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• Free java hosting?

  - by user24729

  Could anyone tell me some free hosting on which I can run my java web application even for a day? I don't want free forever. Free for 2-3 days will be fine I searched a lot on net but couldn't find anything. I just have some .html pages and some servlets in my java web application.

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• Is there a software package that safely allows SSH via web on simple web host?

  - by spoulson

  I want to be able to use a secured web page on my shared web host to make SSH connections out to any destination. A shared web host is cheap and easy to maintain, and usually allows ssh to the web server. There are times I'd like to ssh into my web server, but don't have direct ssh connectivity. I'm aware of consoleFISH, Ajaxterm, and Anyterm. The problem is consoleFISH is a man-in-the-middle by design, and Ajaxterm/Anyterm require running a daemon process on the hosting server. Web hosts can usually support cron jobs, but not continuously running daemon processes. Additional Apache modules are usually out, too, as they require reconfiguration of the server and affects all other customers. Are there any software packages out there I can run on my shared web hosting account that provide a true ssh experience with these limitations?

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• Nginx Redirection Issue

  - by James Gu

  My Nginx setting currently has this: location / { if (!-e $request_filename){ rewrite ^/(.*)$ https://domain.com/index.php?id=$1 redirect; } } Basically for non-existing pages (404) it redirects user to the home page. But now I have a wordpress blog setup at https://domain.com/blog/, but any wordpress items eg. https://domain.com/blog/test also got redirected to the home page. I wonder how to fix this?

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• Creating a DJVU file from scanned BMPs

  - by Freddie Witherden

  Recently I have been scanning some of my hand written notes. Each page ends up as a .bmp file (300 DPI A4). I wish to combine/compress these too a DJVU file for easy reading. Hence, Does anyone know of any programs/utilities for OS X/Linux that can do this. If so, what settings can be considered optimal (lined paper, some coloured ink used). Are there any practical means of tagging pages/regions (to create an outline).

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• Windows Vista - behavior with RAM minimum

  - by benc

  I am considering creating a Vista install, in VirtualBox, in a minimum configuration. The Microsoft pages seem consistent on the most important points: 1 GB of system memory 40 GB hard drive with at least 15 GB of available space 128 MB of graphics memory (minimum) In my experience sometimes these recommendations are accurate. (For example, I have a Windows XP in VirtualBox that generally behaves well running in the stated minimum). If anyone has some practical experience (especially the type that could save me hours of pain), please let me know.

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• PHP has encountered an Access Violation at ***

  - by JT

  Win 2003, PHP 5.2.1 and IIS 6. I have PHP configured as ISSAPI and it is serving PHP pages. When I try a page that requires MySQL I am getting just: PHP has encountered an Access Violation at (and a RANDOM number) What is all. Google has not provided me with results that help me fix. Does anyone have any thoughts?

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• Why change net.inet.tcp.tcbhashsize in FreeBSD?

  - by sh-beta

  In virtually every FreeBSD network tuning document I can find: # /boot/loader.conf net.inet.tcp.tcbhashsize=4096 This is usually paired with some unhelpful statement like "TCP control-block hash table tuning" or "Set this to a reasonable value." man 4 tcp isn't much help either: tcbhashsize Size of the TCP control-block hash table (read-only). This may be tuned using the kernel option TCBHASHSIZE or by setting net.inet.tcp.tcbhashsize in the loader(8). The only document I can find that touches on this mysterious thing is the Protocol Control Block Lookup subsection beneath Transport Layer in Optimizing the FreeBSD IP and TCP Stack, but its description is more about potential bottlenecks in using it. It seems tied to matching new TCP segments to their listening sockets, but I'm not sure how. What exactly is the TCP Control Block used for? Why would you want to set its hash size to 4096 or any other particular number?

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• How to prevent majestic 12 from indexing a site

  - by matnagel

  We experience a lot of traffic and server load on a web server. All I can find out is majestic12 accessing pages all the time. I wonder how I can prevent majestic12 from indexing the site Do they respect any robots.txt entry and how do I write such an enty?

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• IE9 freezes with Protected Mode enabled

  - by Peter Wone

  After a disk failure and a new build of Win7, IE9 locks up on most web pages including Bing. Running it as Admin works, and turning off Protected Mode also works. Neither of these was necessary prior to the rebuild and examination of colleagues' workstation config show that it's only my workstation with this quirk. Can anyone suggest a remedy? I have tried bcdedit /set {current} nx AlwaysOff and a reboot, with no effect.

