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• Screen flicker -> Severe System Slowdown?

  - by Adam Robinson

  I'm using a Dell D830 laptop, and over the last few weeks it's been developing a very irritating screen flicker problem that leads to the system slowing down almost to the point of unusability. At seemingly random times (no commonality between how long the system has been running, what I was doing, what applications were open, etc.) my screen (I use two external LCD's with the laptop closed in a dock) flickers for a moment, then the system becomes incredibly slow. The screen redraws painfully slowly--almost like what you might expect to see with generic graphics drivers installed--and the entire system is maddeningly unresponsive. The only thing that seems to be able to correct the issue is a restart. I've checked the event logs and nothing out of the ordinary is there, and definitely nothing that's common to all of the events. I'm running XP Pro SP2. Any ideas?

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• On Windows, what filename extensions denote an executable?

  - by Ken

  On Windows, *.exe, *.bat, *.cmd, and *.com all represent programs or shell scripts that can be run, simply by double-clicking them. Are there any other filename extensions that indicate a file is executable? EDIT: When I jump into a new project (or back into an old project!), one of the common things I want to do when looking around is to find out what tools there are. On Unix (which I've used for decades), there's an execute bit, so this is as simple as: find . -executable -type f I figured that on Windows, which seems to have a much more complex mechanism for "is this executable (and how do I execute it)", there would be a relatively small number of file name extensions which would serve roughly the same purpose. For my current project, *.exe *.bat *.cmd is almost certainly sufficient, but I figured I'd ask if there was an authoritative list.

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• Comparing zip/compression utilities

  - by Grant Palin

  I've used WinZip, WinRar, and 7zip for packaging and compression. I know the first two are payware, and the last is open source. Despite that, they all seem to serve the same overall purpose. Are there any other distinguishing characteristics that make any of the options stand out? I'm not really looking for a "best" package, but would like to know of noteworthy differences between the common tools. For what it's worth, I do seem to like WinRar. Not sure why, but there it is. If it matters, I'm using Windows 7.

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• Clicking hyperlinks in Email messages becomes painfully slow

  - by Joel Spolsky

  Running Windows 7 (RC, 64 bit). Suddenly, today, after months without a problem, clicking on links has become extremely slow. I've noticed this in two places. (1) clicking hyperlinks in Outlook email messages, which launches Firefox, takes around a minute. Launching Firefox by itself is instantaneous - I have an SSD drive and a very fast CPU. (2) opening Word documents attached to Outlook email messages also takes a surprisingly long time. The only thing these two might have in common is that they use the DDE mechanism, if I'm not mistaken, to send a DDE open command to the application. Under Windows XP this problem could sometimes be fixed by unchecking the "Use DDE" checkbox in the file type mapping, however, I can't find any equivalent under Windows 7. See here for someone else having what I believe is the same problem. See here for more evidence that it's DDE being super-super-slow.

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• basic device that can connect to internet

  - by Hellnar

  Hello, I am looking for a cheap solution to my problem: I need to find either an already existing common device (that is used in restaurants, bars clubs) or a cheap new device that I will distribute to those places, which can connect to internet (via the already existing ethernet or wireless based internet) and do HTTP request/receive response and retrieve information ? (For instance can a POS device connect to internet?) For a project, I need to do identity validation on several restaurants and bars and not all of them have computers. So I will be giving "cheap and easy to use devices" and non-IT personal can use it to do http request to my server and get response. All I can think of is Cell phones and SMS.

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• Redirect To Domain Before SSL Is Read

  - by Devin Dixon

  I had to switch servers and I want to redirect all SSL urls to the non-ssl site. The problem I am running into is the https site still throws invalid certificate error even through apache has the redirect implemented. <VirtualHost *:443> ServerAdmin [email protected] DocumentRoot /data/sites/www.example.com/main/ RewriteEngine on Redirect 301 / http://www.example.com SSLEngine on SSLCertificateFile /etc/httpd/ssl/www.examplecom/ssl-cert-snakeoil.pem SSLCertificateKeyFile /etc/httpd/ssl/www.example.com/ssl-cert-snakeoil.key ServerName www.example.com ErrorLog "logs/example.com-error_log" CustomLog "logs/example.com-access_log" common </VirtualHost> My question is, how can I do a redirect and avoid the invalid ssl certifcation error in the browser?

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• Is there any way to limit my Internet connection to a per program basis?

