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tomcat 'document base does not exist' error (but it does)

- by SpliFF

Gentoo / Tomcat 6 INFO: Starting Servlet Engine: Apache Tomcat/6.0.20 Sep 8, 2009 10:34:51 AM org.apache.catalina.core.StandardContext resourcesStart SEVERE: Error starting static Resources java.lang.IllegalArgumentException: Document base /www/rivervalley/site does not exist or is not a readable directory at org.apache.naming.resources.FileDirContext.setDocBase(Unknown Source) at org.apache.catalina.core.StandardContext.resourcesStart(Unknown Source) at org.apache.catalina.core.StandardContext.start(Unknown Source) at org.apache.catalina.core.ContainerBase.start(Unknown Source) at org.apache.catalina.core.StandardHost.start(Unknown Source) at org.apache.catalina.core.ContainerBase.start(Unknown Source) oh really? then how come: ls -la /www/rivervalley/site/ drwxr-xr-x 12 tomcat tomcat 4096 Sep 8 09:56 . drwxr-xr-x 16 tomcat tomcat 4096 Jun 29 16:22 .. -rwxr--r-- 1 tomcat tomcat 520 Jul 3 02:15 Application.cfm drwxr-xr-x 2 tomcat tomcat 4096 Sep 8 09:56 WEB-INF and ... tomcat 18916 1.0 5.5 1159188 167892 ? Ssl 10:37 0:11 /opt/sun-jdk-1.5.0.18/bin/java -Djava.util.loggin Hell, ANY account can read that directory so the claim is utter nonsense. What else can cause this? Here's my relevant server.xml section: <Host name="rivervalley" appBase="webapps" unpackWARs="false" autoDeploy="false" xmlValidation="false" xmlNamespaceAware="false"> <Context path="" docBase="/www/rivervalley/site" /> </Host>

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I want a hyperlink to open a browser tab, then all subsequent link clicks go to the same tab

- by rossmcm

I suspect I'm out of luck on this one, but here goes... Say I have a CHM help file that has http:// hyperlinks embedded in the help pages. When the user clicks on a hyperlink of the style: <a href="http://www.example.com" target="_blank">click here!</a> a browser window is opened and the target web page is displayed. If a browser is already open a new tab is created and the target displayed in that. If the user clicks on another link (or the same link) another browser window/tab opens, and so on. Is there any way I can force all clicks of the links to go to the same tab/browser window?

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How can I change a specific website's style?

- by Darthfett

I have a specific website I often use (specifically, http://www.pygame.org/), which has an awful color scheme. I would like to change the color scheme of the site, but I haven't been able to find a good tool for the job. Some basic requirements: It should not be universal to all websites, or affect other websites. I want this to be semi-automatic. I don't want to have to re-define the theme for each page of the site. I want to continue to access the site online (I don't want a local copy of the entire site) Not OS-specific (browser-specific is okay) I am currently using Firefox, but I am also happy with Chrome. There may be some limitations on what is able to be done automatically, as the CSS seems to be embedded in the HTML (and some also in the HTML tags). I would like to remove as much of the green as possible. Is there an existing extension/add-on that does this?

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My yum repository able to search packages, but not able to install it in RHEL?

- by mandy

I set up yum from dvd. Following is the containts of my .repo file: [dvd] name=Red Hat Enterprise Linux Installation DVD baseurl=file:///media/dvd enabled=0. I'm able to search packages. However while installation I'm getting below error: [root@localhost dvd]# yum install libstdc++.x86_64 Loaded plugins: rhnplugin, security This system is not registered with RHN. RHN support will be disabled. Setting up Install Process Nothing to do My Yum Search output: [root@localhost dvd]# yum search gcc Loaded plugins: rhnplugin, security This system is not registered with RHN. RHN support will be disabled. ============================================================================= Matched: gcc ============================================================================= compat-libgcc-296.i386 : Compatibility 2.96-RH libgcc library compat-libstdc++-296.i386 : Compatibility 2.96-RH standard C++ libraries compat-libstdc++-33.i386 : Compatibility standard C++ libraries compat-libstdc++-33.x86_64 : Compatibility standard C++ libraries cpp.x86_64 : The C Preprocessor. libgcc.i386 : GCC version 4.1 shared support library libgcc.x86_64 : GCC version 4.1 shared support library libgcj.i386 : Java runtime library for gcc libgcj.x86_64 : Java runtime library for gcc libstdc++.i386 : GNU Standard C++ Library libstdc++.x86_64 : GNU Standard C++ Library libtermcap.i386 : A basic system library for accessing the termcap database. libtermcap.x86_64 : A basic system library for accessing the termcap database. Please guide me on this, I want to install gcc on my RHEL.

