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• How to turn on/turn off leds by terminal?

  - by GarouDan

  I would like turn on/turn off some of my leds running a command on linux. I use Ubuntu 12.04 LTS. I tried xset led named "Scroll Lock" xset led named "Num Lock" xset led 2 (this is the number of Scroll Lock as `xset q` says) xset led 1 but nothing works. Tried setleds +num setleds +scroll but I got a error message saying Error reading the current settings of flags. Maybe you're not on the console? (I was in a terminal). So, how can I perform this?

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• Moving software RAID to Linux

  - by terman

  I'm using a RAID 1 (mirrored pair) configuration in my Media Center/ NAS system. Currently it's running Windows 8 (yeah, big mistake I know) and I'm regretting it (did it for the games, not worth it). Currently I'm having two software RAID 1s (3TB + 2TB) configured with Storage Spaces and unfortunately formatted with NTFS. Now I would like to switch to Fedora (or maybe Ubuntu if there are advantages) for good. Is there a way that I could continue using the disks as they are without the need to format them with ext or something? I'm glad for every tip. Oh, the system disk is of cause not in a raid configuration.

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• First-class help desk solution? [closed]

  - by Andy Gregory

  A help desk, for larger companies is a place for centralized help within an enterprise to help the users of their products and services.Therefore,to find the solution that best fits your business requirements, it is important to research, examine, and compare help desk software. As far as I know,Hesk is an free helpdesk software with some limited features while h2desk can provide the hosted solution. But for my small business,i just need a web based help desk software which can provide ticket management and knowledge base faq. We need unlimited staff support. Maybe a freeware help desk software can not meet our needs. So,we are willing to pay for effective helpdesk solution. But it should be low cost. We have gotten two choice: iKode Helpdesk Nethelpdesk Our helpdesk team are tend to iKode Helpdesk. Any other efficient first-class help desk solution to share?

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• Options to efficiently synchronize 1 million files with remote servers?

  - by Zilvinas

  At a company I work for we have such a thing called "playlists" which are small files ~100-300 bytes each. There's about a million of them. About 100,000 of them get changed every hour. These playlists need to be uploaded to 10 other remote servers on different continents every hour and it needs to happen quick in under 2 mins ideally. It's very important that files that are deleted on the master are also deleted on all the replicas. We currently use Linux for our infrastructure. I was thinking about trying rsync with the -W option to copy whole files without comparing contents. I haven't tried it yet but maybe people who have more experience with rsync could tell me if it's a viable option? What other options are worth considering?

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• Can you convert an address to a zip code in a spreadsheet?

  - by moe37x3

  Given a column of street addresses with city and state but no zip in a spreadsheet, I'd like to put a formula in a second column that yields the ZIP code. Do you know a way to do this? I'm dealing with US addresses, but answers pertaining to other countries are interesting, too. UPDATE: I guess I'm mostly hoping that there's a way to do this in Google Spreadsheets. I realize that you need to access a vast ZIP code database to do this, but it seems to me that such a database is already inside Google Maps. If I put an address in there without ZIP code, I get back an address with ZIP code. If Maps can do that lookup, maybe there's a way to make it happen in Spreadsheets, too.

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• Configure redis to not have everything in memory?

  - by acidzombie24

  I like redis because it lets me do operations on data structures. I wanted to see what would happen if i were to put more data into redis then i have for ram. So i wrote a loop that inserted 30k bytes repeatedly and set maxmemory 100MB. I figure it would stay at 100mb. It kept growing. Past 1gb then past 2gb. Suddenly it crashed because i ran the 32bit version. Now... i dont understand what the point of maxmemory is? I am using the windows version so maybe its ignored. Does redis have to have everything in memory? If i have a site (on linux) with a 10gb database and 512mb on the machine will redis work? I don't need it to be amazingly fast i just prefer to modify data in it then sql (although i hope it is still faster then mysql)

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• Simple CMS (separate files for multiple users) [closed]

  - by Pentium100

  I need a simple CMS software (or maybe it's called something else). There are many users (adding new users has to be simple as it will be done manually, no "sign up" link) and those users have to access (just download, no uploading or modification) some files. A file can be shown just to one user or a group of users (a user can belong to multiple groups). Upload a file and tag which users/groups can access it. This can probably be done with FTP, but HTTP would be better. Any software (preferable open source) that can do this without much modification? I can modify PHP code a bit, but I am not a programmer.

