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• Detecting/Reactivating serial port that becomes inactive on Ubuntu Linux 10.10

  - by Tom

  I am using a usb2serial port to communicate with some old equipment (using my code built upon the boost asio library - I think my code is fine because it works almost all of the time). Every so often (maybe once every few days) the communication stops with my device with no error at all - the device just does not respond. I then restart my computer and everything is fine again. Does anyone know where I can start to analyse this problem? My serial port loads up fine (in /dev/ttyUSB0) and the boost library does not throw an error. The device just does not respond. If I restart the device no change - only when I restart my pc does it make a difference. I have also tried unplugging and replugging the usb connector. Does anyone know what gets cleared in the reboot (w.r.t the serial device) or what I can probe when the problem happens again (rather than just restarting with hope)

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• Hibernate a user account when switching to different account in Windows 7 Home Premium (64bit)

  - by Sukotto

  Is there any way to have Windows 7 hibernate Bob's account when switched to Mary's account and vice versa? I.e.: Bob is logged in Bob clicks Start shutdown switch user Bob's session is saved to disk Mary logs in Mary's session is restored as it was when Bob's turn started Both are heavy users (30+ chrome tabs open, multiple documents, multiple spreadsheets, music playing, etc) I would like to set up the system so that each gets the full use of the computer while still having all their open apps the way they left them. I suppose I could try setting up a VM for each, but I'd rather not add anything else to the mix here if I don't have to. This is Windows 7 Home Premium 64-bit running on a Lenovo G550 laptop

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• How to input 64-bit hex values in octave

  - by Chris Ashton

  I'm trying to use Octave as a programmer's calculator. I want to input a 64-bit pointer, but when I do apparently the 64-bit value gets silently truncated to 32-bit: octave:44> base_ptr=0x1010101020202020 base_ptr = 538976288 octave:45> uint64(base_ptr) ans = 538976288 octave:46> printf("%lx\n", base_ptr) 20202020 So it seems like it's truncated the input value to the low 32-bits. I would use scanf, but the docs say it should only be used internally. How can I input the full 64-bit value? Alternately, is there some awesome free programmer's calculator out there for Windows? (I know Windows calculator has a programmer's mode but I would like arbitrary variable support). I tried using my ti-89 but it also doesn't support 64-bit hex.

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• resize image without image quality reduction

  - by ali

  In web design , it's usually needed to design an image for example in Photoshop and then use multiple sizes of it. but I don't understand something here : When I resize the image (PNG or JPG) and reduce the dimensions of that in Photoshop , the image quality extremely gets reduced and the edges become messy while resizing the image in a simple software like Microsoft Paint gives a really better output! So what's the reason ? Is there a trick in Photoshop for image resizing which I've missed? Thanks for your help. UPDATE: I resize in this way : image image size , then enter new dimensions , all of checkboxes are checked , and have tried all of resample modes including Bicubic sharper

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• Why does a browser dialog come up when an xmlhttprequest sends the wrong / no auth?

  - by Kyle

  How come the major browsers all bring up a login dialog when an xmlhttprequest does auth wrong or doesn't send it? I mean isn't this poor UI? Now a days it seems like a lot of people try http auth in jQuery, because theoretically it is quite easy - until the user fails to enter the correct data and is presented with the browsers dialog, which gets in their way, and they might have no idea what to do with it or why it's there? I don't know too much about these low level browser specifications but can someone bring this up with the RFC or webkit/gecko developers? jQuery digest auth could be powerful and user friendly if this was fixed. ** It seems like apache could also fix the problem on their side by not sending the header, but whichever one is the most secure way of doing this would be nice.

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• Mail Reversing (Opposite of Forwarding)

  - by Duall

  I know mail can be forwarded, e.g. mail I receive will be sent to another account. However, can the reverse be true? That mail can be sent out and be delivered to another account before being sent to it's intended address. For instance: Guy #1 sends an e-mail to Guy #2 Guy #2 gets the e-mail, and passes it on to Guy #3 as well; mail forwarded. Guy #2 sends and e-mail to Guy #1 Guy #3 receives the e-mail on its way out. If this is possible, how would I go about this on an Exhange server 2007? And what would this be called anyways? It can't be mail reversing!

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• How do I keep second monitor (HDTV) from auto-disabling in XP when it is turned off?

  - by ThantiK

  I have a new 32" TV that I hooked up to the HDMI port on the back of my video card to use as a second monitor. I used an HDMI/DVI cable to hook it to the TV, and whenever I turn my TV off, XP disables the device tied to the TV so each time I want to use the TV as the monitor, I have to go into my display properties and enable it; it gets pretty annoying. How do I turn this 'feature' off? -- I have an NVidia card should it be specific to the nvidia control panel.

