Sharing banners on 3rd party websites, concerned about limited resources on on server side

    - by Omne
    I've made a banner for my website and I'm planning to ask my followers to share it on their website to help improve my rank. my website is hosted on GAE, the banners are less than 5kb/each and I must say that I don't want to pay for extra bandwidth I've read the Google App Engine Quotas but honestly I don't understand anything of it. Would you please tell me which table/data in this page should be of my concern? Also, do you think it's wise to host such banners, that are going to end up on 3rd party websites, on the GAE? or am I more secure if I use free online services like Google Picasa?

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  • Agile Executives

    - by Robert May
    Over the years, I have experienced many different styles of software development. In the early days, most of the development was Waterfall development. In the last few years, I’ve become an advocate of Scrum. As I talked about last month, many people have misconceptions about what Scrum really is. The reason why we do Scrum at Veracity is because of the difference it makes in the life of the team doing Scrum. Software is for people, and happy motivated people will build better software. However, not all executives understand Scrum and how to get the information from development teams that use Scrum. I think that these executives need a support system for managing Agile teams. Historical Software Management When Henry Ford pioneered the assembly line, I doubt he realized the impact he’d have on Management through the ages. Historically, management was about managing the process of building things. The people were just cogs in that process. Like all cogs, they were replaceable. Unfortunately, most of the software industry followed this same style of management. Many of today’s senior managers learned how to manage companies before software was a significant influence on how the company did business. Software development is a very creative process, but too many managers have treated it like an assembly line. Idea’s go in, working software comes out, and we just have to figure out how to make sure that the ideas going in are perfect, then the software will be perfect. Lean Manufacturing In the manufacturing industry, Lean manufacturing has revolutionized Henry Ford’s assembly line. Derived from the Toyota process, Lean places emphasis on always providing value for the customer. Anything the customer wouldn’t be willing to pay for is wasteful. Agile is based on similar principles. We’re building software for people, and anything that isn’t useful to them doesn’t add value. Waterfall development would have teams build reams and reams of documentation about how the software should work. Agile development dispenses with this work because excessive documentation doesn’t add value. Instead, teams focus on building documentation only when it truly adds value to the customer. Many other Agile principals are similar. Playing Catch-up Just like in the manufacturing industry, many managers in the software industry have yet to understand the value of the principles of Lean and Agile. They think they can wrap the uncertainties of software development up in a nice little package and then just execute, usually followed by failure. They spend a great deal of time and money trying to exactly predict the future. That expenditure of time and money doesn’t add value to the customer. Managers that understand that Agile know that there is a better way. They will instead focus on the priorities of the near term in detail, and leave the future to take care of itself. They have very detailed two week plans with less detailed quarterly plans. These plans are guided by a general corporate strategy that doesn’t focus on the exact implementation details. These managers also think in smaller features rather than large functionality. This adds a great deal of value to customers, since the features that matter most are the ones that the team focuses on in the near term and then are able to deliver to the customers that are paying for them. Agile managers also realize that stale software is very costly. They know that keeping the technology in their software current is much less expensive and risky than large rewrites that occur infrequently and schedule time in each release for refactoring of the existing software. Agile Executives Even though Agile is a better way, I’ve still seen failures using the Agile process. While some of these failures can be attributed to the team, most of them are caused by managers, not the team. Managers fail to understand what Agile is, how it works, and how to get the information that they need to make good business decisions. I think this is a shame. I’m very pleased that Veracity understands this problem and is trying to do something about it. Veracity is a key sponsor of Agile Executives. In fact, Galen is this year’s acting president for Agile Executives. The purpose of Agile Executives is to help managers better manage Agile teams and see better success. Agile Executives is trying to build a community of executives that range from managers interested in Agile to managers that have successfully adopted Agile. Together, these managers can form a community of support and ideas that will help make Agile teams more successful. Helping Your Team You can help too! Talk with your manager and get them involved in Agile Executives. Help Veracity build the community. If your manager understands Agile better, he’ll understand how to help his teams, which will result in software that adds more value for customers. If you have any questions about how you can be involved, please let me know. Technorati Tags: Agile,Agile Executives