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DOS application to allow remote management of files over serial link

- by tomlogic

Harken back to the days of DOS. I have an embedded DOS handheld device, and I'm looking for a tool to manage the files stored on it. I picture an application I can launch on the device that opens COM1 up for commands to get a directory listing, send/receive files via x/y/zmodem, move/delete files, and create/move/delete directories. A Windows application can then download a recursive file listing and then manage those files (for example, synchronizing with a local directory). Keep in mind that this is DOS -- 8.3 filenames, 640K of RAM and a 19200bps serial link (yuk!). I'd prefer something with source in case we need to add additional features (for example, the ability to get a checksum of a file for change detection). Now that I've written this description, I realize I'm asking for something like LapLink or pcAnywhere. Norton no longer sells DOS versions of pcAnywhere and LapLink V for DOS seems pricy at $50. Are you aware of any similar apps from those good old days?

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Is it possible to install Photomatix under wine?

- by chris

Is it possible to install Photomatix under wine? I'm running Ubuntu 9.04, and I've tried both the default download and the embedded .net version. The first attempts to install the .net framework 1.1, and fails, while the 2nd appears to install but won't run. After a bit of googling, er, binging, I tried adding the .net 2.0 runtime via winetricks, and now it appears to install OK, but still won't run - either from the wine menu, or from the command line. Is it possible? What do I need to do?

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Large scale file replication with an option to "unsubscribe" from a replicated file on a given machine

- by Alexander Gladysh

I have a 100+ GB files per day incoming on one machine. (File size is arbitrary and can be adjusted as needed.) I have several other machines that do some work on these files. I need to reliably deliver each incoming file to the worker machines. A worker machine should be able to free its HDD from a file once it is done working with it. It is preferable that a file would be uploaded to the worker only once and then processed in place, and then deleted, without copying somewhere else — to minimize already high HDD load. (Worker itself requires quite a bit of bandwidth.) Please advise a solution that is not based on Java. None of existing replication solutions that I've seen can do the "free HDD from the file once processed" stuff — but maybe I'm missing something... A preferable solution should work with files (from the POV of our business logic code), not require the business logic to connect to some queue or other. (Internally the solution may use whatever technology it needs to — except Java.)

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Utilities for finding x/y screen coordinates

- by slothbear

I have an application that needs the user to enter the x and y location of a couple of items on the screen. [Yes, this is crap and I'll replace it, but for now...] On Mac OS X, I'm using Snapz Pro X. When I choose to take a snap of a selection, the interface displays the mouse cursor location. This is OK for my personal use, but I can't ask users to buy a $69 program for this function. I thought I had a solution with the built-in program "Grab", but it reports the coordinates from the bottom left, and I need it from the top left. I don't have access to Windows; not sure what to use there. I've not even been able to come up with good search terms since mouse and coordinates and x/y are so common. Ideas are welcome there. Extra credit: same x/y finder for Linux. A Java program would be OK too, since the main application is in Java.

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How do I configure hardware raid in a Poweredge 2850?

- by Eric Fossum

I just bought a Dell Poweredge 2850 from Craigslist and for the most part I'm happy with it's $300 price-tag, but I cannot figure out where to configure the embedded hardware raid... I've seen online you should hit <CTRL-M>, but while booting my box never says that. I have <CTRL-A> (I think) for an LSI Logic config, but that seems to just program SCSI and verify drives on my SCSI-A and SCSI-B. Anyone have a clue where this RAID config is?

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Transferring to a SSD using Windows Explorer?

