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  • Which browser does my computer use to open a Web page? [on hold]

    - by msh210
    I know little about networking the Internet, but, from what I understand, it works — very approximately — as follows: I, sitting at the computer example.com, send a message saying, roughly, "get http://s.tk" to my ISP, which passes the message along, eventually to the machine at s.tk. The s.tk machine gets "example.comhas sent 'gethttp://s.tk'", so sendssomefileto its ISP which passes the file along, eventually to the machine atexample.com`. When the file gets back to example.com, my computer, how does my computer know what to do with it? I'm sure the headers (or something else) indicate it's a Web page rather than, say, a Usenet post — that's not my question. My question is: how does it know whether to display the Web page in my open Opera window or my open Firefox window, or my other open Firefox window, or, heck, to open a new browser instance?

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  • Why does cd print when run in command substitution?

    - by reasgt
    If I use the 'cd' BASH built-in in a command substitution, it prints extra stuff to stdout, but only when piped to, eg., less. $ echo `cd .` # The output is a single newline, appended by echo. $ echo `cd .` | less # less displays: ESC]2;my.hostname.com - tmp/testenv^G (END) What's going on there? This behavior isn't documented in the bash man page for cd. Obviously, running just 'cd' in a command substitution is silly, but something like NEWDIR=`cd mypath; pwd` could be useful. I solved this by instead using NEWVAR=`cd mypath > /dev/null 2>&1; pwd` but I still want to know what's going on. Bash Version: GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu) Copyright (C) 2005 Free Software Foundation, Inc. Distro: Scientific Linux SL release 5.5 (Boron)

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  • Laptop wakes from sleep, once, due to audio controller (Windows 7)

    - by stijn
    The laptop is a recent Dell XPS 15z and the problem is as follows (reproducible about 90% of tries): put laptop to sleep using either Start-Sleep or closing the lid laptop goes to sleep after about 5 seconds, but instantly wakes again showing a black screen (touching the keyboard or moving the mouse shows the login screen one normally gets after wake) login again, put laptop to sleep latop stays in sleep mode output of powercfg -lastwake after the first instant wake shows the audio controller is responsible. Why would that be, why only the first try, and how to fix this? Wake History Count - 1 Wake History [0] Wake Source Count - 1 Wake Source [0] Type: Device Instance Path: PCI\VEN_8086&DEV_1C20&SUBSYS_04461028&REV_05\3&11583659&0&D8 Friendly Name: Description: High Definition Audio Controller Manufacturer: Microsoft

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  • How to make a pxe bootable 10MegaByte or larger dos image?

    - by rjt
    Would like to make a "massive" DOS floppy disk image, say 10MegaBytes or more containing all the firmware updates i need for any system, harddrive, BIOS. i do not need the DOS image to be networkable as everything will be on the PXE booted image, but networking would be nice. Since ZipDisks were attached to the floppy disk controller and were over 100MegaBytes, this should be possible. i tried a long time ago to do this and spent too much time on it only to have it fail to boot. So if someone has reliable instructions on how to create such a nightmarish beast and edit it, please let me know. One image that can used for PXE and copied to a USB stick would be a plus. Too bad manufacturers don't supply a single bootable Linux ISO containing all their firmware updates, that would be easy to boot over-the-lan and have networking. HP servers do this and it is awesome.

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  • Photo/Video gallery for Ubuntu web server

    - by Andrew
    I'm trying to have a gallery that can display images as well as videos for visitors to my web server. I'm running Ubuntu 12.10, and have Apache installed. All my images and videos are in /var/www/media. I've taken a look at bbgallery, which is simple enough for me, but I don't think it supports video. I've also looked at Single File PHP Gallery, but it doesn't support video. Does anyone know of a gallery that supports video as well, which I can use for my web server? EDIT: I do not have a database.

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  • Static error page served by nginx when my application is down

    - by dreeves
    If my (Rails) application is down or undergoing database maintenance or whatever, I'd like to specify at the nginx level to server a static page. So every URL like http://example.com/* should server a static html file, like /var/www/example/foo.html. Trying to specify that in my nginx config is giving me fits and infinite loops and whatnot. I'm trying things like location / { root /var/www/example; index foo.html; rewrite ^/.+$ foo.html; } How would you get every URL on your domain to serve a single static file?