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• How do web browsers display progress bars if they don't know the file size?

  - by Mark

  I'm writing a download manager, and I've noticed that all the web pages I've encountered don't seem to set the ContentLength header, whereas other media types (images) do. However, when I load a page (in Firefox), I get a progress as it loads. What's that based off if not file size?

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• Security and encryption with OpenVPN

  - by Chris Tenet

  The UK government is trying to implement man-in-the-middle attack systems in order to capture header data in all packets. They are also equipping the "black boxes" they will use with technology to see encrypted data (see the Communications Data Bill). I use a VPN to increase my privacy. It uses OpenVPN, which in turn uses the OpenSSL libraries for encrypting data. Will the government be able to see all the data going through the VPN connection? Note: the VPN server is located in Sweden, if that makes a difference.

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• Windows Server 2008 R2, IIS 7.5, Windows Authentication

  - by nick

  Ive a 7.5 IIS installed on my server with windows authentication enabled cause i need it for NTLM / SSO on intranet pages. when windows authentication is activated, iis cant authenticate himself on his own webserver.. thats the error i got in the iis log: 2011-11-24 08:47:10 10.50.2.91 POST /ldap.php - 80 - 10.50.2.91 SWIFT_LoginShare 401 2 5 0 so.. how can i make sure, using windows authentication, that iis authenticates himself? thx for your help

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• dhclient and dhcpcd the real difference

  - by rubixibuc

  I can't figure out the difference from just the man pages. I can see what is a daemon and one is a client, but what does that mean practically when using the commands? Also what is the difference between the client and daemon in this case, not just the terms (client and daemon) but functionally wise? EDIT: How are the tasks divided, if the client updates the information on the client, what is the purpose of the daemon. I'm talking about the client daemon in this case dhcpcd not dhcpd. Both come installed by default with some versions of Linux and seem to share the duties of the dhcp client. NAME dhcpcd - DHCP client daemon Name dhclient - Dynamic Host Configuration Protocol Client

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• How should I capture Linux kernel panic stack traces?

  - by Alnitak

  What's current best practice to capture full kernel stack traces on a Linux system (RHEL 5.x, kernel 2.6.18) that occasionally panics in a device driver? I'm used to the "old" SunOS way of doing things - crash dumps get written to swap, and on reboot the dump gets retrieved in the local file system. man 8 crash refers to diskdump, but that appears to be unsupported. and/or deprecated. I've played with kdump, but it's unclear whether I can get a stack trace from that. Triggering a panic via Magic SysRq didn't create one. It also seems wasteful to reserve so much memory (128MB) just for a kexec crash recovery kernel.

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• How to migrate KVM based VMs running in LVM setup to Vmdk images

  - by Bond

  I am using KVM on Ubuntu Server 10.04. and Virtual Machines are running on it in LVM. I have to migrate some of them to Vmware server.How can I achieve this? I searched and came across some links but they all talked converting vmdk images to qcow or so.In this case I have OS in LVM. I also looked at man page of qemu-img and as I understand it should do what I am asking in this thread. But how exactly should I proceed in this case.Since it is not a file based image (OS running in an LVM which has filesystem in that LVM). So I am not able to understand what should I be doing to achieve the same. Can I achieve the above with snapshots of LVMs rather than shutting down the VM itself.

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• NFC SDcard available in stores anywhere?

  - by Joqn

  In recent years, several companies announced SDcards adding NFC communication to smartphones: http://www.engadget.com/2010/03/16/first-data-and-tyfone-announce-partnership-for-nfc-payments-by-m/ http://www.digitimes.com/supply_chain_window/story.asp?datepublish=2011/06/27&pages=PR&seq=200 However, I cannot find any online store that would sell such a card. Any ideas, or did they all not make it to market?

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• When to use delaycompress option in logrotate?

  - by Anand Chitipothu

  The man page of logrotate says that: It can be used when some program cannot be told to close its logfile and thus might continue writing to the previous log file for some time. I'm confused by this. If a program cannot be told to close its logfile, it will continue to write forever, not for sometime. If the compression is postponed to next rotation cycle, the program continues to write to that file even after the next rotation cycle. How is postponing solving the problem? My understanding is that copytruncate should be used when a program cannot be told to close the logfile. I'm aware that some data written to the logfile gets lost when the copy is in progress. I was looking at the logrotate file for couchdb, and it had both copytruncate and delaycompress options. /usr/local/couchdb-1.0.1/var/log/couchdb/*.log { weekly rotate 10 copytruncate delaycompress compress notifempty missingok } It looks like there is no point using delaycompress when copytruncate is already there. What am I missing?