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• Raid 5 scsi fault

  - by HaLaBi

  I have no much knowledge about servers and I was looking all day around the internet about finding a solution to my raid 5 problem. All of a sudden two disks failed. The server won't boot (HP Proliant, windows 2003 R2, very old maybe 10 years old). I know that if one disk is faulty then I can add a new disk and rebuild it and things will be fine, the problem is two went faulty :( is this normal? two at the same time? is there any other thing I can do and I am not aware of? other than taking them out and reinserting them back? Windows won't boot. The Array menu shows that disks 0 and 4 are "Missing". Any other tricks or things to do? It is important because for some unknown reason the back up job did not work for a month and I just found out, so I need to make these raid 5 back online again.

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• Keyboard not responding on startup

  - by Mestika

  I’m having a weird problem with one of the laptops at my work. Every now and then (not a systematic repeating pattern, but kind of random) the keyboard will not function on start up. The computer boots and it gets to the CTRL + ALT + DELETE screen and it is responding to nothing from the keyboard. The mouse works fine. I then try to force a shutdown and reboot the machine and most of the time it then works. My first thought was that it was a hardware malfunction with the keyboard hardware but it seems strange that the computer can be stationed for several days without being removed and it still “loses” connection to the keyboard. The OS is Windows 7 Pro and it is a Dell Laptop Vostro. Does anyone experienced this kind of problem with a laptop with/with out Windows 7 and maybe got a solution to the problem?

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• Monitor sometimes display weird colors and lines when opening a website that contains a video

  - by WEEYE

  This happens 1/50 times when I open a website that contains a video. I don't know if it happens when I open a flash video, but I am sure it has happened when I've opened a HTML5 video. When it happens I have about 2-3 seconds to press Alt + F4 (to close my browser). If I do it in time the screen will get back to normal. If I wait too long to press Alt + F4, maybe 3+ seconds, my screen won't get back to normal when I press Alt + F4. However, when I get stuck in the weird screen I can do all types of things on the computer. the whole computer does not freeze, because if I for example press Win + L I will hear the Windows logout sound. I have HD7870, Windows 7. http://tinypic.com/r/3519tf9/5

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• What is the 'cacert.pem' and for what to use that?

  - by user65567

  I am developing a web application on localhost with domains and sub-domains and I would like to use a HTTPS connection. On my Mac OS, in order to enable SSL, I need to set Apache correctly, so I followed some guide to accomplish part of that. Now it is time to choose a certificate in order to test HTTPS requests. I seen the cacert.pem, but I don't know how to use that and for what it is used (can you explain to me some about its usage?)... So, is it possible to use the cacert.pem (see the link) for all my domains and subdomains (maybe, as a wildcard certificate) on localhost? If so, how to do that? What certificate I have to take and use? If no, what I need to do in order to use a wildcard certificate for all my domains and subdomains on localhost? Of course those certificates must be accepted by browsers and working for HTTPS connection between my domains.

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• CPU/RAM usage log over a period of time to file on CentOS

  - by joel_gil

  Hi everyone Im looking for an app pr line of code that could let me observe a process, save the info in a number of variable and then put the gathered info on a file. Ive been trying with variations of top but no luck. I am running several CentOS virtual servers, VM is 2gb ram 2 processor. Maybe a script that works over a specified amount of time while writing lines with the info on a text file so at the end i can have a sort of table with the data. The thing is Im going to stress test the server and I would like to have the data to make some statistics. Any comments and suggestions are most welcome.