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  • Ubuntu 12.04 Samba File Server timeout on large file

    - by phileaton
    I am a beginner with servers. I checked the error logs for Samba and it appears that Samba is timing out when I transfer large files. I can successfully add pdfs for instance to my file server. However, I tried to add a large 1.2gb video file and it did not succeed. This is the error in the log: smbd/process.c:244(read_packet_remainder) read_fd_with_timeout failed for client 0.0.0.0 read error = NT_STATUS_CONNECT$ Is there a way I can stop it from timing out? Any pointers would be great! Thanks!

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  • Using QoS to prioritize IP addresses

    - by Tristan
    I have a Western Digital N900 router. I was hoping I'd be able to throttle users based on their MAC address with it, which isn't possible sadly. Seems simple in principle though, duh. The battle against bandwidth hogging roomates rages on. Could I just set the local IP range to their IP, and then set the Local port range to every single port in existence. Then prioritize their IP to lower than mine? Will this work? What are all the ports? And what's the difference between Local and Remote IPs or Ports? Name: Roomate, Priority: Low, Protocol: TCP or UDP ??, Local IP Range: .101 to .101, Local Port Range: 0 to infinity, Remote IP Range: ? to ?, Remote Port Range: ? to ?

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  • Create mix CDs from MP3 files

    - by Dave Jarvis
    How would you write a script (preferably for the Windows commandline) that: Examines thousands of MP3 files stored on a single drive (e.g., G:\) Randomizes the collection Populates a series of directories up to 650MB worth of songs (without exceeding 650MB) Every song is shucked exactly once (Optional) The directory size comes as close as possible to 650MB The DIR, COPY, and XCOPY commands have no explicit file size switches. A few Google searches have come up with: File size condition in DOS Cygwin and UWIN DOS File sizes It would be ideal if UNIX-like environments can be avoided. My question, then: How do you compare file (or directory) sizes using the Windows commandline?

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  • on Red Hat Enterprise and CentOS, what is creating /var/run/reboot-required?

    - by EdwardTeach
    On CentOS 5.8+ and Red Hat Enterprise 6+, when installing/updating packages, I notice a flag file /var/run/reboot-required is created when appropriate. On Ubuntu (and Debian too, I'm guessing), if package "update-notifier-common" is installed, a package postinst script triggers creation of this flag file. On RHEL/CentOS I can't figure out how this is happening. For instance, on RHEL and CentOS I recently installed several updates and /var/run/reboot-required was created. One of them was an "openssl" package upgrade. I assume this was what created the flag file, since on Ubuntu it also works this way. However I looked at all "rpm -q --scripts" for each updated package, and didn't see anything that was likely to have created that flag file. Mostly I saw "postinstall program: /sbin/ldconfig". So my questions are: What creates this flag file on RHEL/CentOS? Does it require a special package to be installed, analogous to the "update-notifier-common" package on Ubuntu?

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  • VMWare Guest NIC Teaming

    - by Justin Popa
    We're looking to add additional bandwidth to a VM running on an ESXi cluster running 5.1. How can I team these within the VM? I suspect I need to add a second e1000 and then install some Intel software to team them. Any idea which version of Intel driver? Is there some better software to use? EDIT: Sorry, neglected some information. The guest OS is Win2k8R2. The physical NICs on the host are 1Gbps. The reason this has come up is we are seeing the VM hitting near cap on the capability of a single 1Gbps link (Usually at 100-110MBps, bursting to 130s, but I think that may just be a UI math lie) and we're interested in seeing if adding an additional NIC in a teamed setting will increase the overall throughput.

