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• What does the "Maximum Frequency" number mean in the Windows Resource Monitor?

  - by nhinkle

  In the Windows Resource Monitor's CPU tab, there is a status box and graph for the "Maximum Frequency", right next to the "CPU Usage" values. What does this mean? The value is sometimes over 100% on my system... what could that imply? By looking at CPU-z's real-time report of the processor's clock speed, it seems to be loosely related to what frequency the CPU is running at, which would imply that it means "percent of maximum possible frequency the CPU is running at"; this would be of relevance on systems with SpeedStep and/or TurboBoost technology (or similar). Furthermore, setting the system to "power saving mode" lowers the "maximum frequency" value to around 60%, while setting it to "high performance" mode sets it to around 110%. However, the percentage does not seem to exactly correlate to the CPU speed being shown. What value is this actually representing then?

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• what is the differences between (libapache2-mod-php5 ) and ( libapache2-mod-php5filter)

  - by tawfekov

  i had noticed that some code doesn't play nice when i use libapache2-mod-filter while it working as expected in libapache2-mod-php5 the error was generated by doctrine + it's very simple like : $db = new self(); $db["name"] = $name; $db["desc"] = $desc; $db->save(); /// it throw the error here error message like : Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'desc) VALUES ('aaaaaaaaaaa', 'aaaaaaaaaaaa')' at line 1 so what is the real difference between the both modules for php5 ???

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• HOWTO Catch/Redirect all outgoing e-mails on Win2K and Redhat Enterprise

  - by John

  Background: I am integrating two separate web application that are developed in ASP .NET and JSP/Struts. As such, they are hosted on two different server technologies, namely Win2K3 and Redhat Enterprise Server 5.5. Problem: There is a copy of production data in my test environment with real e-mail addresses. I need to test the e-mail functionality of these applications, but I do not want them to send out actual e-mails. Is there a way to catch and redirect all outgoing e-mails? Ideally, I would like to send all outgoing e-mails to another e-mail (i.e., [email protected]) so my testers can look at them. Thanks for the help in advance!

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• Which kerberos flavor?

  - by Michael Lowman

  So I'm setting up a small network with all the standard stuff (files, email, etc.) and I've decided to go with a Kerberos+LDAP solution. Any ideas or recommendations on Heimdal vs. MIT? I've used MIT before, and tangentially Heimdal, but I don't really know of any real reason for using one over the other. I just know that I'd prefer not to realize I'd rather be running MIT after getting the whole Heimdal up and running with a full user database. If any other info'd be useful, I'm happy to provide.

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• Setting the Timezone with an automated script

  - by Tom

  I'm writing scripts to automate setting up new slicehost installations. In a perfect world, after I started the script, it would just run, with no attention from me. I have succeeded, with one exception. How do I set the timezone, in a permanent (survive reboot) and sane (adjust for standard and daylight savings time, so no just forcing the date) ... manner that doesn't require input from me? Currently, I'm using dpkg-reconfigure tzdata This doesn't seem to have any way to force parameters into it. It demands user input. EDIT: I'm editing here, rather than commenting, since comments don't seem to allow code blocks. Here's the actual code I ended up with, based on Rudedog's comment below. I also noticed that this doesn't update /etc/timezone. I'm not certain who uses that, but in case anybody does, I'm setting that too. TIMEZONE="America/Los_Angeles" echo $TIMEZONE > /etc/timezone cp /usr/share/zoneinfo/${TIMEZONE} /etc/localtime # This sets the time

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• Nagios configuration management

  - by HannesFostie

  I am going to implement Nagios (most likely anyway, could turn out to be another tool as well) and I was wondering if anyone would like to share their best practices when it comes to creating, managing and maintaining the config files when it comes to scalability and managability as I find that it might quickly become a real big mess. Any tips, examples or even full configurations would be most welcome and I'd happily look them over. Tools would be welcome as well. Tried out NConf so far, but the generated config files don't seem to do what was promised (not including the parent information for one, and just a PITA to get them working - they generate a ton of errors when checking the config files with the script supplied by nagios) Thanks

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• Architecture behind live streaming [on hold]

  - by l19

  I'm a Comp Sci undergraduate student, and I'm currently trying to understand the architecture behind streaming. I hear several terms and I'm not quite sure how they are related (e.g. streaming, broadcasting, ingesting, etc.) Is there a blog post or book that explains: How it all works in a high-level view (the workflow) The architecture (i.e. I capture content using my camera and want to display it real-time to an audience. I imagine that the content will be transferred to a server, but how does that server transmit the information to several users simultaneously?) Thanks!