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  • Why doesn't LightDM always doesn't start under XEN

    - by DaedalusFall
    When I use XEN on Ubuntu (12.10), I have a problem that lightdm sometimes doesn't start when I boot up, I have to log in on the TTY and use sudo service lightdm restart, sometimes several times. Some of the time I get a mouse cursor and a blinking underscore in the top left of the (otherwise black) screen, but after restarting lightdm a few times it eventually comes up properly. I've tried this with XEN from the repos (version 4.1), XEN 4.2 built from source, an NVIDIA card and a radeon card (not using fglrx, which I can't seem to make work under XEN), the results are more or less the same. I can't see anything obvious in my Xorg.log, but I'm not really sure what to look for. Anyone had similar problems or luck getting xen working? Thanks in advance.

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  • Add Reference with Search

    - by Daniel Cazzulino
    If you have been using VS2010 for any significant amount of time, you surely came across the awkward, slow and hard to use Add Reference dialog. Despite some (apparent) improvements over the VS2008 behavior, in its current form it's even LESS usable than before. A brief non-exhaustive summary of the typical grief with this dialog is: Scrolling a list of *hundreds* of entries? (300+ typically) No partial matching when typing: yes, you can type in the list to get to the desired entry, but the matching is performed in an exact manner, from the beginning of the assembly name. So, to get to the (say) "Microsoft.VisualStudio.Settings" assembly, you actually have to type the first two segments in their entirety before starting to type "Settings"....Read full article

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  • Verification of requirements question

    - by user970696
    Doing a lot of reading about V&V, I would need to clarify the following. A lot of definitons (less formal ones found in books) define verification like that: Verification: The software should conform to its specification. But then they speak about requirement verification, design verification etc. If I say that these items are "software" in terms of applying the definitons, what should I checked them against, what specification should requirements, which is the basic information, conform to? And one more thing: shouldnt be requirements also validated? To make sure they meets the customer needs? All texts I have speak only about SW validation on the end of the dev.process..

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  • Page load speeds effect on crawl rate

    - by Sam Pegler
    We've noticed a big drop in the total pages crawled per day on our site, we have no control over the crawl rate in google webmaster tools so it's possible this has been changed by google. However it's a fairly large site and I wouldn't of thought that the crawl rate would've been decreased. What we have noticed though is a sizeable increase in page load times, in my mind this would be the cause. Can anyone else confirm if the crawl rate is directly correlated to page load time? Seems logical, longer page load time, less pages crawled. Any decent documentation on this would be appreciated, I don't normally have any input on SEO so this is new to me.

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  • eReaderLookup Catalogs and Compares Over 100 eBook Readers

    - by Jason Fitzpatrick
    Although the Kindle and Nook get the most press time, there’s a world of ebook readers out there; eReaderLookup helps you search by price, size, screen type, storage, and other parameters to find the perfect ebook reader for your needs. Whether you’re trying to find a reader with an SD card slot, a large screen, or native support for an less-than-popular file format, you can plug it into eReaderLookup and see if a reader exists that fits your needs. If there is more than one reader that matches your search parameters you can easily compare them in a side-by-side setup to quickly compare the stats. Hit up the link below to take it for a spin. eReaderLookup [via MakeUseOf] How to Stress Test the Hard Drives in Your PC or Server How To Customize Your Android Lock Screen with WidgetLocker The Best Free Portable Apps for Your Flash Drive Toolkit

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  • Remove Trusted Site Popup

    - by Mike Koerner
    I keep getting this The current webpage is trying to open a site in your Trusted sites list.  Do you want to allow this? Solution is here http://forums.techarena.in/technology-internet/1218469.htm To turn it off, open your browser, go to Tools > Internet Options > Security > select Trusted Sites > click Custom Level to view the browser settings. "Websites in less privileged web content zone " could be set to prompt. You may want to change the setting to enable or disable instead.

