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  • Postfix spool on ext3 optimiziations in >=linux-2.6.34 days

    - by Luke404
    Given the very specific nature of the subject (we're not talking about mailboxes, just the spool; we're not talking about other filesystems, just ext3; and so on...) and the maturity of the softwares involved (linux kernel, ext3fs, postfix) I'd think there should be a more or less agreed on set of best practices to filesystem related tuning. I'm trying to get a roundup of them: data=journal became the default in recent kernels (somewhere around 2.6.30 IIRC) so we should be ok with that Wietse Venema says atime must be on, but Postfix documentation recommendsnoatime while talking about the Incoming Queue. Does that mean that postfix needs atime on just for some queue directories and will benefit from noatime on the others? can we use noatime if we just don't use ETRN? filesystem can be mounted nodev,noexec,nosuid - no* won't prevent you from setting attributes (postfix uses exec attr) they just won't have any effect (we don't run anything from the spool) the fsync() issue cited by Wietse and/or the chattr -S are probably linked to sync/async options of ext3fs but I do not understand them enough. Mouting the filesystem with async option is equivalent to chattr -R -S the whole fs? Seems like it will increase performance, but will that pose a risk of "loss of mail after a system crash" or is it really "safe on /var/spool/postfix" ? would you tune anything else on postfix-2.6.x to work better on ext3 or do you leave defaults everywhere? is there a "best" linux I/O scheduler for this kind of workload (namely CFQ or deadline?) or that's something that will vary too much based on hardware configuration? would you tune anything else in the filesystem or in the kernel? anything else? References: Postfix Performance here on SF Postfix documentation about the Incoming Queue Wietse Venema in Best file system on [email protected] here Postfix and ext3 on [email protected] here and there

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  • How to auto mark tape as free in DPM 2012?

    - by Massimo
    I have a backup server running System Center Data Protection Manager 2012, connected to a couple of tape drives (no library). I also have, of course, some tapes. Tape rotation is manual. The tape have been used before, by DPM itself (but the server has been completely rebuilt) and by other backup softwares; they are not emtpy. But they contain no data that DPM knows and/or wants to preserve, so they can be marked as free without having to run forcefreetape.ps1. When a tape is placed into the drive, it is required to perform an inventory, have it recognized as an imported tape and then mark it as free; otherwise DPM will simply refuse to use it. How can I tell DPM to automatically treat those imported tapes as free? And, of course, I do not want to reuse real backup tapes if by chance they get put into the drives before their expiration date, so the solution should mark imported tapes as free, but should not do the same with real, non-expired tapes.

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  • Blocking HTTPS and P2P Traffic

    - by Genboy
    I have a Debian server running at the gateway level on a LAN. This runs squid for creating block lists of websites - for eg. blocking social networking on the LAN. Also uses iptables. I am able to do a lot of things with squid & iptables, but a few things seem difficult to achieve. 1) If I block facebook through their http url, people can still access https://www.facebook.com because squid doesn't go through https traffic by default. However, if the users set the gateway IP address as proxy on their web browser, then https is also blocked. So I can do one thing - using iptables drop all outgoing 443 traffic, so that people are forced to set proxy on their browser in order to browse any HTTPS traffic. However, is there a better solution for this. 2) As the number of blocked urls increase in squid, I am planning to integrate squidguard. However, the good squidguard lists are not free for commercial use. Anyone knows of a good squidguard list which is free. 3) Block yahoo messenger, gtalk etc. There are so many ports on which these Instant Messenger softwares work. You need to drop lots of outgoing ports in iptables. However, new ports get added, so you have to keep adding them. And even if your list of ports is current, people can still use the web version of gtalk etc. 4) Blocking P2P. Haven't been able to figure out how to do this till now.

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  • Kindly guide me to buy a new laptop [on hold]