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  • git/gitolite: big git repo with several mini projects

    - by Jay
    I'm pretty new to the whole version control thing, and even more so with git. I recently installed git on my computer(s) and set it up on a NAS server. However, I have several client folders with several project folders per client folder. Each one of these client folders is a giant repo, encompassing every project inside it. What I'm wondering is, is there a way to break this apart? So, for instance: The NAS is my 'origin', and has gitolite installed On computer1 I have every project folder in a client folder ever created (clean branch), In computer2 I do not a new checkout of the client branch (because all the projects in that branch are all completed and I don't need a working copy of it), but I do have a brand new project folder for that client "newproject". Is there a way to commit and push to the NAS repo from computer2? Or perhaps is there a better way of organizing all this?

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  • Bandwidth Control on our Internet Connection

    - by AlamedaDad
    Hi all, I have Covad dual/bonded T1 service in our office coming through a Cisco 1841 and then through a Sonicwall 3060Pro/Enhanced SW firewall. The problem I'm looking for some input on is how to limit the amount of bandwidth any single user/PC can user for downloading a file from the Internet. It's become an issue that when one person happens to download let's say an ~300MB file, normal internet access for the other employees slows to a crawl. I've seen through MRTG that in fact usage of the circuit jumps to the full 3mb for the duration of the download and then drops. Is it possible to control this? I'm not familiar with QOS or the like so I'm not sure. Any help on this would be appreciated. Thanks...Michael

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  • MaxClients in apache. How to know the size of my proccess?

    - by Larry
    From http://httpd.apache.org/docs/2.2/misc/perf-tuning.html The single biggest hardware issue affecting webserver performance is RAM. A webserver should never ever have to swap, as swapping increases the latency of each request beyond a point that users consider "fast enough". This causes users to hit stop and reload, further increasing the load. You can, and should, control the MaxClients setting so that your server does not spawn so many children it starts swapping. This procedure for doing this is simple: determine the size of your average Apache process, by looking at your process list via a tool such as top, and divide this into your total available memory, leaving some room for other processes. The main issue is that I can't understand how to know the size, because, well i have the size of httpd on no more of 3888 But, if we need to determine the number for MaxClients, and I have 4GB of RAM, so I get: 972, so I should use like 900 in the MaxClients?

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  • Scripting a database copy from MS Sql 2005 to 2008 without detach/backup/RDP

    - by James Santiago
    My goal is to move a single SQL 2005 database to a seperate 2008 server. The issue is my level of access to both servers. On each I can only access the database and nothing else. I cant create a backup file or detach the database because I don't have access to the file system or to create a proxy. I've tried using the generate script function of sql 2005 management studio express to restore the schema but receive command not supported errors when attempting to execute the sql on the new database. Similarly I tried using EMS SQL Manager 2005 Lite to script a backup of the schema and data but ran into similar problems. How do I go about acomplishing this? I can't seem to find any solutions outside of using the detach and backup functions.

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  • How to know the root device size of some public AMI?

    - by red23jordan
    Since I do not want to pay money for my testing, the free limit size is 10G. I can know the root device root for some default AMI such as Amazon Linux AMI 2012.03 The Amazon Linux AMI 2012.03 is an EBS-backed, PV-GRUB image. It includes Linux 3.2, AWS tools, and repository access to multiple versions of MySQL, PostgreSQL, Python, Ruby, and Tomcat. Root Device Size: 8 GB And the last row displayed 8GB. However, if I find AMI in Community Page, it does not show the root device size. Can anyone know how to use the instance such as centOS that is not provided by default but it is under 10GB so that I can still free use?

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  • What sort of attack URL is this?

    - by Asker
    I set up a website with my own custom PHP code. It appears that people from places like Ukraine are trying to hack it. They're trying a bunch of odd accesses, seemingly to detect what PHP files I've got. They've discovered that I have PHP files called mail.php and sendmail.php, for instance. They've tried a bunch of GET options like: http://mydomain.com/index.php?do=/user/register/ http://mydomain.com/index.php?app=core&module=global§ion=login http://mydomain.com/index.php?act=Login&CODE=00 I suppose these all pertain to something like LiveJournal? Here's what's odd, and the subject of my question. They're trying this URL: http://mydomain.com?3e3ea140 What kind of website is vulnerable to a 32-bit hex number?

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  • What are the benefits of running chef-server instead of chef-solo?