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• firehol (firewall) with bridge: how to filter

  - by Leon

  I have two interfaces: eth0 (public address) and lxcbr0 with 10.0.3.1. I have a LXC guest running with ip 10.0.3.10 This is my firehol config: version 5 trusted_ips=`/usr/local/bin/strip_comments /etc/firehol/trusted_ips` trusted_servers=`/usr/local/bin/strip_comments /etc/firehol/trusted_servers` blacklist full `/usr/local/bin/strip_comments /etc/firehol/blacklist` interface lxcbr0 virtual policy return server "dhcp dns" accept router virtual2internet inface lxcbr0 outface eth0 masquerade route all accept interface any world protection strong #Outgoing these protocols are allowed to everywhere client "smtp pop3 dns ntp mysql icmp" accept #These (incoming) services are available to everyone server "http https smtp ftp imap imaps pop3 pop3s passiveftp" accept #Outgoing, these protocols are only allowed to known servers client "http https webcache ftp ssh pyzor razor" accept dst "${trusted_servers}" On my host I can connect only to "trusted servers" on port 80. In my guest I can connect to port 80 on every host. I assumed that firehol would block that. Is there something I can add/change so that my guest(s) inherit the rules of the eth0 interface?

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• Where can I find a tutorial for PCB?

  - by BCS

  I'm looking at using this PCB layout program and looking for a tutorial for it. After skimming through the manual, and a few attempts at guessing how to use it, I have to say that in combination they are a near ideal example of how Not to make a UI easy to use. The GUI seems to borrow it's key combinations from vi (despite not being a text editor) and the manual seems to say more about what things do than how to do things. The closest I can find is this section that starts with the todo note: [...] do a real-world tutorial example.

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• Problems getting Squirrelmail and passenger working on apache

  - by Kenneth

  I'm trying to have a setup where I want to run a squirrelmail and Passenger on the same apache server, having a url point to squirrelmail and everything else handled by passenger. I've gotten so far that both squirrelmail and passenger will run fine by themselves but when passenger is running it handles all urls. So far I've tried using Alias and Redirect to point a webmail/ url to squirrelmails directory but that does not work. Here is my httpd.conf file: <VirtualHost *:80> ServerName not.my.real.server.name DocumentRoot /var/www/sinatra/public # Does not work: #Redirect webmail/ /usr/share/squirrelmail/ #<Directory /usr/share/squirrelmail> # Require all granted #</Directory> <Directory /var/www/sinatra/public> Order allow,deny Allow from all </Directory> </VirtualHost>

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• Anyone know where I can download a copy of Sun Java System Active Server Pages 4.0.3 for Solaris

  - by ewengcameron

  I've contacted Sun regarding this and they have told me that the download is no longer available as Active Server Pages 4.0.3 is now End Of Life. We need to upgrade our server to 4.0.3 to acheive PCI-DSS compliance. Anyone know of a site where I can download older copies of Sun files? Sun offer 4.0.1 and 4.0.2 to download but not 4.0.3 which is going to cause problems come October when Visa stops accepting transactions from non PCI compliant servers. If Sun kept their naming system consistent across versions, the file would be called "sjsasp403-sol-sparc.tar". I know the real solution is to upgrade every site on the server to use a different server language, i.e. PHP, and in the long term, this is our goal but we have over 100 sites requiring upgrading and its not a viable solution to get this done before October.

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• Chatbox/shoutbox/forum with the following features.

  - by Mick

  I would like to set up a simple forum for a small number of users. The features I would like are the following, in order of priority: logging on not compulsory for posting. A single thread. All the messages are immediately visible - no need to "open" them. most recent message at the top by default. The ability to give selected users the power to delete spam messages. The ability to upload photos. Avatars. Configurable skins/size/shape. So far the closest I have come is www.tag-world.com but there are no avatars and no photos.