    - by Its me 007
    I am from India. I want to buy a new laptop. Shortlisted few but confused between which processor,Chip set and Graphics will be the best suited for my requirements. NOTE: NOT ABLE TO POST THE LINKS YOU WILL HAVE TO COPY PASTE IT. SORRY. 1) HP Pavilion 15-N004TX - 4th Gen CI5 - 4200U/4GB RAM/500 GB HDD/ 1GB Radeon Graphic - Rs 39990 www.homeshop18.com/hp-pavilion-15-n004tx-laptop-4th-gen-intel-core-i5-4200u-4gb-500gb-15-6-linux-silver-black/computers-tablets/laptops/product:30989197/cid:16317/ 2) Lenovo Essential G510 (59-398452) - 4th Gen Ci5 4200M/ 4GB/ 500 GB/Win8/2GB Graph ATI Sunpro 8570 - Rs 44969 www.flipkart.com/lenovo-essential-g510-59-398452-laptop-4th-gen-ci5-4gb-500gb-win8-2gb-graph/p/itmdp26eprwf5k5v?gclid=CMnh99GA2LoCFaRU4godNiUAGQ&semcmpid=sem_7847244212_laptopsnew_goog&tgi=sem%2C1%2CG%2C7847244212%2Cg%2Csearch%2C%2C24387103114%2C1t1%2Cb%2C%2Blenovo+%2Bg510%2F59+%2B398452%2Cc%2C%2C%2C%2C%2C%2C%2C2 3) HP Pavilion G6-2303TX Laptop (3rd Gen Ci5 3230M/ 4GB/ 500GB/ DOS/ 1GB Graph) - Rs 40500 www.flipkart.com/hp-pavilion-g6-2303tx-laptop-3rd-gen-ci5-4gb-500gb-dos-1gb-graph/p/itmdm6yzh4gr4cxd?pid=COMDM6YHWMGDRDEZ&ref=1d2b85fc-a03d-4c7d-844b-ec9e8dc95a81 4) HP Pavilion 15-E039TX Laptop (3rd Gen Ci5 3230M/ 4GB/ 1TB/ Win8/ 2GB Graph) - Rs 46690 www.flipkart.com/hp-pavilion-15-e039tx-laptop-3rd-gen-ci5-4gb-1tb-win8-2gb-graph/p/itmdn4d9wykhdcpz?pid=COMDN4CZGFMGJNTN&ref=1d2b85fc-a03d-4c7d-844b-ec9e8dc95a81 Now I am confused between: Which Processor and chipset is best? How much graphic card is enough? (Not a gamer) Is any of this laptop future proof i.e. it should at least support upcoming latest programming softwares which eats more processor and memory. Laptop will be mainly used for multiprocessing.It should be at least capable for following: Visual Studio 2012 and the upcoming versions for at least 4 years SQL server 2008 R2 and above Sharepoint Blend Photoshop Kindly suggest. If anyone know any good laptop with good configuration in the 50k budget kindly suggest. Thanks in advance.

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  • Connecting to unsecured wireless network

    - by Sanchez
    I would like to know what information is public and can be intercepted in a non-open, but unsecured wireless network. Moreover, is there anything I can do to make it more "secure", other than using https connection whenever possible. In more details, I recently discovered (with surprise) that the wireless network in my school is actually unsecured. Although not everyone can connect to it (you need a student ID), I am told that certain softwares like Wireshark would be able to intercept the data. Since I have been using the network for all private purposes (email, facebook etc), I do feel quite insecure now and would like to understand the situation a bit better. I installed Wireshark and tried to play with it but all I can see are something alien to me. In any case, all I see seems to come directly/indirectly from my IP address, and I have long thought that usually different computers in the same wireless network would be assigned different addresses. Am I wrong? If not, then I feel very confused about what information is actually being captured (potentially by other users in the network, since I don't think I could capture activities of others in the same network anyway), and whether it's safe to use the network at all. (Gambling on others in the same network showing good behaviour is apparently not an option.) Thank you.

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  • Very Slow DSL (ethernet) speed

    - by Abhijit
    I 'was' on opensuse 12.2 when my dsl speed was normal. Yesterday I switched from opensuse to ubuntu 12.04 and speed decreased. It came to range of 7-10-13-20-25-kbps. Then I switch to linux mint, and then to fedora. Still slow speed. When I was in ubuntu I disabled ipv6 but still no luck. Now I am in fedora but this time with DIFFERENT ISP. And still I am getting very slow sped. So my guess is this is nothing to do with os. What can be wrong? Is this problem of NIC? Does NIC speed decreases over time? Does NIC life ends over time as with keyboard or mouse? Help please All the os I used are 64 bit and my laptop is Compaq Presario A965Tu Intel Centrino DUal Core. Interesting thing to notice is I get normal speed while downloading torrent inside torrent client softwares. This slow speed issue applied to download from any web browser or installing software using terminal.

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  • Hadoop initscript askes password

    - by Ramesh
    I have installed hadoop on my ubuntu 12.04 single node .I am trying to execute an init script to make the hadoop run on start up but it asks password every time i execute. #!/bin/sh ### BEGIN INIT INFO # Provides: hadoop services # Required-Start: $network # Required-Stop: $network # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Description: Hadoop services # Short-Description: Enable Hadoop services including hdfs ### END INIT INFO PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HADOOP_BIN=/home/naveen/softwares/hadoop-1.0.3/bin NAME=hadoop DESC=hadoop USER=naveen ROTATE_SUFFIX= test -x $HADOOP_BIN || exit 0 RETVAL=0 set -e cd / start_hadoop () { set +e su $USER -s /bin/sh -c $HADOOP_BIN/start-all.sh > /var/log/hadoop/startup_log case "$?" in 0) echo SUCCESS RETVAL=0 ;; 1) echo TIMEOUT - check /var/log/hadoop/startup_log RETVAL=1 ;; *) echo FAILED - check /var/log/hadoop/startup_log RETVAL=1 ;; esac set -e } stop_hadoop () { set +e if [ $RETVAL = 0 ] ; then su $USER -s /bin/sh -c $HADOOP_BIN/stop-all.sh > /var/log/hadoop/shutdown_log RETVAL=$? if [ $RETVAL != 0 ] ; then echo FAILED - check /var/log/hadoop/shutdown_log fi else echo No nodes running RETVAL=0 fi set -e } restart_hadoop() { stop_hadoop start_hadoop } case "$1" in start) echo -n "Starting $DESC: " start_hadoop echo "$NAME." ;; stop) echo -n "Stopping $DESC: " stop_hadoop echo "$NAME." ;; force-reload|restart) echo -n "Restarting $DESC: " restart_hadoop echo "$NAME." ;; *) echo "Usage: $0 {start|stop|restart|force-reload}" >&2 RETVAL=1 ;; esac exit $RETVAL Please tell me how to run hadoop without entering password.

