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• How can I store logs and meet compliance requirements for free?

  - by Martin

  I am trying to keep long-term logs of an app in such a way, that it could plausibly demonstrated to third parties/court that the application has processed certain data at a given time. The data can be represented in XML or text format. A simple gzipped log is not plausible, as I may have added or modified data afterwards, whereas an external logging service would be an overkill. Cost is an issue, we are not dealing with financial data or so, but rather some simple user generated content, where some malicious users tried to blame the operator in the past when things escalated and went to court. My question: Is there some kind of signing software for Linux that signs each element of a log in such a way, that it can be easily shown that no element can be added or modified afterwards? Plug-Ins into some free Splunk Alternatives would be fine too. Ideally the software I am looking for should be under a GPL or similar license. I could probably achive something like this by using PGP/GPG sgning functions and including the previous elements signituares within the following element, but I would prefer to use some program where you do not have to argue about the validity of your own code. Note to mods: I am not asking this question on Stackoverflow, because I am not looking for writing own code for reasons described above. I think this question rather fits into serverfault than superuser, as server-side logging software is discussed rather here than on superuser.

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• Ubuntu server: Delete first folder in directory

  - by Martin

  How can I grab the first subfolder in a directory and delete it? I found a script to monitor the free diskspace. It sends an alert email if space runs low, but I want to also delete some unneeded stuff. I have a backup folder where I save daily and monthly backups. I want to delete the first folder since this always the oldest, but I don't know the name of the oldest backup. My folders without Jan-May and Dec: 06-01 07-01 08-01 09-01 10-01 11-01 Friday Monday Saturday Sunday Thursday Tuesday Wednesday How can I delete the first folder "06-01" without knowing its name?

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• How to step down voltage from 208V to 110V

  - by Eric Dennis

  I have some racks that will be fed by 208V/20A circuits. These circuits will be conditioned and battery-backed by the facility in which these racks will live. 99% of the devices in the rack will be able to support 208V input, so I plan to use these PDUs. However, there may be one or two odd devices that will need 110V input. I know that I can use a step-down transformer to provide 110V for these devices, but that seems like overkill for such a small number of devices, plus I don't want to pay extra for the UPS functionality since my power will already be battery-backed. Any suggestions for something I can use for these one-off 110V devices?

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• Is it possible to change error messages for users connecting to network printers?

  - by eric.s

  We are cleaning up our print server (Win XP). To test that printers are no longer really there we have set up some tests. These tests have left us with 176 questionable printers. We have now set Print access to Everyone to Deny. Testing shows this gives the user a 5 Access is denied. message. We would like to change this message for the user, so when they call our workstudy's who answer the phone do not interpret this as a computer rights management issue and can route the call properly. Is it possible? Is this error number system wide, or just for printing errors? If it's not a system wide error where might the string for this error be?

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• Alternative Bluetooth Stacks for Windows 7 64bit

  - by Martin

  I have a notebook with an inbuilt Broadcom BCM2046 bluetooth adapter and several bluetooth HID-devices (mice, keyboards etc.) The operating system is Windows 7 64 bit Professional. The HID-devices all work perfectly with other computers, but on the system mentionend above, problems with some power-saving features inside the HID-devices occur (see eg. Amazon reviews for Microsoft Mobile Keyboard 6000 not waking up). I have tried the bluetooth drivers supplied by Windows update and the latest Broadcom drivers directly from the Broadcom updater software. The problems persist (I can rule out any further configuration issues or alternative device drivers, I have tried every possibility). I have tried a trial version of the BlueSoleil Bluetooth stack and it solved the wake-up problem. However the BlueSoleil stack causes some other problems, is relatively expensive and I would prefer not to use it. My question: are there any other alternative bluetooth stacks availible for Windows 7 64bit? To my knowledge there used to be Toshiba Bluetooth stack for non-Toshiba hardware, but the older versions I have found on the internet do not install, they do not seem to recognize the bluetooth hardware when installing the driver.

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• CPU sometimes hangs at 50% maximum on Windows 8

  - by Martin.

  Recently I installed Windows 8 on my HP ProBook 6450b and it appears I've got problems when using more than one program at once. Sometimes, when I run multiple programs at once, CPU hangs at 49% and never goes up. I suspect it has something to do with CPU throttling, because sometimes it just goes over 49%. I've got my notebook connected to charger and my plan is set to "Active cooling". The weird thing is that this happens only occasionally. I found nothing in my BIOS that could change this kind of things.