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• SQL Server 2005: reclaiming LOB space

  - by AndrewD

  Hello all, I've got an interesting table in one of my DBs that's confusing me. The table in question has a a few LOB type columns (two nvarchar(max) and a text) and it looks like there's some strange space issues going on. from this query: SELECT type_desc, SUM(total_pages) *8 [Size in kb] FROM sys.partitions p JOIN sys.allocation_units a ON p.partition_id = a.container_id WHERE p.object_id = OBJECT_ID('asyncoperationbase') GROUP BY type_desc; I get: type_desc Size in kb IN_ROW_DATA 27936 LOB_DATA 1198144 ROW_OVERFLOW_DATA 0 (there's just under 8000 rows in the table, each row has a data length of ~10k - not counting the LOB data) here's where it gets somewhat interesting: SELECT ( SUM(DATALENGTH(aob.WorkflowState)) + SUM(DATALENGTH(aob.[Message]))+ SUM(DATALENGTH(aob.[Data])) ) / 1024 FROM AsyncOperationBase aob returns: 76617 As I'm reading it - it looks like the ~75mb of LOB data is using over a gig of space to be stored - I would expect some overhead but not quit that much. Thanks, Andrew

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• Seeking automated toolchain for WAV cleanup and conversion to MP3 (currently using Audacity manually

  - by Andrew M. Greene

  I use Finale with the Garritan sounds to convert my music into WAV files; after that I manually load each one into Audacity and select all use the "normalize" effect (with default settings) manually select the silence at the beginning of the file and delete it manually select the silence at the end of the file and delete it finally export the whole thing as an MP3 (with specific tag data) This gets tedious, especially as I work on a ten-movement piece with six part-prominent rehearsal "tapes" to accompany the full-score rendition. And there are too many variations in what's going on for me to trust AutoHotKey for this one. Is there a way to script Audacity, or is there another toolchain that would do what I want? I'm running on a WindowsXP laptop with cygwin installed. Thanks!

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• Password expiration notice for Active Directory

  - by keithosu

  Are there any tools/apps/scripts out there that will do password expiry notification for Windows 2008 Active Directory credentials? This is needed for our web apps that use Active Directory for LDAP authentication. The problem is those apps do not notify you that your password is going to expire when you login. We have many offsite users who do not have machines bound to the AD. So there is no way to let them know to reset their password. I'd like the user to be notified 30,7 and 1 day before it expires. I'd also like our help desk to get an email for the expiring passwords for the week and recently expired passwords. I've looked at oldcmp.exe from link text and that gets me my reports but it does not do the automation that I'm looking for on the individual users.

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• How to Install PCRE Development Headers on Mac OSX

  - by martincarlin87

  I just upgraded my MacBook Pro to Mavericks and my local Ruby on Rails development environment isn't running straight off the bat, when I visit localhost I see It works! and remembered I needed to start Phusion Passenger, so when I run passenger start it checks all the requisites and fails when it gets to the PCRE Development Headers: * Checking for PCRE development headers... Found: no It tells me to go to http://www.pcre.org/ to download them so I downloaded 8.33 from here which went to my Downloads folder, so I unzipped it, cd'd to the folder and ran: ./configure make make install Then cd'd back to my rails app directory on my Desktop and re-ran passenger start but it's still the same. Tried a new Terminal window but that didn't make any difference. I must have done this before to get my dev environment working but can't seem to solve it this time. I also tried brew install pcre but it says Warning: pcre-8.33 already installed.

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• scp through ssh gateway connection

  - by zidarsk8

  so my network layou is something like this (I don't have enough reputation to post images so here's the link) http://i.imgur.com/OaD4i.png now Alice has access to SSH gateway (just gateway from now on) with: ssh [email protected] and the authorized keys file on the gateway looks like this #/home/Alice/.ssh/authorized_keys command="ssh -t alice@web" ssh-rsa ABCD...E== alice@somehost so when Alice trys to connect to the Gateway with her private key, she actually gets connected to the Web server (the gateway pc can make a connection to the web server with a passwordless private key, so that stays transparent). The question 1) How can I set this up so that Alice will be able to scp things to web server too? 2) I know this makes a separete connection, but is there any way for this to work as a normal ssh so that even something like -R12345:localhost:22 would work?

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• My profile won't load!