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• Windows 7 extremely long startup

  - by Tyler

  Windows 7 before it even gets to login. On the "starting windows" splash screen takes no less than 15 minutes to finish more like 25 minutes most times. During this time the hard drive activity led indicator is blinking maybe once every 20 seconds. When I finally get to the desktop everything runs normally. I have unplugged all peripherals with same result. Ideas? It's 32bit. 4gig memory. Fast CPU which I can't recall off the top of my head.

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• Programmatically change height of the window more than the height of the screen in Mac OS X

  - by nezlooy

  Respected low-level users of Mac OS, please, help. I'm trying programmatically to change height of window of safari (or other window). I'm was trying used AppleScript and AXUIElementSetAttributeValue of Carbon, but none of these methods can't increase the window bigger than the height of the screen. But, the width changes without any problems. I guess I'd be starting with something like SetWindowPos with SWP_NOSENDCHANGING flag under Win32. Maybe, you can disable this functionality, which monitors the size of the window or completely shutdown the one who is responsible for it? Note that I want to do this programmatically from an external process - I'm not asking how to control just my own app's window size and position. Thanks.

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• Computer stopped working (ASUS P5GD1-VM)

  - by Gordonrjones

  My computer stopped working the other day. I came down and it was kind of chirping away. Then, when I restarted it, it only did the same thing. I unplugged everything not needed and it did nothing at all. I thought maybe the power supply wasn't working, but when I took the cover off the green light on the motherboard was on and the power supply is making a little buzzing sound. But nothing happens when I turn the computer on, other than the green light on the motherboard flickers a bit. I checked the memory in other computer and it works fine. I'd love to be able to fix this with as little cost as possible. Can someone here help? P4-640 (3.2E GHz, 800 FSB, L2:2MB, EM64T, HT)

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• tricks for speeding up tar while tarring up a huge directory of little files?

  - by Trevor Harrison

  I'm trying to tar up a directory that has about 3M tiny files in it. Tar is chugging along, but I'm thinking its going to take longer than I can wait. I'm wondering if telling tar to not store metadata (owner, group, perms) would reduce the churn on reading and re-reading this huge directory and maybe speed things up, and if there is a tar switch that does this. My initial perusal of the man page only gets me something like --no-xattrs, which looks like a start, but I was hoping someone had some specific knowledge.

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• Web Content Filtering for Windows Clients

  - by djoyce

  I'm working with a small business to solve a bunch of problems. One is their Windows 7 POS registers need to have web access restricted to only three remote support sites, but the back office machine needs an unfiltered connection. I'd like something I can install and configure on the few registers to block all but those few sites. In a perfect world this would restrict the normal register user, but the admin user would not be filtered. Free is best, if it works, but a small fee would be alright too. Microsoft's Family Safety filter is close, but requires a Windows Live account, which isn't ideal, but may be alright. Anyone use this in a small business environment? I'd prefer something easily managed at the local machines. K9 Web Protection is interesting and I'm going to look into it more. Are there other options? Seems like someone would have made something simple like this as an open source project, but maybe not.

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• Linux - Network Sharing a local NTFS usb drive

  - by Jonathan Rioux

  I have an external hard drive formated in NTFS which I would like to be able to access by the network. I want to make a network share out of it. I also have a Debian machine running in my house and I then got an idea. I want to plug in my external hard drive (usb) into my Debian machine, and make a windows share with it, maybe with Samba, so I will be able to access it from my Windows 7 laptop and see it as a network share. Additionally, how can I restrict specific folders of that network share, and allow only specific folders to specific users? For instance, I would like to give my girlfriend access to a folder of her name so she can put her files and so she wont be able to see the stuff in my folder...