  - by Igoru

  My Linux connection is REALLY free. I live in Brazil, so where I live I can only have 1 Mbit/s. Yes I know it's sad, but it's not the point. Everytime I'm updating my Ubuntu 9.04 or downloading something, it does eat all my bandwidth. Like, while update-manager is downloading the packages, I can see by netspeed applet in my panel that the incoming traffic goes to 110 kB/s. And then, my Emesene suddenly goes disconnected, and I can't navigate. As you can imagine, I can't use my Internet connection again until the packages are all downloaded or I cancel the update in the middle. As I said, same thing happens when I'm dowloading something, but less intrusive and immediate. The question is: is there any way to limit that APT/downloads traffic to some way I can still use my other Internet services, or to reserve some bandwidth for common navigation tasks (like we have on Windows, but I forgot this thing's name, it's like "something packages".

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• Events 1030 and 1006 in Windows 2003

  - by jab

  I've got a computer running Windows 2003 R2 Standard Edition Service Pack 2 and periodically (every 5 minutes) the systems generates 2 errors that can be seen in the event viewer. The codes of the events are 1030, 1006 that seems to be related to group policies... I don´t know if these events are realted to the perfomance of the system but anyway i would like to fix them. I've googled around and seems to be a common problem but i haven't found a solution for these events. Do you know how can be fix it? Thanks in advance

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• Can't get MultiViews to work on Apache 2.2 - negotiation problem

  - by Doe

  Hi I can't get MultiViews to set up properly on my Apache 2.2. When I go to filtered.com/something, I expect it to execute something.pl but it doesn't. I get a Error 404 page. In my error logs it says: " [Fri Apr 16 13:04:20 2010] [error] [client 78.85.152.94] Negotiation: discovere\ d file(s) matching request: /var/www/html/filtered.net/translate-english (None could be negotiated)., referer: http://filtered.net/" Would anyone kindly help me so that MultiViews is properly installed on my server? ServerAdmin [email protected] ServerAlias *.filtered.net DocumentRoot /var/www/html/filtered.net ServerName filtered.net ErrorLog logs/filtered.net-error_log CustomLog logs/filtered.net-access_log common Options ExecCGI +Indexes +IncludesNoExec +MultiViews +ExecCGI AllowOverride None Order allow,deny Allow from all <IfModule mod_dir.c> DirectoryIndex index.php index.html index.pl </IfModule> </Directory> </VirtualHost>

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• Caching Reverse-Proxy ISP Host for a Low-Bandwidth Server

  - by Casey

  I am building a webcam w/ HTTP server that will be running from a low-bandwith connection. The content on the site will be changing every 5 to 10 minutes. Instead of serving files directly from this connection, are there hosting companies that can act as a reverse proxy for my site? Therefore, if nobody is using the site, the local internet connection remains idle. And if I receive 1000 hits all at the same time, only one HTTP GET is required, and the hosting company (on a fat pipe) continues serving the other 999 requests? This doesn't sound like a very common usage model, but I feel like this would be the optimal solution to my situation.

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• Font oddity - is this a bug?

  - by avenas8808

  I have Windows 7 Ultimate Home Edition, installed some new fonts recently (I do graphic design etc.) and have noticed some of them don't display in Windows/Fonts via the control panel, Appearance and Personalization. And when they do occur they always have FONTNAME_0.ttf (is this always common for TTF files?). I have 1306 fonts according to FontFrenzy but it doesn't show all of them via the Appearance and Personalization control panel. Also, in C:\Windows\Fonts, the fonts only show as the file name, e.g. arial.ttf (but for some odd reason arial_0.ttf appears, same for other fonts). Why is this, and anyone else had this problem before!

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• needs updated glibc package version 3.4.15 or later for RHEL6

  - by Tejas

  I want to upgrade my current running applications to latest version. But due to some package issue i am unable to install them. I get common error in that: /usr/lib64/libstdc++.so.6: version 'GLIBCXX_3.4.15' not found. When i tried to update glibc package i get following output: [root@agastya ~]# yum install glibc Loaded plugins: refresh-packagekit, rhnplugin epel/metalink | 3.8 kB 00:00 epel | 4.3 kB 00:00 epel/primary_db | 5.0 MB 01:33 epel-testing/metalink | 3.8 kB 00:00 epel-testing | 4.3 kB 00:00 epel-testing/primary_db | 295 kB 00:03 rhel-x86_64-server-6 | 1.8 kB 00:00 rhel-x86_64-server-6/primary | 11 MB 02:02 rhel-x86_64-server-6 8816/8816 Setting up Install Process Package glibc-2.12-1.80.el6_3.6.x86_64 already installed and latest version Nothing to do [root@agastya ~]# Should i need to add some more repositories? If yes, how?

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• Why is Internet access and Wi-Fi always so terrible at large tech conferences?