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• Quicktime won't install on Windows 7 Ultimate 64bit

  - by Martin

  Hi! I am trying to install quicktime (actually just need iTunes..but then iTunes needs qt), but it fails. There seems to be a problem with the folder C:\Program Files(x86)\QuickTime\ - Quick Time wants to write the file QTTask.exe, but complains that it does not have permission to do so. Same thing happens with \PropertyPanels\PanelHelperBase.qpa I have tried deleting all Apple programs (in the order suggested in the support forum) and also tried to delete the temp folder. That did not work. I have tried to manually adjust the permissions of the QuickTime folder - no effect. I have run the installation file with admin rights and with different compatibility modes to no effect. I consider myself to be an experienced user - able to solve most problems - but now I am stuck. I need some input / fresh ideas on how to tackle the problem. This is very annoying as I cannot sync iPhone/iPad/iPod while iTunes is not running - due to the stupid (sorry) idea of only have your device linked to one library. Please help. Thanks!

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• Shell Script, iterating over a folder

  - by Martin

  I have very basic shell scripting knowledge. I have photos under original folder on many different folder like this folder + folder1 + original + folder2 + original + folder3 + original + folder4 + original Using mogrify I'm trying to create thumbs under a thumb folder following a structure to this. folder + folder1 + original + thumb + folder2 + original + thumb + folder3 + original + thumb + folder4 + original + thumb I'm a little lost in how to write the shell script that may iterate through it. I'm ok giving mogrify its settings but I don't complete understand how to tell the script to go iterate each folder to run the mogrify command.

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• PRNG test suite: bitstream and stream length

  - by Martin Trigaux

  On the NIST website, there is a tool called sts (Statistical Test Suite) that allow us to rest the validity of a pseudo-random number generator based on a stream of bits in input. When running the program, there is two variables I am not sure to understand : the stream length and number of bitstream. Is the stream length the size of the file ? The number of bit inside ? The size of a bitstream ? Are the bitstreams subset of the whole file ? Chosen how ? Let say I have a text file containing 1,000,000 bits in ascii. What should be my arguments ? You can find the user manual here if needed (I didn't find explanation about what are these variables in it). Thank you

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• Git autocomplete stopped working in Oh My ZSH

  - by Eric

  Help! My git autocomplete stopped working in Oh My ZSH. It was working, but now it is now. I'm not sure what changed, so I'm hoping someone can help me track down the problem. I've tried uninstalling and reinstalling but no luck, Which plugins would you like to load? (plugins can be found in ~/.oh-my-zsh/plugins/*) # Custom plugins may be added to ~/.oh-my-zsh/custom/plugins/ # Example format: plugins=(rails git textmate ruby lighthouse) plugins=(git)

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• Ethernet 802.1x client -> WiFi AP on a Raspberry Pi?

  - by Martin Janiczek

  I have an Ethernet connection that requires 802.1x authentication (TTLS, MSCHAPv2, name+password). My goal is to connect that to something that would then act as an WiFi AP, so I can use the connection on more devices (iPhone, notebook, etc.) Would it be possible/good idea to use Raspberry Pi for this purpose? Or are there better-suited devices to do this? EDIT: found some alternatives but because of low rep can't post more than two links... OpenWRT + wpa_supplicant guide Carambola - works with OpenWRT (but probably not standalone?) Hornet-UB - works with OpenWRT Asus RT-N10+ + OpenWRT how-to EDIT 2: probably going to try TP-LINK TL-WR740N. It's a classic router, but can be flashed with OpenWRT, and the price beats everything else I've seen.

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• How do I recover files from a corrupt VDI file?

  - by Eric P

  Is it possible to repair a corrupt VDI file? The OS on the VDI (XP) doesn't boot at all, it just hangs at a black screen. I was getting file errors before on its last boot, but now its not working at all. Sector viewer shows 'Invalid partition table Error loading operating system Missing operating system'. I tried mounting the file from the host OS, but it just says that the drive isn't formatted. I don't need to be able to run the VDI, but I do need some files that are on it. Is there any way to recover files from the corrupt VDI file?

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• Free or very Cheap VPN server software with high concurrent users count

  - by Martin KS

  I'm hoping to implement a VPN whereby about 200 concurrent users can log in to briefly access my network. I had a look at OpenVPN and this seemed excellent, but was hoping that there would be a less costly option on a per-concurrent-user basis. I've no need for particularly strong security, and my only other requirement is that I would need to be able to add users in bulk via csv or similar. Does anyone have any suggestions?