  - by blsub6

  I can get into my Windows Server 2008 R2 primary domain controller via remote desktop just fine. It's my boss who's got his profile messed up. When he tries to log in, he gets the message The User Profile service failed the logon. User profile cannot be loaded. I've looked for his profile everywhere and cannot find it to delete or fix it. System Properties Advanced User Profiles shows my profile, the Administrator profile and the Default Profile. HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList only shows my profile and the Administrator profile. Everything that I've found on the internets points me to those locations. Help a brotha out?

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• how to test lan network speed with ps3

  - by Damon

  I am having a heck of a time trying to get videos streaming to my PS3. I want to know if there is some way to test the speed between my PC and ps3 to see if that is the issue. For some reason when things get really slow between the ps3 and my computer (it's a wired connection through a switch), the wireless internet on completely different computer gets slow. I don't know what's causing what, but I don't know why there should be any correlation between internet speed on a wirelessly connected laptop and the LAN speed between a wired ps3 and computer.

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• Virtual PC - Display Issue with Ubuntu Server

  - by Christopher R

  Hi Everyone, I just did a clean install of Ubuntu Server 9.04 in Virtual PC on the Windows 7 RC, and it seems to be having a bit of an issue with the virtual machine's display adapter. I've tried setting a VGA flag in the GRUB configuration to no avail. This is a guess, but I think it has something to do with the color console mode that gets enabled by default at boot time. The system starts booting just fine (i.e. the console looks "normal" when I'm asked to enter an LVM passphrase, etc.), but then the display goes wonky after a few seconds and I end up with this. Typing commands in bash works just fine: it's not like the system is frozen or anything, I just can't see anything that I type. The console looks exactly the way it does in the image below.

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• redirect on a Domino HTTP server?

  - by oidsman

  Simple question but:- We have a server running Domino Http server on port 80. We have another apache server running on 8081. We want to set a DNS entry (say 'Things') to point to a page on the 8081 server. As I see it we need to do some kind of redirect on the Domino server to say that any traffic from hostname 'Things' gets a redirect to "http://server:8081/content/". So, in summary, if I type in "http://Things" on my browser I get redirected to "http://server:8081/content/" Does anyone know how to do this on the Domino Http server? Thanks in advance for your help!

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• Hardware upgrade: Windows 7 bluescreens, Vista loads

  - by Daniel Schaffer

  I just did a fairly significant hardware upgrade while keeping my hard disks. The old system was a dell Optiplex 745 with an Intel Core 2 duo, LGA 775. The new system is custom built, Intel i5 750. I know you're supposed to do a clean install with a hardware upgrade like this, but I'd had success in the past doing the stealth hardware upgrade like this, so I figured I'd give it a shot. Windows 7 Ultimate 64 bit gets through the loading screen and immediately blue screens and reboots. Windows Vista Home Premium 32-bit, which I have on an old hard drive from an AMD box (!!) loads up fine. I ran through the windows memory checker just to be sure, and my memory is fine. So, is the BSOD the result of some sort of protection mechanism specific to Windows 7? Is there any hope of salvaging that install?

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• Renaming Z drive in DOSBox

  - by Jay Kominek

  DOSBox makes a virtual drive, which it names Z:, for storing utility stuff on. Clearly they're trying to stay out of your way, so you can do whatever you want with the C: drive. Swell, I understand that. But I've got some old database accessing software I really, really want to run which assumes it lives on the Z drive. So I need to get DOSBox's Z called anything else. (C would be fine with me.) I've seen mentions that it is possible, but no actual indication of how to do it. Anything that gets the job done is appreciated.

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• RSync to WebDAV mounted volume very slow

  - by AlexC

  I have a mounted WebDAV store, which I am playing around with to try and put together my own pseudo-DropBox set up. However, it seems very slow to upload larger files (my bandwidth graph goes ok for a little bit, then just stops dead for long periods of time). Has anyone tried this? I'm wondering if the way it gets mounted makes rsync think it's a local drive or something and so may be chattier than it would be if it knew it was a mounted network drive? (I'm new to rsync so may be all wrong here!) I'm syncing using rsync -rv /source/directory/ /mounted/webdav/directory/ This is running using MacOS 10.6, and WebDAV is mounted using the native mounting mechanism.