  - by Joel Spolsky

  Every tech conference I've ever been to, and I've been to a lot, has had absolutely abysmal Wi-Fi and Internet access. Sometimes it's the DHCP server running out of addresses. Sometimes the backhaul is clearly inadequate. Sometimes there's one router for a ballroom with 3000 people. But it's always SOMETHING. It never works. What are some of the best practices for conference organizers? What questions should they ask the conference venue or ISP to know, in advance, if the Wi-Fi is going to work? What are the most common causes of crappy Wi-Fi at conferences? Are they avoidable, or is Wi-Fi simply not an adequate technology for large conferences?

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• Installing Oracle Client 11.1.0.7 on Windows Server 2008 64-bit. What does "Install Location" and "S

  - by Anders

  I am trying to install Oracle Client 11.1.0.7 on a Windows Server 2008 64-bit. To some this might not be rocket science but I can't understand what the options under the install screen "Specify Home Details" mean. The defaults given suggest that I use Oracle Base and install software under my own account name. It also suggests that each user should have a separate Oracle Base. This seems counter intuitive to me. I am doing a server install after all. All I want to use the installation for is to connect to an Oracle Database from Reporting Services. Can I safely ignore this and just accept the defaults? What are the implications if I change the location to a common directory?

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• Ways for managing the installation and configuration of various software applications and settings i

  - by EmpireJones

  What are some ways for managing the installation and configuration of various software applications and settings in group of linux development and server computers? Is a set of basic scripts a good means of attack? I was thinking about just having a ton of scripts, such as: setup_dev_env [install|uninstall|reinstall] setup_nfs [...] setup_nfs_share [...] setup_http [...] setup_memcache_node [...] Is there any better method? It would be nice to be able to "upgrade" an installation script too, for example, to change common development settings.

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• Exchange enrypted messages with a single recipient [portable]

  - by Andy

  I need to exchange encrypted messages with another party. These would be in the form of email like communication (not instant chat). The solution needs to be portable (USB stick). I've tried "Portable Thunderbird/Enigmail/Gnupg/Hotmail account" but it's just impossible to setup portable, countless meaningless error messages. Anyway, I would prefer something more straightforward. Notes: We won't know each others IP addresses. Our computers will often be switched off. Encryption would ideally be using a common password. Is there a solution to this?

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• Adding FTP Users via Simple Control Panel

  - by Aristotle

  I just got setup with CentOS yesterday through GoDaddy, and today I'm trying to get into the server and start setting up some of my projects. I'm able to get in through PuTTY just fine, but I'm not able to connect through FTP with the same (root) account. I'm using Simple Control Panel, and have ensured that "Enable Server" is checked beneathSystem Configuration > FTP. Further, I've checked, and double checked that my root password is correct when providing the FTP details. Is there some other common setting I'm missing here that will prevent me from getting connected to the server to begin transfering files?

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• What tools can be used to monitor a web application? Beyond "doesn't 404"

  - by Freiheit

  I have an internal web application that has recently gone through a major version upgrade. I would like to monitor this application over the weekend and look for 'soft' errors. I will still need to spot check things by hand, but there are some common failure patterns that I think I can automate. Examples include data with bad formatting, blank rows in tables (indicates missing non-critical data), patterns for identifiers ("TEST" means one of my devs left a testing feed on), etc. I think there are applications out there that can be scripted to do things like: 1. log in 2. Go to $URL 3. select 3rd link in $LIST or $PATTERN 4. Check HTML from that link for $PATTERNS 5. Email report Are these goals sane? What applications/tools can help with this?

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• Rewriting to address on postfix local aliases

  - by Wade Williams

  I was running into the common problem that mail for "root" on my system was having $mydomain appended, and because $mydomain is not in $mydestination, the mail was being sent to our central mail server as "root@domain." I cannot add $mydomain to $mydestination, because if I understand it correctly, that would mean all mail addressed to $mydomain would be looked up locally, and if an alias does not exist, delivery would fail. So, I followed these instructions: Delivering some, but not all accounts locally which seems to have resolved the problem. Mail for "root" is now expanded according to /etc/aliases and delivered to the non-local address I desire. The one oddity however is that the "To:" address still reads "root@domain." Is there any way I can get the "To" address to be the one that the alias directed its delivery? So for example, if my alias says that mail for "root" should go to "hostname-admin@domain" is there any way the "To" address can be rewritten as "hostname-admin@domain?" Currently it still shows as "root@domain."

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• Run a local command after closing an SSH connection?