    - by strife25
    I am looking at automated deployment solutions for my team and have been playing with Chef for the past few days. I've been able to get a simple web app up an running from a base Red Hat VM using chef-solo. Our end goal is to use Chef (or another system) to automatically deploy application topologies to the cloud as we run builds. Our process would basically run like so: Our web app code, dependencies, and chef cookbooks are stored in SCM A build is executed and greats a single package for images to acquire and test against The build engine then deploys new cloud images that run a chef client to get packages installed. The images acquire the cookbooks from SCM or the Chef server and install everything to get up and running What are the benefits and/or use cases for getting a Chef Server running? Are there any major benefits to have a Chef Server hold and acquire the cookbooks from SCM vs. using chef-solo and having a script that will pull the cookbooks from SCM?

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  • TRADACOMS Support in B2B

    - by Dheeraj Kumar
    TRADACOMS is an initial standard for EDI. Predominantly used in the retail sector of United Kingdom. This is similar to EDIFACT messaging system, involving ecs file for translation and validation of messages. The slight difference between EDIFACT and TRADACOMS is, 1. TRADACOMS is a simpler version than EDIFACT 2. There is no Functional Acknowledgment in TRADACOMS 3. Since it is just a business message to be sent to the trading partner, the various reference numbers at STX, BAT, MHD level need not be persisted in B2B as there is no Business logic gets derived out of this. Considering this, in AS11 B2B, this can be handled out of the box using Positional Flat file document plugin. Since STX, BAT segments which define the envelope details , and part of transaction, has to be sent from the back end application itself as there is no Document protocol parameters defined in B2B. These would include some of the identifiers like SenderCode, SenderName, RecipientCode, RecipientName, reference numbers. Additionally the batching in this case be achieved by sending all the messages of a batch in a single xml from backend application, containing total number of messages in Batch as part of EOB (Batch trailer )segment. In the case of inbound scenario, we can identify the document based on start position and end position of the incoming document. However, there is a plan to identify the incoming document based on Tradacom standard instead of start/end position. Please email to [email protected] if you need a working sample.

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  • HPCM 11.1.2.x - Outline Optimisation for Calculation Performance

    - by Jane Story
    When an HPCM application is first created, it is likely that you will want to carry out some optimisation on the HPCM application’s Essbase outline in order to improve calculation execution times. There are several things that you may wish to consider. Because at least one dense dimension for an application is required to deploy from HPCM to Essbase, “Measures” and “AllocationType”, as the only required dimensions in an HPCM application, are created dense by default. However, for optimisation reasons, you may wish to consider changing this default dense/sparse configuration. In general, calculation scripts in HPCM execute best when they are targeting destinations with one or more dense dimensions. Therefore, consider your largest target stage i.e. the stage with the most assignment destinations and choose that as a dense dimension. When optimising an outline in this way, it is not possible to have a dense dimension in every target stage and so testing with the dense/sparse settings in every stage is the key to finding the best configuration for each individual application. It is not possible to change the dense/sparse setting of individual cloned dimensions from EPMA. When a dimension that is to be repeated in multiple stages, and therefore cloned, is defined in EPMA, every instance of that dimension has the same storage setting. However, such manual changes may not be preserved in all cases. Please see below for full explanation. However, once the application has been deployed from EPMA to HPCM and from HPCM to Essbase, it is possible to make the dense/sparse changes to a cloned dimension directly in Essbase. This can be done by editing the properties of the outline in Essbase Administration Services (EAS) and manually changing the dense/sparse settings of individual dimensions. There are two methods of deployment from HPCM to Essbase from 11.1.2.1. There is a “replace” deploy method and an “update” deploy method: “Replace” will delete the Essbase application and replace it. If this method is chosen, then any changes made directly on the Essbase outline will be lost. If you use the update deploy method (with or without archiving and reloading data), then the Essbase outline, including any manual changes you have made (i.e. changes to dense/sparse settings of the cloned dimensions), will be preserved. Notes If you are using the calculation optimisation technique mentioned in a previous blog to calculate multiple POVs (https://blogs.oracle.com/pa/entry/hpcm_11_1_2_optimising) and you are calculating all members of that POV dimension (e.g. all months in the Period dimension) then you could consider making that dimension dense. Always review Block sizes after all changes! The maximum block size recommended in the Essbase Database Administrator’s Guide is 100k for 32 bit Essbase and 200k for 64 bit Essbase. However, calculations may perform better with a larger than recommended block size provided that sufficient memory is available on the Essbase server. Test different configurations to determine the most optimal solution for your HPCM application. Please note that this blog article covers HPCM outline optimisation only. Additional performance tuning can be achieved by methodically testing database settings i.e data cache, index cache and/or commit block settings. For more information on Essbase tuning best practices, please review these items in the Essbase Database Administrators Guide. For additional information on the commit block setting, please see the previous PA blog article https://blogs.oracle.com/pa/entry/essbase_11_1_2_commit