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• How do I prevent ConEmu auto-attaching to every single cmd.exe?

  - by naxa

  I don't want ConEmu to attach to every cmd I open, but this is how it works now. I remember that I told ConEmu to do this, but I don't want it anymore. Maybe I just overlooked something, but I've read all the settings pages and I couldn't find an option to disable it. Am I missing something? How do I prevent ConEmu from attaching every single cmd.exe I open? My ConEmu version is 121109 x86, on winXPproSp3x86.

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• How to perform "tracert" like operation from browser?

  - by user329777

  I'm remotely investigating issue with my friend's WIN XP computer. The browsers (Chrome and IE) won't show any pages but message with err_connection_reset in details. I've tried to perform "telnet google.com 80" and send there "HEAD / HTTP/1.0" from console and everything went fine, but browsers refused to give me anything. I've checked for presence of firewalls and proxy servers in the settings, but nothing seems to be there. What else to check?

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• dhclient append settings from multiple DHCP servers

  - by Brian

  I have a server with two interfaces connected to two separate networks, using DHCP for both. When dhclient is writing /etc/resolv.conf, I would like it to append settings that aren't already there. For instance, if I receive from one DHCP server: nameserver 10.0.0.1 search one.mydomain.com and from another: nameserver 10.1.1.254 search two.mydomain.com Then resolv.conf should look like this: search one.mydomain.com two.mydomain.com nameserver 10.0.0.1 nameserver 10.1.1.254 At the moment, it seems the last dhclient overwrites whatever was there. I know I can preconfigure settings in dhclient.conf using supercede or append, but then I have to hard-code the values. I've scoured the man page for dhclient, but it seems like dhclient prefers to work alone (i.e. not in conjunction with any other dhclients)...or am I missing something?

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• When running Adobe Acrobat's OCR on a PDF document, which downsampling produces a higher quality: 600 dpi or 72 dpi?

  - by Ricardo Altamirano

  I have a large PDF document that consists of scanned pages of a textbook. I want to run Adobe Acrobat 9's text recognition function on it, but I'm presented with this menu when I do. I'm confused by the options in the highlighted menu. What option will produce the highest quality/most readable text? I thought 600 dpi implies a higher quality image than 72 dpi, so I'm confused by "High (72 dpi)" and "Lowest (600 dpi)."

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• I cannot stay logged in to a site with my router

  - by Luke101

  I have a D-Link home router and my isp is Time warner. When I try to login to any site it does not let me. The website does not keep me logged in when I navigate the pages. I have to keep loging in for every web page I see. When I connect my cable modem directly to my computer I am able to stay logged in. Any ideas here?

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• Fail-over caching reverse proxy

  - by sybreon

  Is there a way to configure varnish or any other caching reverse proxy, to serve pages from its cache when the back-end fails? At the moment, if the back-end goes down a 503 Service Unavailable error would be returned to the browser. I would prefer it if visitors got to see a cached version than an error page while the back-end is being fixed. My setup: [varnish (public ip)] <=== [router] <=== [web server (private ip)] PS: I have only one back-end web server.

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• How to stop Chrome grabbing focus when opening a link from outside Chrome.

  - by ProfKaos

  When I catch up on tweets, I like to click interesting links and carry on reading my feed, while the pages linked to load. That worked fine in Firefox, but now in Chrome, whenever I click a link on a tweet, Chrome grabs the focus. This is driving me crazy. How can I stop this? I'm running XP SP3

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• txt file descriptor in lsof

  - by wfaulk

  In my experience, files that have the file descriptor of txt in lsof output are the executable file itself and shared objects. The lsof man page says that it means "program text (code and data)". While debugging a problem, I found a large number of data files (specifically, ElasticSearch database index files) that lsof reported as txt. These are definitely not executable files. The process was ElasticSearch itself, which is a java process, if that helps point someone in the right direction. I want to understand how this process is opening and using these files that gets it to be reported in this way. I'm trying to understand some memory utilization, and I suspect that these open files are related to some metrics I'm seeing in some way. The system is Solaris 10 x86.

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