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  • openvpn port 53 bypasses allows restrictions ( find similar ports)

    - by user181216
    scenario of wifi : i'm using wifi in hostel which having cyberoam firewall and all the computer which uses that access point. that access point have following configuration default gateway : 192.168.100.1 primary dns server : 192.168.100.1 here, when i try to open a website the cyberoam firewall redirects the page to a login page (with correct login information, we can browse internet else not), and also website access and bandwidth limitations. once i've heard about pd-proxy which finds open port and tunnels through a port ( usually udp 53). using pd-proxy with UDP 53 port, i can browse internet without login, even bandwidth limit is bypassed !!! and another software called openvpn with connecting openvpn server through udp port 53 i can browse internet without even login into the cyberoam. both of softwares uses port 53, specially openvpn with port 53, now i've a VPS server in which i can install openvpn server and connect through the VPS server to browse internet. i know why that is happening because with pinging on some website(eb. google.com) it returns it's ip address that means it allows dns queries without login. but the problem is there is already DNS service is running on the VPS server on port 53. and i can only use 53 port to bypass the limitations as i think. and i can not run openvpn service on my VPS server on port 53. so how to scan the wifi for vulnerable ports like 53 so that i can figure out the magic port and start a openvpn service on VPS on the same port. ( i want to scan similar vulnerable ports like 53 on cyberoam in which the traffic can be tunneled, not want to scan services running on ports). improvement of the question with retags and edits are always welcomed... NOTE : all these are for Educational purpose only, i'm curious about network related knowledge.....

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  • openvpn port 53 bypasses allows restrictions ( find similar ports)

    - by user181216
    scenario of wifi : i'm using wifi in hostel which having cyberoam firewall and all the computer which uses that access point. that access point have following configuration default gateway : 192.168.100.1 primary dns server : 192.168.100.1 here, when i try to open a website the cyberoam firewall redirects the page to a login page (with correct login information, we can browse internet else not), and also website access and bandwidth limitations. once i've heard about pd-proxy which finds open port and tunnels through a port ( usually udp 53). using pd-proxy with UDP 53 port, i can browse internet without login, even bandwidth limit is bypassed !!! and another software called openvpn with connecting openvpn server through udp port 53 i can browse internet without even login into the cyberoam. both of softwares uses port 53, specially openvpn with port 53, now i've a VPS server in which i can install openvpn server and connect through the VPS server to browse internet. i know why that is happening because with pinging on some website(eb. google.com) it returns it's ip address that means it allows dns queries without login. but the problem is there is already DNS service is running on the VPS server on port 53. and i can only use 53 port to bypass the limitations as i think. and i can not run openvpn service on my VPS server on port 53. so how to scan the wifi for vulnerable ports like 53 so that i can figure out the magic port and start a openvpn service on VPS on the same port. ( i want to scan similar vulnerable ports like 53 on cyberoam in which the traffic can be tunneled, not want to scan services running on ports). improvement of the question with retags and edits are always welcomed... NOTE : all these are for Educational purpose only, i'm curious about network related knowledge.....

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  • Very Slow DSL (ethernet) speed [New Interesting Update]

    - by Abhijit
    Very IMPORTANT and INTERESTING UPDATE: Due to some reason I just thought to do a complete new setup and this time I decided to again have openSUSE plus ubuntu. So I first reinstall lubuntu and then I installed OpenSUSE 12.2 (64 bit). Now, my DSL speed is working very normal and fine on opensuse. So this is very scary. Is it possible for any operating system to manipulate my NIC so that it will work fine only on that operating system and not on another os? Regarding positive thinking and not being paranoid, what is it that makes ONLY suse to get my NIC to work at normal speed but ubuntu can not do it? Not even fedora? Not even linux mint? What all these OS are lacking that enables suse to work great? == ORIGINAL QUESTION == I 'was' on opensuse 12.2 when my dsl speed was normal. Yesterday I switched from opensuse to ubuntu 12.04 and speed decreased. It came to range of 7-10-13-20-25-kbps. Then I switch to linux mint, and then to fedora. Still slow speed. When I was in ubuntu I disabled ipv6 but still no luck. Now I am in fedora but this time with DIFFERENT ISP. And still I am getting very slow sped. So my guess is this is nothing to do with os. What can be wrong? Is this problem of NIC? Does NIC speed decreases over time? Does NIC life ends over time as with keyboard or mouse? Help please All the os I used are 64 bit and my laptop is Compaq Presario A965Tu Intel Centrino DUal Core. Interesting thing to notice is I get normal speed while downloading torrent inside torrent client softwares. This slow speed issue applied to download from any web browser or installing software using terminal.