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• unique .htaccess question about mod_rewrite and RewriteCond

  - by Stephen

  I have a few rewrite rules like these RewriteRule ^dir/(.*)-something.html otherdir/file1.php?var1=val&var2=$1 [L,NC] RewriteRule ^dir/ otherdir/file2.php?var1=val [L,NC] dir/ is not a real directory. Everything above works as expected. However, the user is able to type anything like mysite.com/dir/asdfasdfasdfsdf And they are still redirected to file2.php. If the user types in just garbage I'd like to serve a 404 instead. I'm guessing I need a RewiteCond that will test for blank space after the slash and only then serve file2.php, but I'm unsure how to write it.

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• 4K sectors: Why are hard drives moving to 4096 byte sectors, vs. 512 byte sectors? Are 4K sectors a

  - by Chris W. Rea

  I've noticed that some Western Digital hard drives are now sporting 4K sectors, that is, the sectors are larger: 4096 bytes vs. the actual de facto standard of 512 bytes. So: What's the big deal with 4K sectors? Is it marketing hype, or a real advantage? Why should somebody building a new PC care, or not, about 4K sectors? Why is this transition taking place now? Why didn't it happen sooner? Are there things to look out for when buying a 4K sector hard drive? e.g. incompatibility? Anything else we should know about 4K sectors?

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• Configure IIS to rewrite IP Address to Site Name

  - by Bath Man

  So i've started my first web site from home, and I'm trying to get it up and running and google crawlable and the like, but I can't seem to figure out how to have my site name returned in the address bar instead of my IP address. I've purchased a domain name for my site on Godaddy and then set it to redirect to my site. When you type in the domain name, you get redirected to http://0.0.0.0/default.aspx (not my real IP obviously), and that stays in the user's address bar. In order to fix that temporarily, I've set up masking on Go Daddy which keeps the URL in the address bar, but just shows my website in a frame. This is fine for users visiting the site, however any kind of automated robot such as GoogleBot cannot discover my content because of the frame. I've looked into ISAPI filters and server-site-rewriting, and the like... but I just can't quite figure out how to do what I need it to do. Any simple suggestions or links would be appreciated.

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• Install PHP on RedHat

  - by John R

  I just ran yum install php in the command prompt. Everything went fine ('complete!') as per the dialogue. I then uploaded a file that does not use short tags and is named with the proper extension (i.e., the name is test.php). <?php print "hello world"; ?> When I navigate my browser to test.php it just prints each of the characters shown above; i.e., PHP is not interpreting it. What might be the problem? Also, if there is a configuration file that needs to be updated, please tell me what directory path I am likely to find that file. Edit: Apache2 & Redhat

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• Where can I learn various hacking techniques on the web?

  - by Carson Myers

  I would like to try my hand at hacking -- that is, exploiting various website vulnerabilities. Not for any illegal purpose mind you, but so I can have a better understanding and appreciation of these exploits while writing my own web software. I seem to recall that there was a community that hosted a bunch of demo websites, and you had to find and exploit certain vulnerabilities with each one. I can't remember what it is called but this is the sort of thing I am looking for -- I have read a tonne of little XSS and CSRF examples but have yet to find a real-life hands-on example of one. Does anyone know of such a place, where I can be given an example page and look for security holes? I would really rather not try this with actual websites, I don't want to break any laws.

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• Parallels 5: upgrade from Vista to Win 7: annoying deadlock

  - by nobody

  What I have: Parallels 5, Vista installed. Trying to upgrade to Win 7. I have the Win7 .iso mounted as a DVD to my virtual machine. When I start the machine from this DVD, and attempt the upgrade, I'm told (paraphrased) "You booted from DVD. Don't do this. Reboot, then insert the DVD, commence the upgrade from there." But when I try that, the upgrade keeps failing because "There is not enough disk space". I've proven this is a red herring of an error message; the real problem is the installer can't find -any- disk drives. When I instead choose the "Advanced" install, and I am prompted to choose the disk drive, there aren't any to choose from. How do unblock this deadlock?

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• How to calibrate a HDTV that is being used as monitor?