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• How to get Apache web server to run on other computers?

  - by Eric

  I have been using Apache Web Server for a while now and one thing I have noticed is that outside of my computer I can not access it. I use my Apache server for PHP development on my computer, but I would like to access stuff I have made outside of my computer. I am on a linksys router network. I usually run it of http://localhost/ or http://127.0.0.1/. I IPCONFIGED my computer and got 192.168.1.105 so I went there with my browser and got the page just fine. I tried doing this on another computer on the same network but it didn't work. How do I fix this? Sorry about the bad wording. I am in ah hurry Information you might need to know: Server: Apache 2.2 Operating System: Windows 7 ULTIMATE

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• Directly printing to remote CUPS/IPP server on Snow Leopard

  - by Martin v. Löwis

  I need to use Kerberos authentication when printing from my OSX machine, however, the machine itself does not have a service account in active directory, so the KDC will not issue a delegation ticket for the local CUPS installation. I think printing could work if the printing framework would directly print to the network CUPS server (or even to the Windows print server), bypassing the local CUPS. Is it possible to setup printing so that it directly accesses the remote print server? (asking for a service ticket for that server would succeed)

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• How to charge an iPhone on a Windows PC without Installaing iTunes

  - by Martin Hollingsworth

  I want to be able to charge my iPhone on my work computer, which is running Windows Server 2008 SP1 64-Bit. When I plug the iPhone in with the USB cable, it will not charge. Windows attempts to locate a driver for the device but only comes up with a generic Camera device and even if I allow that to be installed, the iPhone still does not charge. I have checked the computer's BIOS settings and did not find anything relating to power on the USB devices. I also tried this on ports at the back of the computer in addition to those on the front. The PC is a Dell Optiplex 780. As far as I can tell USB devices do not charge unless Windows has installed an appropriate driver. Since it is a work computer I do not want to install iTunes which does include a driver. I have a workaround that I will post as an answer for reference.

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• How can I transfer a logged in user's login data from one server to another?

  - by Martin

  I have one server "A" where users can login. Login is verified by an LDAP server "L". I have a different server "B" were users can log in, too. Login is verified by the same LDAP server as before. Both servers are standard web servers with PHP. My goal is: If a user is logged in to server "A", and if he clicks a link to log in to server "B", the user should automatically be logged in without re-entering username and password. What is a good and secure way to achieve this? I can't submit username and crypted password to server "B". I can't use the PHP session of server "A", because it does not exit on "B". Cookies won't work either. I think that there is a way, but I just can't see it. Any help is very much appreciated.

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• Insert Hyperlink via VBA

  - by Martin

  I have a Word VBA macro that loops through a directory and writes down the file path of files selected for some criteria into a new Word document. Works well as plain text (as part of a loop): wdDocResults.Content.InsertAfter objFile.Path & Chr(13) However, I'd like them to be hyperlinks. The following works as single macro, but when called from within another script, it does nothing at all (no matter if path is provided as variable or string, or as H:... or \\MyServernameAsNetDrive...): ActiveDocument.Hyperlinks.Add Anchor:=Selection.Range, Address:= objFile.Path, _ SubAddress:="", ScreenTip:="", TextToDisplay:=objFile.Path If try to select the current line in order to make sure something is selected at the right place -- error: out of memory": wrdDocResults.Content.InsertAfter objFil.Path Selection.Expand wdLine ActiveDocument.Hyperlinks.Add Anchor:=Selection.Range, Address:= objFile.Path, _ SubAddress:="", ScreenTip:="", TextToDisplay:=objFile.Path I also tried inserting a string resembling the Hyperlink field code ({ Hyperlink "..." }, which is of course not recognized... Any help is appreciated... Thanks in advance!

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• Is it possible for the Subversion Apache module to serve html files with an html content-type without using the svn:mime-type property?

  - by Martin Pain

  I am aware that if you set the svn:mime-type Subversion property on a .html file to text/html then when viewing the file in a browser through the Subversion module in Apache httpd it will be served with a Content-Type: text/html header, enabling the browser to render it as HTML rather than plain text. However, I am looking for a way to do this without using the svn:mime-type property. I'm aware that you can configure your svn client to automatically add the property - this is not what I want, as I do not want to ensure all users have these settings. I'm also aware that I could create a pre-commit hook that rejects the commit if the properties are not set, in order to force users to set the property - I might fall back to that, but I'm looking for something less intrusive. I'm also aware that I could use a post-commit hook to add the properties automatically on the server-side. I'd rather not do that (as users then have to update immediately after their commit, and it's not trivial to write) - I'm looking for a better alternative. Perhaps something with rewrite rules in the Apache server?