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  • Setting up Web server so it is easy to migrate

    - by Nyxynyx
    Hi I am about to move my site from a VPS to another host's dedicated server. One of my concern is about scaling the site in the future that involves a change of server. Now that I am starting the dedicated server from scratch with only the OS, this means that I need to install the web server stack, including Apache and its mods, PHP, MySQL, PostgreSQL, Tomcat, Solr and a few other softwares like ImageMagick and git. Question: Is there a way for me to setup this new dedicated server such that I can easily migrate the entire site, both the technology stack and the code to the a newer server (upgrade from this new dedicated server) easily without reinstalling and reconfiguring everything? The code for the website is being handled by git and github so thats not a problem. I'm more conerned about the rest of the software required. Side question: The current VPS uses CentOs with cpanel and it seems that many packages are outdated on yum and cpanel interfers with the installation of many packages. Which OS should I go with for the new server? Ubuntu?

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  • Creating dynamic map graphs

    - by Mehper C. Palavuzlar
    I need a software (or softwares) to achieve the following. I'm not sure if it could be done, but I'd like to hear the suggestions from super users. The data I want to use for graphing purposes include sales figures of magazines by provinces. There are 81 provinces of Turkiye, and I want the computer to automatically paint / write on a graph according to the sales magnitude of the provinces. Since there are loads of magazines with loads of issues, the process must be executed automatically just after selecting the related magazine and issue. So there will be graphs showing the sales weight of the whole country with some nice illustrations. Those graphs might be used as part of some decision support mechanism to help field teams. Is it possible? I have all the data and base maps of Turkiye to be filled/painted. I'm sure this is not easy. If there is a way to do that, it might probably include more than one software. Thanks in advance for any valuable comments and answers.

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  • Unnamed, hidden partitions on my 500 GB HD, HP Pavilion dm4 Laptop

    - by emotionull
    I have multiple doubts here. Its a Seagate 500GB 7200RPM HD. I had installed it few months back after my original Laptop HD stopped working. The current drives on my latop, as shown by the Windows Disk Management are: After installing the new HD, I had done a complete clean install of Windows 7 and I didn't create any parition myself, manually. So there are 4 drives. Even previously, before I installed this new HD, my laptop had 4 Partitions. But the there were no un-named partitions like the two in this case. The other two were HP tools and Recovery or something. It was pre-configured, Factory installed Windows. Also, now when I right cick on the unnamed Drives from Disk Management, all the options are greyed out (see image) except the delete partition image. So how do I know what's inside those partitions? Will it be ok if I delete them? I want install Ubuntu and dual boot it with my current windows installation. I cannot do it in current setup as there are already 4 partitions of my HD and if I will try to make a new partition, it will be a logical one (correct me if I am wrong here). So can I delete the un-named, hidden partitions and use them for Ubuntu? A bit unrelated question. As a backup option, can I use the Windows 7's Backup and Restore facility to keep a complete backup of all the drivers and system softwares.

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  • Data recovery; nearly 1 tb of movies on a WD 3.5 tb personal cloud drive disappears with scanty traces

    - by Effector Dhanushanth
    I have a great collection of movies that I had stored in a logical mesh of folder on my 3.5 tb WD personal cloud drive. I woke up 1 morning and found that everything was fine with my data on this drive, except for my movie collection: There were two great folders, one "2sort" nd the other "segregated". out of all the segregated sub folders, only letter C D and 2 or 3 others remain. and the 2 sort folder, which has umpteen subfolders, amounting to more than 0.5 tb. is.. it's just gone!! this is a great downfall.. now this is a personal cloud drive and has no usb port etc. unfortunately to hardwire and recover files.. now I'm sure there are softwares out there that can help me recover my beloved movies from such an interestingly "hard-to-reach" (should I say?) device? what may that software be compadre, my happiness lies within your answer.. thank you.. remember, recovery software or (WD) personal cloud. :) these ovies were All, "hand-picked", over the course of ten years.. I just never catalogued my collection.. if I could just get the "list" of my lost collection, that'd be enough.. recovering em would be a bonus.. but they out to be damaged if I were to somehow recover you know? still, I'm certain they're all intact.. I guess the file index just got corrupted.. There surely is a veil of some sort that need to be thrown or pushed aside to reveal my movies.. what software can do/does that? thanks immensely!