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• Time between AWS Notifying of Scale Down and Terminating instance

  - by SteveEdson

  Here is the scenario, there are multiple EC2 instances behind a load balancer. When traffic dies down, the SCALE_DOWN policy is triggered from a CloudWatch alarm. What I would like, is for the instance that is going to be terminated, or a separate server altogether, to be able to run a quick script that will execute a few commands to ensure all data has been transferred. My initial question was going to be how can I send a notification when an instance is going to be terminated by an auto scale, SCALE_DOWN policy. But then I saw this question Amazon EC2 notifying the instance when the autoscale service terminates it. If the notification is sent, how much time is there before the instance actually gets terminated? Are there any parameters to specify this time? Would it be a better idea to notify an instance that it is no longer needed, and get the instance to terminate itself once it has finished running the final script? Or, am I making this into a bigger problem than it actually is, and theres a far simpler solution?

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• HTTP/1.1 503 Service Unavailable Exchange 2003 OWA

  - by toups

  Receiving HTTP/1.1 503 Service Unavailable when trying to access exchange web access. Server 2003 & Exchange 2003 Have tried: Deleting virtual directories and rebuilding them in IIS Restarting Dismounting & mounting the public folder store & mailbox store It's not AppPoolQueueLength Restarting all services (all proper ones are running) Making it use ssl or not (regular http) -- same thing for both Installing IIS & exchange 2003 on a new 2003 box as a new FE server, OWA on that gets same error. Not sure why it's getting a 503... was working without an issue and randomly is stuck at this no matter what; ll users can still successfully connect and use via outlook, only the web access is having issues. Any suggestions would be appreciated.

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• iproute2 premptive route creation, i think....

  - by Bryan Hunt

  Firstly: I know could do this the easy way with SSH but I want to learn how to route. I want to route packets back through the same tun0 interface from which they came into my system. I can do it for single routes. This works: sudo ip route add 74.52.23.120 metric 2 via 10.8.0.1 But i'd have to add them manually for each request that came down the pipe I've taken the blue pill and followed the http://lartc.org/howto/lartc.netfilter.html: Netfilter & iproute - marking packets tutorial But it's oriented towards redirecting OUTGOING packets based upon markers What I want is for a packet that comes in via tun0 not to be dropped which is what's happening right now, running scappy or suchlike to receive packets it doesn't seem to be receiving anything. Watching in wireshark I see the initial SYN packets coming in on the tun0 interface but that's as far as it gets without a static route as shown above. Am I nuts?

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• Strange email coming from/to my computer

  - by Micah

  I'm running smtp4dev on my machine to trap anything going in/out of my computer on port 25 for testing purposes. Every so often this email gets trapped and I have no idea what it's from. I have Microsoft Security Essentials running on my machine and it hasn't identified and viruses or anything so I'm not sure what's going on. Here's the content of the message: Received: from [125.180.72.4] by 173.162.7.130 SMTP id O2Ncv62Ghig1vR for <[email protected]>; Fri, 24 Jun 2011 20:36:15 +0200 Received: from [125.180.72.4] by 173.162.7.130 SMTP id O2Ncv62Ghig1vR for <[email protected]>; Fri, 24 Jun 2011 20:36:15 +0200 Message-ID: <[email protected]> From: "" <[email protected]> To: <[email protected]> Subject: BC_173.162.7.130 Date: Fri, 24 Jun 11 20:36:15 GMT MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01C2CC60.49F4EC70"

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• How do I delete or modify Default User's default printer?

  - by eleven81

  I have some computers that I set up a couple years ago by creating a user account, setting it up the way I wanted, and copying that user's directory over Default User's directory. Pretty simple stuff. One of the things that I did was to add a printer and set it as the default. Straightforward, or so I thought. Things have changed, and that printer has been removed and replaced with a different printer. I deleted the old printer's object and added the new one. Now every time a new user logs in, their profile gets copied from Default User, and they get the old printer as their default. This re-adds the old printer object to the system. Now every user can see the old printer's object again. I want to permanently delete Default User's default printer. How?

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• Redirect input from one terminal to another

  - by Niki Yoshiuchi

  I have sshed into a linux box and I'm using dvtm and bash (although I have also tried this with Gnu screen and bash). I have two terminals, current /dev/pts/29 and /dev/pts/130. I want to redirect the input from one to the other. From what I understand, in /dev/pts/130 I can type: cat </dev/pts/29 And then when I type in /dev/pts/29 the characters I type should show up in /dev/pts/130. However what ends up happening is that every other character I type gets redirected. For example, if I type "hello" I get this: /dev/pts/29 | /dev/pts/130 $ | $ cat </dev/pts/29 $ el | hlo This is really frustrating as I need to do this in order to redirect the io of a process running in gdb (I've tried both run /dev/pts/# and set inferior-tty /dev/pts/# and both resulted in the aforementioned behavior). Am I doing something wrong, or is this a bug in bash/screen/dvtm?

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