- by Nick

I've just bought a new SSD (regretting this already) which I want to make my primary hard drive on my new computer. It's a fresh Windows 8 install, so I'm wondering if I can just copy the entire contents of C: onto my new SSD drive, or will I need to copy other things too such as boot records? I don't have a CD drive unfortunately (I removed it to put in the SSD - it's a very small HTPC) and I don't have any USB stick to make a bootable copy of Clonezilla or similar. UPDATE: I have decided to re-install Windows 8 from scratch onto the SSD, the problem is obtaining the serial key that is embedded into the BIOS. I actually have a spare, unused product key from my desktop I'm writing on now, but I'd rather not use that when I already have a valid key in my new HTPC :( Thanks :)

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Linux foxboard network monitor

- by het.oosten

I want to use a Foxboard a simple network monitor for multiple routers (all routers are connected to the internet). Foxboard is a mini pc with an embedded version of Debian. My idea is to use multiple virtual network devices like this: eth0 192.168.2.10 eth0:1 192.168.3.10 eth0:2 192.168.4.10 I found a nice Python script to ping an external host here (the solution from Ryan Cox): http://stackoverflow.com/questions/316866/ping-a-site-in-python Is it possible to configure Debian to use eth0 when I ping www.site-a.com and eth0:1 when I ping www.site-b.com?

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Relevance and Necessity of SNMP

- by Adam Tannon

Edit: I am in the process of designing a Java-based monitoring tool that will send back periodic "health checks" of a Java app deployed to a cluster of GlassFish servers. I am trying to figure out the best protocol for this monitoring tool to send information back to the monitoring server on. After an initial research effort on my part, it seems like SNMP is just a protocol for monitor-type applications to communicate the "health status" of something (a part of a network, a server, a cluster, an application, etc.) to the rest of the network. If the above is incorrect, please correct me!!! Assuming the generalization is more or less accurate, my next question is: why is this a protocol!?!? In the age of REST/SOAP/TCP protocols, why is there the need for a standardized protocol that only fits one type of application (monitoring)? In other words, if I'm a developer assigned to building a new monitoring tool that periodically polls a server and reports on its CPU and available memory, what advantages does SNMP give me over just POSTing to a RESTful API via plain 'ole HTTP? I'm sure I'm missing something here - I just need someone to help connect the dots! Thanks in advance!

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IPv4 NameVirtualHost, IPv6 VirtualHost

- by MadHatter

Like many of us, I have an apache server (2.2.15, plus patches) with a lot of virtual hosts on it. More than I have IPv4 addresses, to be sure, which is why I use NameVirtualHost to run lots of them on the same IPv4 address. I'm busily trying to get everything I do IPv6-enabled. This server now has a routed /64, which gives me an awful lot of v6 addresses to throw around. What I'm trying to find is a simple way to tell each v4-NameVirtualHost that it should also function as a VirtualHost on a unique ipv6 address. I really, really don't want to have to define each virtual host twice. Does anyone know of an elegant way to do this? Or to do something comparable, in case I've embedded any dangerously-ignorant assumptions in my question?

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Embed Powershell prompt in Windows 7 desktop

- by EricRRichards

On Linux (last time I did this was with Compiz on Ubuntu 11), I like to have a transparent console window anchored to the desktop, so I can get to a shell just by clicking out of whatever I'm doing and don't have to play with with moving/resizing windows. I'd like to do something similar on Windows 7/Server 2008. I could probably write up a quick little app in .Net that would run fullscreen and have a powershell terminal embedded in it, but, if somebody has already created something sufficient, or there is some other hackery to do this, I don't want to reinvent the wheel. Another possibility could be a Quake-style pulldown console, similar to Guake (guake.org).

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Disable Control-L hotkey on YouTube

- by Heptite

I am used to using Ctrll to access my address bar. Unfortunately YouTube "helpfully" defines Ctrll as a hotkey to jump forward several seconds in the currently playing video, so I need a way to stop YouTube from adding that key binding. A Greasemonkey/Scriptish userscript that disables the binding after page load would be acceptable. To be clear, this is while I am on a YouTube video's page, not on a third-party site that has embedded a YouTube video, and the behavior occurs when the Flash player does not have focus. Note: I am aware that Altd does the same as Ctrll in Firefox, but I'm too used to Ctrll and I'd rather not be forced to switch. Edit: OS-specific solutions are less desirable since I use multiple OSes; in-browser solutions are preferred.