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  • How can I automate or script daily downloads for any new anti- virus databases, and then have the program scan my drive?

    - by Macgrimm
    Howdy all Super Users" I humbly ask if any Super User can direct this long time, gray haired Apple Tech in the right direction on this issue. I believe there probably are many ways to skin this cat. But I am looking to find simply the best, most unattended way to get it done. Any help will be greatly appreciated. also (I know there are much better softwares out there for the Mac so please don't go there! The politics of this company dictate which Anti virus we have to use) anyway without any further wait: basically I am trying to automate 2 very important functions of Mc'Afee anti-virus for Mac. First I want to automate the process of retrieving new virus definition files, and second I want to automate the process of scanning for viruses. It turns out that Using Mc'Afee Anti-Virus for the Mac are both manual functions. And they left up to the user (per user account) to perform. Depending on all of about 150 MAc users to perform these 2 tasks themselves is around 65% compliance. My question then is: If I wanted to use the command line such as (open /Applications/McAfee\ Security.app) It will open up the Security Console. But how can I make command Mc'Afee go out and grab the definition files and scan the computer? I have to admit I am at a crossroad and Macaltimers has set in. I would really appreciate it if any of you "Super ~ Users" can help me out with this MacAltimers loss of how to what to do. Thanks to All up Front Macgrimm

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  • Preventing back connect in Cpanel servers

    - by Fernando
    We run a Cpanel server and someone gained access to almost all accounts using the following steps: 1) Gained access to an user account due to weak password. Note: this user didn't had shell access. 2) With this user account, he accessed Cpanel and added a cron task. The cron task was a perl script that connected to his IP and he was able to send back shell commands. 3) Having a non jailed shell, he was able to change content of most websites in server specially for users who set their folders to 777 ( Unfortunately a common recommendation and sometimes a requirement for some PHP softwares ). Is there a way to prevent this? We started by disabling cron in Cpanel interface, but this is not enough. I see a lot of other options in which an user could run this perl script. We have a firewall running and blocking uncommon outgoing ports. But he used port 80 and, well, I can't block this port as a lot of processes use them to access things, even Cpanel itself.

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  • Looking for a smart sync tool that exactly copies the structure of the source to that of the destination

    - by ????????
    I am a Windows 7 user and looking for a sync tool that exactly copies the structure of the source to that of the destination. The scenario is as follows: I have a laptop in which I save my daily projects. I always bring this laptop wherever I go to work, either at my school or at my house. At school I have a room in which I put an external hard drive to backup my laptop data. Upon arriving at school I always sync the external data with my laptop. Before leaving the school, I also do the synchronization if I make some modification in my laptop data. I do the same thing when I arrive and leave my house. Every month I reformat my laptop because of some trial softwares. I am using SyncToy 2.1 to sync the external drives with my laptop. The problem is as follows. Before formatting my laptop, I sync all external drives with my laptop. For example, My laptop structure: c:\data\file1.ext c:\data\folder1\file2.ext Both external drive structure: d:\data\file1.ext d:\data\folder1\file2.ext After reformatting my laptop, I move the file1.ext to folder1. So my laptop structure becomes, c:\data\folder1\file1.ext c:\data\folder1\file2.ext If I sync external drives with my laptop, I get d:\data\file1.ext d:\data\folder1\file1.ext d:\data\folder1\file2.ext I want the tool also remove d:\data\file1.ext. How to do this?

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  • How to decouple development server from Internet?

    - by intoxicated.roamer
    I am working in a small set-up where there are 4 developers (might grow to 6 or 8 in cuople of years). I want to set-up an environment in which developers get an internet access but can not share any data from the company on internet. I have thought of the following plan: Set-up a centralized git server (Debian). The server will have an internet access. A developer will only have git account on that server, and won't have any other account on it. Do not give internet access to developer's individual machine (Windows XP/Windows 7). Run a virtual machine (any multi-user OS) on the centralized server (the same one on which git is hosted). Developer will have an account on this virtual machine. He/she can access internet via this virtual machine. Any data-movement between this virtual machine and underlying server, as well as any of the developer's machine, is prohibited. All developers require USB port on their local machine, so that they can burn their code into a microcontroller. This port will be made available only to associated software that dumps the code in a microcontroller (MPLAB in current case). All other softwares will be prohibited from accessing the port. As more developers get added, providing internet support for them will become difficult with this plan as it will slow down the virtual machine running on the server. Can anyone suggest an alternative ? Are there any obvious flaws in the above plan ? Some key details of the server are as below: 1) OS:Debian 2) RAM: 8GB 3) CPU: Intel Xeon E3-1220v2 4C/4T

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  • Global Email Forwarding with EXIM?