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• Load Balancing Linux Web Services and Change Config Without Restart

  - by Eric J.

  What options are available to load balance web service traffic on Linux with the ability to add or remove servers from the server pool without restarting the load balancer? This post: http://serverfault.com/questions/71437/mod-proxy-change-without-restart looks like a very promising way to switch between two servers, but I don't know enough about mod_proxy and mod_rewrite to understand how/if I can use an external file to specify the BalancerMember entries for a section. Are there other open source load balancers that support reconfiguration without restart?

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• How can I delete current session in Chrome?

  - by Eric

  I'm using Google Chrome and want to delete the current session data on the fly. I can do this on Firefox with the web developer extension, but Chrome doesn't seem to have the same option in their webdev extension. So how can I do this? I realize that session data is stored on the server side and tracked in the browser with cookies. So really, I think what I want to do is delete cookies that are set to live for the session lifetime. Is there a way to do THAT in Chrome? "Delete browsing data" lets me delete all cookies from within a certain time period (for example, the last hour), but that could delete OTHER cookies on the site that I don't want to erase. I just want to delete the cookie being used to track my current session. Thanks y'all...

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• Can I make Thunderbird load different email accounts one after the other instead of all at the same

  - by Martin

  I use Thunderbird 3 on Vista. I use it for 3 POP accounts. When I start work in the morning, all three accounts are checked at the same time, and all emails are being loaded simultaneously. I think Thunderbird is quite slow in general, and this behaviour makes it even worse. At least it makes me feel so. Can I tell Thunderbird to check the accounts and load the emails one after the other?

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• Windows 7 caches FTP credentials?

  - by Martin Booka Weser

  On my remote maschine i have an iis 7.5 (win server 2008) and set up an ftp site with iis manager authentication. I then did active directory user isolation and isolated my users to physical folders according to their names. So far, so good. I can access with ftp cliens from everywhere with different test accounts that i previously set up in the iis manager auth. Every user connects to its own folder. When i now tested with windows 7 as a client i did the following. Explorer - computer - right click - add network address - the ip of my remote maschine - user1 - password1 Perfect - it works. I now want to connect with user2. So I deleted this network address and set up a new connection, but with user2 (or even anonymous) instead. Now the strange thing: Windows doesn't even ask me for a password again. It just connects me to the folder of the user1. I already disabled ftp caching in the IIS and i disabled the user1 account in IIS manager authentication! Still, if i set up a network connection with this windows 7 it connects to the folder user1 . No matter which username i use (anonymous, administrator, user2,...). And if i connect with other ftp clients or other computers it all works perfectly. So I assume that this one windows somehow caches the credentials... But then, why does the IIS still accepts this credentials even if i disabled this user1 account??? Thanks.

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• Best technique for reusing a Windows system image across configurations

  - by Martin Wiboe

  We are a small company that provides solutions for ventilation systems. Part of the solution is a "controller" which communicates with the ventilation equipment. These controllers are simply Dell computers that come with our Windows 7 system image on them and sometimes some special hardware. We typically do a batch of 10 controllers at a time. We have been using Norton Ghost to apply the system image, but this process breaks because Dell changes the system configuration often, and our Windows image now does not contain the correct drivers. This is especially a problem when they change the RAID controller. To improve this, I see 2 options: use some kind of virtualization and install a hypervisor on each PC. This would solve the driver problem, but probably cause trouble with our special hardware. use some method of adding the proper drivers to our Windows image in offline mode. I haven't got much experience in either of these approaches. How would you solve our problem?

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• Remote Desktop Software - TeamViewer comparison?

  - by Martin

  Preliminary Note: After reading what I wrote below, I would like to stress that this ain't a TeamViewer ad. It's just that all other tools that I checkked online seem to miss one feature or the other. :-) OK, so I'm currently trying to get a picture of available solutions for remote desktop software. I have found (through personal usage) that TeamViewer pretty much ticks all boxes that I personally would want from any remoting tool. (Specifically it's setup is amazingly trivial.) It supports a wide range of platforms and it's even free for private use, so I'm really quite OK with it. I would be interested if anyone knows of other tools that ticks as many boxes as TeamViewer seems to do.

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