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UTF-8 locale portability (and ssh)

- by kine

I spend a lot of my time sshed into various machines, all of which are different (some are embedded, some run Linux, some run BSD, &c.). On my own local machines, however, i use OS X, which of course has a userland based on FreeBSD. My locale on those machines is set to en_GB.UTF-8, which is one of the available options: % echo `sw_vers` ProductName: Mac OS X ProductVersion: 10.8.2 BuildVersion: 12C60 % locale -a | grep -i 'en_gb.utf' en_GB.UTF-8 Several of the more-capable Linux systems i use appear to have an equivalent option, but i note that on Linux the name is slightly different: % lsb_release -d Description: Debian GNU/Linux 6.0.3 (squeeze) % locale -a | grep -i 'en_gb.utf' en_GB.utf8 This makes me wonder: When i ssh into a Linux machine from my Mac, and it forwards all of my LC_* variables with that 'UTF-8' suffix, does that Linux machine even understand what is being asked of it? Or is it just falling back to some other locale? In either case, what is the mechanism behind its behaviour, and is it dependent on any particular set-up (e.g., will i see the same behaviour on a BusyBox-based system as on a GNU-based one)?

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Is it possible to have Grub2's boot.img in the MBR and have it load core.img from a separate boot pa

- by wesley

I have a multiboot system that I would like to use Grub to manage. The version of Grub shipping with my Linux distro is Grub2, and it installs its equivalent of stage 1.5-2, core.img, into the remaining sectors on the first track after the MBR but before the first partition. Unfortunately, those sectors are needed by another program. I have a separate primary /boot partition. If I could only keep boot.img as my MBR but have it look in the /boot partition for core.img rather than the embedded one in the sectors immediately following the MBR, everything would work fine. Is this possible with grub2?

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Mysterious swap usage on EC2

- by rusty

We're in the middle of a project to move our infrastructure from a co-lo situation into Amazon EC2 and we've noticed some weird memory characteristics of the processes in our setup. Without going into too much detail about the specifics of our processes, we've noticed that on our EC2 instances "top" will show processes using a lot of swap space -- in fact, much greater than the amount of available swap or (if you add it all up) more than the available disk. Here's a sample top output: Mem: 7136868k total, 5272300k used, 1864568k free, 256876k buffers Swap: 1048572k total, 0k used, 1048572k free, 2526504k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ SWAP COMMAND 4121 jboss 20 0 5913m 603m 14m S 0.7 8.7 3:59.90 5.2g java 22730 root 20 0 2394m 4012 1976 S 2.0 0.1 4:20.57 2.3g PassengerHelper 20564 rails 20 0 2539m 220m 9828 S 0.3 3.2 0:23.58 2.3g java 1423 nscd 20 0 877m 1464 972 S 0.0 0.0 0:03.89 876m nscd You can see, for instance, that jboss is reportedly using 5.2 gigs of swap space which is definitely impossible since there's only 1G allocated and none is being used (probably because there's still 1.8G of RAM free). And here's the results of uname -a: Linux xxx.yyy.zzz 2.6.35.14-106.53.amzn1.x86_64 #1 SMP Fri Jan 6 16:20:10 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux We're running an AMI based off of the default Amazon Linux AMI (Amazon Linux AMI release 2011.09, so some RHEL5 and RHEL 6) with not too many customizations and definitely no kernel-level customizations. Something here tells me that on this particular kernel/distribution, the reporting of swap or maybe even total memory usage isn't what it appears to be... Any help would be appreciated!

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Deleting sender from Outlook Safe Senders using GPO?

- by Hutch

We're having an external company do a mailshot to our users. The message contains images that are linked rather than embedded in the image (bandwidth isn't an issue). So of course on recent versions of Outlook you're prompted to download the images, not the end of the world, but it would be nice if that didn't happen. There's a bug in the Office/Outlook ADM/ADMX templates that means that a custom list of Safe Senders won't import unless you follow this: http://support.microsoft.com/kb/2252421 Thing is, if I remove an entry from the Safe Senders file, it doesn't seem to remove it from Outlook, which seems odd?

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Lotus Notes won't open a hyperlink/uri in a browser!

- by Andy O

I'm still new to Lotus, but I have LN 8.0.2, and have it set up to open hyperlinks "using the browser i have set as the default for this operating system" which in my case is Firefox 3.6.13. If I try to select "use the browser embedded in this client" then it just forgets it after I click save (ie if i go back into preferences it's reset to the default for this operating system option) Windows XP SP 3. Whenever I click on a link in an email...memo... then it does nothing and flashes an underscore underneath it. It's so basic and so annoying there must be something I'm missing. Any help please!