    - by Dexirian
    Been trying to find a solution to this for a while without success so here i go : I was given the task to build a High-Availability Load-Balanced Network Cluster for our 2 linux servers. I did some workaround and managed to get a DNS + SQL + Web Folders + Mails synchronisation going between both. Now i would like my server 2 to only do mailing and server 1 to only do web hosting. I transfered all the accounts for 1 to 2 using the WHM built-in account transfert feature. I created 2 different rsync jobs that sync, update, and delete the files for mail and websites. Now i was able to successfully transfer 1 mail accounts from 1 to 2, and the server 2 works flawlessly. All i had to do was change the MX entries to point to the new server and bingo. Now my problem is, some clients have their mail softwares configured so that they point to oldserver.domain.com. I cant make the (A) entry of oldserver.domain.com point to the new server for obvious reasons. I thought of using .foward files and add them to the home directories of the concerned users but that would be very difficult. So my question is : Is there a way to configure exim so that it will only foward mails to the new server? I need to change all the users so they use their mail on server 2 without them doing anything. Thanks! EDIT : TO CLARIFY MY PROBLEM Some clients have their mail point to oldserver.xyz instead of mail.olderserver.xyz I want to know if i can do something to prevent modifying the clients configuration I would also like to know is there is a way to find out what clients aren't properly configured

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  • some HTTPS sites getting blocked on one machine in network

    - by shadowfoxmi
    I have a few computers connected to the internet via a router. I have been having some trouble with this one Windows 7 desktop. I can browse most of the sites without any trouble but some sites where the sign in page switches to a secure connection (https), the page does not load. It's not all of the sites though. I'm able to sign into gmail and a few other services that I know use https . The sites I'm having trouble with; yahoo's sign in page and the one that I have been using to test across different systems, http://iforgot.apple.com (which switchs to https) ;this particular site, i can access from other computers on the network and my phone. I only have windows firewall running and AVG. I even tried to stopping windows firewall but it did not help. Everything was fine last week. All I have installed in the past week is VOIP softwares namely skype, ooVoo and windows live messenger. I'm not sure how to find out what's being blocked and why and how to unblock it? Any suggestions would be greatly appreciated.

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  • Add Windows 7’s AeroSnap Feature to Vista and XP

    - by Asian Angel
    Are you using Windows Vista or XP and want that Windows 7 AeroSnap goodness on your own system? Then join us as we look at AeroSnap for Windows Vista and XP. Note: Requires .NET Framework 2.0 or higher (link provided at bottom of article). Setup What exactly does AeroSnap do you might ask…here is a quote directly from the website: “AeroSnap is a simple but powerful application that allows you to resize, arrange or maximize your desktop windows with just drag’n'drop. Simply drag a window to a side of your desktop to snap it or drag it to the top to maximize. When you drag it back to the last position, the last window size will be restored.” As soon as you have finished installing AeroSnap and started it for the first time the only item that will be visible is the “System Tray Icon”. Before going any further you should take a moment to view and make any desired adjustments in the “Options”. Note: AeroSnap works with multiple monitors. You may want to have AeroSnap start with Windows each time but the really nice setting to enable here is the “Snap Preview”. If you are using AeroSnap on Vista and have Aero enabled this will really be nice. The second portion may be of interest for those who would like to enable the keyboard shortcut function. One point worth noting about this screen is that the highest number of pixels from the screen’s edge that you can set AeroSnap for is 20 pixels. AeroSnap in Action AeroSnap is extremely easy to use…just grab the top of an app window and drag it to the left, right, or top of your screen. Since we installed this on Windows Vista we made certain to enable the “Snap Preview” in the “Options”.  We started off with dragging our Firefox 3.7 window towards the left…once we got close to the edge of the screen you can see that the left half of the screen temporarily “shaded over”. Note: The “Snap Preview” displays on the left and right movements but not the top movement. Releasing Firefox snapped it right into the “shaded over” part of the screen. The great thing about AeroSnap is that it is really easy to return the app window to it former size…all that you have to do is simply click on and grab the top portion of the app window. Moving Firefox towards the top of our screen and… It quickly snaps into filling the screen. One thing that we did notice is that the window did not “Maximize” as per the function for the button in the upper right corner. Dragging towards the right side now… And snap! Tucked in all nice and neat… You can minimize the app windows to the Taskbar and they will return to their previous “snap area” when “maximized” again. Conclusion If you have been wanting to add Windows 7’s AeroSnap goodness to your Vista and XP systems then you should definitely give this app a try. AeroSnap is very easy to set up and operate… Links Download AeroSnap for Windows Vista & XP Download the .NET Framework Similar Articles Productive Geek Tips Using Windows 7 or Vista System RestoreRoundup: 16 Tweaks to Windows Vista Look & FeelSelect Files using Check Boxes in Windows VistaSpeed up Your Windows Vista Computer with ReadyBoostHow-To Geek Bounty: $103.24(Paid!) for Active Desktop for Vista TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Add a Custom Title in IE using Spybot or Spyware Blaster When You Need to Hail a Taxi in NYC Live Map of Marine Traffic NoSquint Remembers Site Specific Zoom Levels (Firefox) New Firefox release 3.6.3 fixes 1 Critical bug Dark Side of the Moon (8-bit)