  - by Mike

  I have a HDTV I am using as a second monitor. The first monitor, is a real computer monitor, not a TV and has a fantastic image. The second one, the HDTV has a good image, but it is a little bit blurred and has the problem you can see on the picture below, a kind of red halo around the edges. I think it has something to do with red contrast. Other colors show this problem too, specially the green. The problem is that the TV has no contrast adjustment. Instead it has something called IRE 10 points and IRE 2 points. Taking IRE 10 for example, it has 4 controls for each of the 10 points: luminosity, R, G and B. I could not find a page where I can understand what this IRE is and how should I adjust this. Can someone tell me how should I proceed to calibrate this TV for best picture? thanks for any help.

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• Recommended website performance monitoring services? [closed]

  - by Dennis G.

  I'm looking for a good performance monitoring service for websites. I know about some of the available general monitoring services that check for uptime and notify you about unavailable services. But I'm specifically looking for a service with an emphasis on performance. I.e., I would like to see reports with detailed performance statistics from multiple locations world-wide, with a break-down on how long it took to fetch the different website resources, including third-party scripts such as Google Analytics and so on (the report should contain similar details such as the FireBug Net tab). Are there any such services and if so, which one is the best?

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• How can I create an external SSL wrapper/tunnel page for an insecure webpage behind a firewall?

  - by Ross Rogers

  I have an security cam with a built-in webpage inside my home network. That camera is using basic HTTP authentication instead of SSL. I want to be able to access the camera's webpage from outside my network, but I don't want to open an unencrypted video stream to the outside world. Right now, I'm doing some cumbersome ssh tunneling where I bounce off an ssh server like: ssh -N -L 9090:CAMERA_IP:80 [email protected] and then I connect to my web page like: http://localhost:9090 But this is a pain. Now, gentle reader, I beseech you to tell me how I can use linux (Ubuntu) to get a fully encrypted SSL connection to my internal web page without the hassle of creating an ssh tunnel each time. I believe I can use stunnel, but I'm not sure of the command.

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• Add a remote printer over ssh on OSX?

  - by GradGuy

  I have a printer at my office that is connected to a local network and my linux box at work can see it on the network. However, it is not visible to the outside world. I was trying to figure out a way to add it on my MacAir and so far have found two options: 1) Using ssh tunnel via CLI: cat file.pdf | ssh user@linuxbox lpr. 2) With Chrome installed on the linux box, using the Google Cloud Print service on the remote box and automator on my MacAir I can add the printer to Cmnd+p dialog box I like the first method since it does not require Chrome be installed and the second one since it allows to use Cmnd+p inside all applications. I was wondering if there is a way to combine by using automator to run the first command line script. What about port forwarding? Is it possible to forward the remote CUPS 631 port to a local port and then add the printer normally? What other methods would you recommend?

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• ARM laptop available?

  - by Ken

  Hearing all the fuss about some new consumer product that uses an ARM Cortex A8, I'm interested to get in on some of the action. But I want a real programmable computer running something like Linux. I've seen many, many reports in the past 2 or 3 years about prototype ARM laptops with great battery life. Unfortunately, when I tried googling today, all I can find are the old videos and press releases about the prototypes, not a shipping product. Is there an actual ARM laptop available today? Or did everybody give up and just use Intel Atom chips?

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• Strategy to allow emergency access to colocation crew

  - by itsadok

  I'm setting up a server at a new colocation center half way around the world. They installed the OS for me and sent me the root password, so there's obviously a great amount of trust in them. However, I'm pretty sure I don't want them to have my root password on a regular basis. And anyway, I intend to only allow key-based login. On some cases, though, it might be useful to let their technical support log in through a physical terminal. For example, if I somehow mess up the firewall settings. Should I even bother worrying about that? Should I set up a sudoer account with a one-time password that will change if I ever use it? Is there a common strategy for handling something like this?

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• Client backup solution for small (100-150 user) homogenous win/nix/mac office?

  - by Gomibushi

  We are currently using Symantec Backup Exec with Desktop and Laptop Option for our Windows clients, time machine for mac and offer simple rsync to linux users, in addition to home folders that are always backed up and available. We are not overly happy with the horrid complexity and multitude of minor bugs in SBE, but "when you don't touch it, it mostly works". Ideally we'd like to offer a real and full backup solution to all clients, but mostly to Linux users, as they don't have a good alternative. I have barely tested Druva on windows, and it is promising in its simplicity and "it just works" looks, but does anyone have experience with it? This post lists some that I will look at.

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