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• TOP CPU usage for whole system

  - by heike

  I am using a machine that has using cat /proc/cpuinfo | grep processor | wc -l returning 8 I am trying to load the server using a load generator that I wrote, and capture the behaviour of TOP command for idle (as the software that is tested on server runs on ROOT). Doing the load as an increasing step function, I capture the idle state every second, and see the result. Strange thing is that when I increase the load every 1 minute, the idle state is infact increasing (??). This honestly does not make sense .. I thought with more load, the idle state will decrease, and the cpu usage will increase. Is there any reasonable explanation for this behaviour, maybe for the server utilization itself? Thanks for any feedback -- ok, no idea for the down vote. but I try to find this behaviour a lot, can not find any reasonable things to explain this ..

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• D-Link router WiFi and LAN segment

  - by StreetStrider

  I have D-Link 2650 router. Some wireless and wired clients connected to it. The problem is there is no interconnection between wireless and wired devices. For instance, when I start webserver on PC connected to wired LAN, WiFi devices cannot access it (other wired devices can). However all devices are in the same subnet: 192.168.1.x. How can I connect WiFi and LAN devices to one network? Or maybe what I should know first (any information with which I can proceed)?

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• full-screen browsing with IE10 on Windows 8

  - by Tom

  I have updated to Windows 8 and got Internet Explorer 10, but I don't get the full screen mode, is just like another desktop app. All links on the Windows Store Apps (Bing, News...) redirect to the old desktop and open my default browser. I have been looking on the IE10 options but I don't see this option. How can I solve this? Maybe this info help: Windows version: Windows 8 Pro 64 bits Installed Browsers: Firefox, Chrome (default), Opera, IE10 I have seem other people with the same version and is working

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• Install Windows with QEMU

  - by Radium

  I want to understand if it is possible to install Windows from Qemu to a physical HDD. I was trying to do that by doing something like this: qemu-system-x64 -m1024 -vnc :1 -hda /dev/sda -cdrom .../Windows.iso Installed successfully. But when i tried to boot normally got a blue screen telling me that a hardware change appeared so go away. I guess the problem is not because of QEMU-CPU emulation or smth, but because of HDD`s UID change which is used inside of Windows registry. Am i right? So if yes how to workaround this? Maybe i need to prepare Windows before the reboot? I have successfully installed FreeBSD via QEMU and thought with Windows it will go the same ...

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• Windows 7 Explorer - Activate mouse focus to be able to scroll in tree and file view?

  - by none

  I'd like to be able to scroll in the tree view without having to click in it. Is there a way to do this? I have once used a tool that generally gives focus to the window underneath the mouse cursor, but this caused some other glitches so I would like to achieve this without an extra tool. I also think that there are programs that embed the Windows Explorer and offer more features, including the behaviour I would like to have. But maybe a registry value change is all that is needed?

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• Using Dropbox API instead of a FTP server.

  - by Somebody still uses you MS-DOS

  This is a small aplication scenario. Usually, when you have to do some backups of source code/database on your server, you use a second ftp server, a cronjob to tar.gz your db dumps and source files, and send this file to your ftp server from your application server. Dropbox created an API to use it's infrastrucutre. Since they provide 2gb for free accounts, I thought about being able to upload to it instead of a ftp server. So, if you do some freelance work, you can create a free account for each client and use this approach, maybe encrypting the files you send. You even gain a revision for each sent file, like a revison control system, for free, from the last 30 days. What do you think of this approach? Is it possible? And, more importantly: what are the security risks involved? (That's why I'm asking this on serverfault, since this POV from sysadmins will be more accurate). Thanks!

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• full-screen browsing with IE10 on Windows 8

  - by Tom

  I have updated to Windows 8 and got Internet Explorer 10, but I don't get the full screen mode, is just like another desktop app. All links on the Windows Store Apps (Bing, News...) redirect to the old desktop and open my default browser (chrome). I have set IE as default browser but that not solve the problem. I have been looking on the IE10 options but I don't see this option. How can I solve this? Maybe this info help: Windows version: Windows 8 Pro 64 bits Installed Browsers: Firefox, Chrome (default), Opera, IE10 I have seem other people with the same version and is working Edit: Is possible to have IE10 by default for windows 8 apps links and Chrome for Desktop?

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