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  • Speeding up procedural texture generation

    - by FalconNL
    Recently I've begun working on a game that takes place in a procedurally generated solar system. After a bit of a learning curve (having neither worked with Scala, OpenGL 2 ES or Libgdx before), I have a basic tech demo going where you spin around a single procedurally textured planet: The problem I'm running into is the performance of the texture generation. A quick overview of what I'm doing: a planet is a cube that has been deformed to a sphere. To each side, a n x n (e.g. 256 x 256) texture is applied, which are bundled in one 8n x n texture that is sent to the fragment shader. The last two spaces are not used, they're only there to make sure the width is a power of 2. The texture is currently generated on the CPU, using the updated 2012 version of the simplex noise algorithm linked to in the paper 'Simplex noise demystified'. The scene I'm using to test the algorithm contains two spheres: the planet and the background. Both use a greyscale texture consisting of six octaves of 3D simplex noise, so for example if we choose 128x128 as the texture size there are 128 x 128 x 6 x 2 x 6 = about 1.2 million calls to the noise function. The closest you will get to the planet is about what's shown in the screenshot and since the game's target resolution is 1280x720 that means I'd prefer to use 512x512 textures. Combine that with the fact the actual textures will of course be more complicated than basic noise (There will be a day and night texture, blended in the fragment shader based on sunlight, and a specular mask. I need noise for continents, terrain color variation, clouds, city lights, etc.) and we're looking at something like 512 x 512 x 6 x 3 x 15 = 70 million noise calls for the planet alone. In the final game, there will be activities when traveling between planets, so a wait of 5 or 10 seconds, possibly 20, would be acceptable since I can calculate the texture in the background while traveling, though obviously the faster the better. Getting back to our test scene, performance on my PC isn't too terrible, though still too slow considering the final result is going to be about 60 times worse: 128x128 : 0.1s 256x256 : 0.4s 512x512 : 1.7s This is after I moved all performance-critical code to Java, since trying to do so in Scala was a lot worse. Running this on my phone (a Samsung Galaxy S3), however, produces a more problematic result: 128x128 : 2s 256x256 : 7s 512x512 : 29s Already far too long, and that's not even factoring in the fact that it'll be minutes instead of seconds in the final version. Clearly something needs to be done. Personally, I see a few potential avenues, though I'm not particularly keen on any of them yet: Don't precalculate the textures, but let the fragment shader calculate everything. Probably not feasible, because at one point I had the background as a fullscreen quad with a pixel shader and I got about 1 fps on my phone. Use the GPU to render the texture once, store it and use the stored texture from then on. Upside: might be faster than doing it on the CPU since the GPU is supposed to be faster at floating point calculations. Downside: effects that cannot (easily) be expressed as functions of simplex noise (e.g. gas planet vortices, moon craters, etc.) are a lot more difficult to code in GLSL than in Scala/Java. Calculate a large amount of noise textures and ship them with the application. I'd like to avoid this if at all possible. Lower the resolution. Buys me a 4x performance gain, which isn't really enough plus I lose a lot of quality. Find a faster noise algorithm. If anyone has one I'm all ears, but simplex is already supposed to be faster than perlin. Adopt a pixel art style, allowing for lower resolution textures and fewer noise octaves. While I originally envisioned the game in this style, I've come to prefer the realistic approach. I'm doing something wrong and the performance should already be one or two orders of magnitude better. If this is the case, please let me know. If anyone has any suggestions, tips, workarounds, or other comments regarding this problem I'd love to hear them.

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  • View AccuWeather Forecasts in Google Chrome