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  • Wiping out user and/or root password in embedded linux

    - by TryTryAgain
    We have a security camera system running an embedded linux. It boots with Lilo as a bootloader and has no tty access once booted. I don't know any username either. SSH/22 is open, but I don't think brute force is an option. I have tried all the common tricks to reset a linux user password (boot from the bootloader in single user mode = doesn't happen, still prompts for user login, boot to a live cd = can't access the file system...it's all loop files and other binary, etc etc), but they are all not possible as it is an embedded linux setup the way it is. Any help/suggestions would be appreciated. Thanks

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  • ubuntu 12.04 copy whole server

    - by Jiechao Li
    all. My company host all the software, including application and website in one local ubuntu server. But recently we start to use Amazon EC2, and want to move the whole server to cloud. Is there anyway to copy the entire server to EC2? OS is the same, ubuntu 12.04, and just one server, and one user account. On EC2 is also one instance, one account. I don't know whether there is a simple and quick way to do that. Thanks a lot!!

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  • Google and Yahoo redirect my site to malware, but direct url works fine. Any computer

    - by UserZer0
    I can go directly to the site doublewing.org or www. without issue, but if I click on the link in google or yahoo it redirects to spam sites. Swagbucks works though! This is not on a single computer this happens on systems isolated from each other(Try it, avast blocks it) . The site is runing joomla 1.5.25 . I deleted .htacces, put fresh index.php and index2.php files. and still get the same results. Any ideas?

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  • The Strange History of the Honeywell Kitchen Computer

    - by Jason Fitzpatrick
    In 1969 the Honeywell corporation released a $10,000 kitchen computer that weighed 100 pounds, was as big as a table, and required advanced programming skills to use. Shockingly, they failed to sell a single one. Read on to be dumbfounded by how ahead of (and out of touch with) its time the Honeywell Kitchen Computer was. Wired delves into the history of the device, including how difficult it was to use: Now try to imagine all that in late 1960s kitchen. A full H316 system wouldn’t have fit in most kitchens, says design historian Paul Atkinson of Britain’s Sheffield Halam University. Plus, it would have looked entirely out of place. The thought that an average person, like a housewife, could have used it to streamline chores like cooking or bookkeeping was ridiculous, even if she aced the two-week programming course included in the $10,600 price tag. If the lady of the house wanted to build her family’s dinner around broccoli, she’d have to code in the green veggie as 0001101000. The kitchen computer would then suggest foods to pair with broccoli from its database by “speaking” its recommendations as a series of flashing lights. Think of a primitive version of KITT, without the sexy voice. Hit up the link below for the full article. How To Use USB Drives With the Nexus 7 and Other Android Devices Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It

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  • Merge only a one remote branch into a local branch with Mercurial

    - by Pepijn
    I wan to manage some profiles as XML files in Mercurial repos. The setup I'm thinking of: Each user has a repo with a branch where he manages his own profile, and a number of branches where he can pull and merge other profiles from that branch of another user. So for example I have my own profile branch and a branch labeled friends, in which I want to pull the profile branches of a few remote repos, to collect like a collection of profiles. I figured out that since the repos are unrelated I need to use -f, but I can't figure out how to pull and merge only a single branch into another. So I want like me friend someone profile ---> friends <--- profile \-> family friends <--- profile Is this even possible? Should I use separate repos instead? Is there a better solution?

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