  - by James B

  I've set up my zsh to update the XTerm title whenever I change directories. It's neat! Unfortunately I have one common problem, which is this: % cd foo; # title changes to "host1:~/foo" % ssh host2; # title changes to "host2:~" % pwd /home/user/foo # title is still "host2:~" I need to run some command anytime an ssh connection terminates, either chpwd, or cd ., or something similar. I don't think I can use an alias, because I'd need something like alias ssh=ssh $*; cd . but AFAICT you can't pick where the arguments go in an alias.

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• Need to upgrade DDR2 RAM on HP Desktop

  - by jds

  I have this HP Pavilion Desktop. As you can see, that page says the memory speed supported is PC2-4200. It currently has a 512 MB stick - CPU-Z Screenshots: hxxp://i41.tinypic.com/j5clj6.jpg and hxxp://i39.tinypic.com/20tldlc.jpg However, a crucial.com scan gives a slightly different report - hxxp://crucial.com/systemscanner/viewscanbyid.aspx?id=5718CFE831D926C3 It says the system can support PC2-5300 memory. So my question is which one should I trust? I want to upgrade the computer's ram to 2 GB (the maximum supported), because XP Media Center is giving me problems and I will install Windows 7 on this. PC2-6400 is the most common DDR2 memory I have been able to find here in the market. Will it cause any problems if I install 2 × 1 GB PC2-6400 DDR2 memory sticks (in dual channel) in this computer, (afaik, it will just run at the lower speed of 533 MHz, or whatever the motherboard supports), or do I absolutely need to get PC2-4200 sticks?

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• Using Gentoo's `ebegin`, `eend` etc under Ubuntu

  - by Marcus Downing

  We're quite fond of the style of the ebegin, eend, eerror, eindent etc commands used by Portage and other tools on Gentoo. The green-yellow-red bullets and standard layout make for very quick spotting of errors, on what would otherwise be very grey command line output. #!/bin/sh source /etc/init.d/functions.sh ebegin "Copying data" rsync .... eend $? Producing output similar to: * Copying data... [ OK ] As a result we're using these commands in some of our common shell scripts, which is a problem for the people using Ubuntu and other linuxes. (linuces? linuxen? linucae? other distros) On Gentoo these functions are provided by OpenRC, and imported with functions.sh file (whose exact position seems to vary slightly). But is there a simple way of getting these commands on Ubuntu? In theory we could replace them all with dull echos, but we'd rather not?

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• install red5 demos via installer or within war file manually

  - by dursunturan

  I'm using Ubuntu 10.10 and installed the red5-server package. I've also downloaded oflaDemo.war file from that address. First I tried to install the oflaDemo via installer, but I couldnt reach the goal. I see the .war file under the /tmp directory, I got stuck with this message: "This may take a couple minutes, please wait". After that, I put the downloaded war file into the /webapps directory and wait 10 minutes as mentioned in red5-common.xml. Unfortunately, nothing changed ... So I decided to extract war file manually. I did this: jar -xvf oflaDemo.war Ok, I see all of the unzipped content under the webapps directory, but how can I preview the demo via a web browser? I really need to make live stream via Red5. Please help me.

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• How to install latest version of imagick on centos 5.8 64bit using bash

  - by user57221

  How can I download and install latest version of imagick on centos 5.8 64bit using bash for php 5.4. >yum info php Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.ellogroup.com * epel: mirror01.th.ifl.net * extras: mirror.ellogroup.com * updates: mirror.ellogroup.com Installed Packages Name : php Arch : x86_64 Version : 5.4.3 Release : 1.el5.remi Size : 8.8 M Repo : installed Summary : The PHP HTML-embedded scripting language. (PHP: Hypertext Preprocessor) URL : http://www.php.net/ License : PHP Description: PHP is an HTML-embedded scripting language. PHP attempts to make it : easy for developers to write dynamically generated webpages. PHP also : offers built-in database integration for several commercial and : non-commercial database management systems, so writing a : database-enabled webpage with PHP is fairly simple. The most common : use of PHP coding is probably as a replacement for CGI scripts. : : The php package contains the module which adds support for the PHP : language to Apache HTTP Server.

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• Non-Windows, non-Unix-like OS's?

  - by dsimcha

  Since most operating systems I've heard of besides Windows seem to derive their heritage from Unix, I've been curious whether any OS's with the following characteristics exist: Not generally considered Unix-like, i.e. wasn't designed with Unix compatibility as a primary goal, doesn't use X11 as its default GUI in the most common distributions, doesn't support Unix commands by default, etc. Not in the Windows NT family. Is a modern production operating system, not a purely legacy operating system, a research/hobby project or an OS that's still in an alpha state. Is targeted at commodity x86/x64 PC hardware.

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