    - by Asian Angel
    Being able to keep an eye on the weather while at work or browsing the Internet is definitely helpful. If you like detailed forecasts then join us as we take a look at the Forecastfox Weather extension for Google Chrome. Getting Started As soon as the Forecastfox Weather extension has finished installing you will automatically be presented with the “Customize Forecastfox Page”. The default setting is for New York with English measurement units. Enter your location into the blank and hit “Enter” to display the listing for your city/area. If you are presented multiple options to choose from simply click on the appropriate listing. Once you have your city/area displayed you will notice that it is possible to have access to weather forecasts for multiple locations. You can easily remove any unneeded listings with the “Remove Link”. For our example we removed the New York listing. Note: Click on desired locations and measurement units to automatically set them as defaults (no save button required). Forecastfox Weather in Action You can hover your mouse over the “Toolbar Button” to see the current weather conditions. Clicking on the “Toolbar Button” opens a popup window with the current conditions, 7 day forecast, and a static satellite image. If desired you can access additional details for the current weather conditions. Clicking on “details” opens a new tab with a nice bit of information such as UV Index, Moon Phases, Cloud Ceiling, etc. Note: AccuWeather.com webpages will have some ads displayed. Perhaps you need the Hourly Forecast… Once again a new tab will be opened with the predicted hourly weather conditions for the current day. Going back to the popup window you may also select a specific day from the 7 day forecast. You will be presented with a “Day & Night” forecast for the chosen day with links to view “Additional Details & Hourly” information. Interested in the satellite image instead? You can click on either of the available links for larger images. Once the new tab is open you can choose from a variety of different satellite images. Conclusion If you have been wanting a solid weather forecast extension for your Chrome browser then Forecastfox Weather is definitely a recommended install. Links Download the Forecastfox Weather extension (Google Chrome Extensions) Similar Articles Productive Geek Tips Add Weather Forecasts to Google ChromeView Weather Underground Forecasts in Google ChromeView the Time & Date in Chrome When Hiding Your TaskbarView Maps and Get Directions in Google ChromeGoogle Image Search Quick Fix TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Office 2010 Product Guides Google Maps Place marks – Pizza, Guns or Strip Clubs Monitor Applications With Kiwi LocPDF is a Visual PDF Search Tool Download Free iPad Wallpapers at iPad Decor Get Your Delicious Bookmarks In Firefox’s Awesome Bar

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  • BEHIND THE SCENES AT A FLASH-MOB...

    - by OliviaOC
    Today, we interviewed Aarti, who recently organised a flash-mob for Oracle Campus, which you can see on our facebook page Hi Aarti, perhaps you could give us a quick introduction of yourself, and what you do at Oracle? I’ve been with Campus Recruitment for just over a year. I’ve been with Oracle for three years. I was keen to get into the campus role after having watched other colleagues working in campus and when the opportunity arrived I jumped at it. The journey has been fantastic thus far. I’m responsible for the GBU hiring at Oracle. Why did you record the flash-mob video - what were your goals? Flash-mobs were one thing that took off really big in India after the first one in Mumbai. It’s the hot thing in the student community at the moment. A better way to reach out and connect with students. I think that it is also a good way to demonstrate our openness and culture at Oracle – demonstrate that we are very flexible and that we have a cool culture. I knew the video could be shared on our social media pages and reach out to a wider student community What was the preparation and rehearsal for the video like? When I decided to do the video, I had to decide who I would like to do the flash-mob. The new campus hires to Oracle would be ideal for this. We were 2 teams at 2 different locations and Each team took 2-3 songs and choreographed it themselves. Every day at 5pm, each team would meet up and every other weekend the whole group met. Practicing went on for about a month like this. How was the video received by participants and by students on the University campus? The event was well received. We did it during the lunch break at the University so that there was a large presence of students around while the flash mob took place. We set up about an hour beforehand to get everything ready. The break-bell sounded and the students came out, that’s when the flash-mob started. The students were pleasantly surprised that a company was doing this. They also recognised some of the participants involved as former graduates. Since the flash-mob and the video of it that you recorded, have you had much response due to it? We have, especially in the past two weeks. We went back to the college to make some hires. The flash-mob was still fresh in their minds and they knew well who Oracle was as a result. Would you like to repeat this kind of creative initiative again with the recruitment team? Yes, absolutely! I’m over the moon with the flash-mob. My mind is working overtime now with ideas about the next things to do!

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  • Blackberry storm 9530 tracing touch events while scrolling

    - by SWATI
    hey in my screen there is a an edit field and 2 custom button fields as "OK" and "CANCEL" Below buttonfield there are some more focussable label fields when i write a name in edit field and press enter then focus comes to "OK" button but how to set focus on "CANCEL" button. Moreover while scrolling the focus does not automatically move ahead??? what to do may be i m confused with touch events and their handling!!! Kindly help!!!!!!!!!!!! Code: txt_Name = new EditField(TextField.NO_NEWLINE) { public void paint(net.rim.device.api.ui.Graphics g) { g.setColor(Color.MAROON); super.paint(g); } }; txt_Name.setFont(font); v1 = new VerticalFieldManager(); v1.add(txt_Name ); ButtonField btn1 = new ButtonField("OK",ButtonField.CONSUME_CLICK); ButtonField btn2 = new ButtonField("CANCEL",ButtonField.CONSUME_CLICK); v2 = new VerticalFieldManager(); v2.add(btn1); v2.add(btn2); LabelField l1 = new LabelField("Hello Moon ",Field.Focussable); LabelField l2 = new LabelField("Hello Citizen",Field.Focussable); LabelField l3 = new LabelField("Hello People",Field.Focussable); LabelField l4 = new LabelField("Hello world",Field.Focussable); v3 = new VerticalFieldManager(); v3.add(l1); v3.add(l2); v3.add(l3); v3.add(l4); add(v1); add(v2); add(v3); } protected boolean navigationClick(int status, int time) { if(OK.isFocus()) { //execute some code return true; } if(CANCEL.isFocus()) { //execute some code return true; } }

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