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Dynamic authentication realms in Apache

- by Cogsy

I have a front end server acting as a gateway proxy for many (a dynamic 'many') building monitors with embedded webservers. They are accessed with a URL like: http://www.example.com/monitor1/ http://www.example.com/monitor2/ ... I'm trying to restrict access to these monitors to only the users that own them. So what I need is a way of specifying rights to users or groups for specific directories. The standard auth mechanisms I see in Apache won't work because I need to specify every location. I'd prefer some dynamic map or script. Any suggestions?

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Need information on a filesystem error:

- by abc

I have console access to an embedded linux device. This device has flash memory part of which is partitioned as a FAT filesystem. Its running linux-2.6.31. However I am seeing these errors on the console these days and the FAT file system becomes read only. 111109:154925 FAT: Filesystem error (dev loop0) 111109:154925 fat_get_cluster: invalid cluster chain (i_pos 0) 111109:154925 FAT: Filesystem error (dev loop0) 111109:154925 fat_get_cluster: invalid cluster chain (i_pos 0) I cannot understand why this happened? What is the root cause? And what is the fix? I would appreciate answers that can point me how to investigate the possible root cause of this issue on the device.

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writting becomes slow after few writes

- by user1566277

I am running an embedded Linux on arm with a SD-Card. While writing huge amounts of data I see bizarre effects. E.g, when I dd a 15 MB file few times, it writes the file (normally) in less than 2 Secs. But After lets say 3-4 times it takes sometimes 15 to 30 Seconds to write the same file. If I sync after writing the file, then this does not happen but sync takes long time too. If there is enough gap between writing two files than presumably kernel syncs itself. How can I optimize the whole performance so that write should always finish inside 2 Seconds. The File system I am using is ext3. Any pointers?

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I know this is a stupid question but... How many websites can my server potentially hold?

- by Daniel Kindler

Sorry for the "noob" question, but... About how many medium-sized websites with average traffic could this server hold? Just like the average website, kind of like a small business site. How many sites could this server hold, but still maintain nice, decent speed? PowerEdge R510 PE R510 Chassis for Up to Four 3.5" Cabled Hard Drives, LED edit Processor Intel® Xeon® E5630 2.53Ghz, 12M Cache,Turbo, HT, 1066MHz Max Mem edit Memory 8GB Memory (4x2GB), 1333MHz Single Ranked UDIMMs for 1 Procs, Optimized edit Operating System SUSE Linux Enterprise Server 10, SP3, Up To 32 CPU Lic, 1 YR Sub, DIB, Media edit Red Hat Enterprise Linux Licensing Hard Drives 250GB 7.2K RPM SATA 3.5" Cabled Hard Drive edit Hard Drives 1TB 7.2K RPM SATA 3.5" Cabled Hard Drive edit Hard Drives 2 X 2TB 7.2K RPM SATA 3.5in Cabled Hard Drive Hard Drive Configuration No RAID, Embedded SATA Controller for x4 Chassis edit Power Supply 480 Watt Non-Redundant Power Supply edit Thank you!

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Suggestions for cleaning up the mess after removing the "system tool" virus?

- by Ross

Hi! Last night I got infected with the "System Tool" virus. For those who don't know it disallows the user from executing any software, changes the desktop, stops all security software from running, and continually requests that you buy a Trojan security software. It took me a few hours but I finally managed to remove the software. To do this I went into my Ubuntu partition and searched out files that had been created around the time that I got infected and deleted the executable. Then I went back into my W7 partition and ran an MBAM full scan, an MSE full scan, an AVG bootable USB scan, and ran a ClamAV scan from my Ubuntu partition (Together these found 3 more infected executables). I also ran a Ccleaner full sweep and the registry cleaner just in case. I think I have found all of the problems but am still concerned that there might be a payload leftover from the virus that I didn't find. Do you have any suggestions of what else I can do to be sure. Just FYI I use W7 64 bit and MSE as my primary antivirus. I was using chrome when I got infected and it seems that it was due to a slightly out of date Java installation (MSE gave me a warning that the website had used a Java exploit and then my desktop changed to the classic "System Tools" desktop) Thank you very much for your help.

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