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  • Decrease filesize when resizing with mogrify

    - by plua
    I love the command line options of imagemagick. Mogrify is great to resize images and change quality, which is what I use most often. However, I have noted that the filesize if often larger than what it should be. Especially with small images. For instance, I have a regular 640px (width) photo, which I change to quality 80 and a width of 80px: mogrify -quality 80 -resize 80 file.jpg Works well and my image gets resized and the quality is changed to 80. However, the filesize is around 40Kb. For such a tiny image, that is huge! When I use mtPaint, and open the file and save it (not changing anything, just CTRL+O, CTRL+S), the filesize decreases with more than 95% to less than 2Kb! I have seen this is often the case. What goes wrong?

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  • What algorithm(s) can be used to achieve reasonably good next word prediction?

    - by yati sagade
    What is a good way of implementing "next-word prediction"? For example, the user types "I am" and the system suggests "a" and "not" (or possibly others) as the next word. I am aware of a method that uses Markov Chains and some training text(obviously) to more or less achieve this. But I read somewhere that this method is very restrictive and applies to very simple cases. I understand basics of neural networks and genetic algorithms(though have never used them in a serious project) and maybe they could be of some help. I wonder if there are any algorithms that, given appropriate training text(e.g., newspaper articles, and the user's own typing) can come up with reasonably appropriate suggestions for the next word. If not (links to)algorithms, general high-level methods to attack this problem are welcome.

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  • EM CLI, diving in and beyond!

    - by Maureen Byrne
    v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Doing more in less time… Isn’t that what we all strive to do? With this in mind, I put together two screen watches on Oracle Enterprise Manager 12c command line interface, or EM CLI as it is also known. There is a wealth of information on any topic that you choose to read about, from manual pages to coding documents…might I even say blog posts? In our busy lives it is so nice to just sit back with a short video, watch and learn enough to dive in. Doing more in less time, is the essence of EM CLI. It enables you to script fundamental and complex administrative tasks in an elegant way, thanks to the Jython scripting language. Repetitive tasks can be scripted and reused again and again. Sure, a Graphical User Interface provides a more intuitive step by step approach to tasks, and it provides a way of quickly becoming familiar with a product and its many features, and it is definitely the way to go when viewing performance data and historical trending…but for repetitive and complex tasks, scripting is the way to go! Lets us take the everyday task of creating an administrator. Using EM CLI in interactive mode the command could look like this.. emcli>create_user(name='jan.doe', type='EXTERNAL_USER') This command creates an administrator called jan.doe which is an externally authenticated user, possibly LDAP or SSO, defined by the EXTERNAL_USER tag. The create_user procedure takes many arguments; see the documentation for more information. Now, where EM CLI really shines and shows power is in creating multiple users. Regardless of the number, tens or thousands, the effort is the same. With the use of a standard programming construct, a loop, you can place your create_user() procedure within it. Using a loop allows you to iterate through a previously created list, creating new users until the list is complete. Using EM CLI in Script mode, your Jython loop would look something like this… for user in list_of_users:       create_user(name=user, expire=’true’, password=’welcome123’) This Jython code snippet iterates through a previously defined list of names, list_of_users, and iterates through the list, taking each name, user in this case, and creates an administrator sets the password to welcome123, but forces the user to reset it when they first login. This is only one of over four hundred procedures created to expose Oracle Enterprise Manager 12c functionality in a powerful and programmatic way. It is a few months since we released EM CLI with scripting option. We are seeing many users adapt to this fun and powerful way of using Oracle Enterprise Manager 12c. What are the first steps? Watch these screen watches, and dive in. The first screen watch steps you through where and how to download and install and how to run your first few commands. The Second screen watch steps you through a few scripts. Next time, I am going to show you the basic building blocks to writing a Jython script to perform Oracle Enterprise Manager 12c administrative tasks. Join this growing group of EM CLI users…. Dive in! Normal 0 false false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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