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• How would I measure the amount of RAM needed per Glassfish domain? [closed]

  - by oligofren

  Possible Duplicate: Can you help me with my capacity planning? In our test environment we have a lot of apps spread out over a few servers and Glassfish domains. To make versioning easier I would have liked to have one Glassfish domain per customer per app (kind of like a heavyweight version of lots of jetty instances). But I have heard that Glassfish is kind of heavy on the resources, and so I would need to measure approximately how many instances would fit in the available RAM. These are low-traffic/low load testing servers, so CPU is not really an issue, though RAM might be. How would I get an approximate measure of how much RAM is needed? This is one Glassfish 3 instance with one heavy EAR application deployed. top? jvmstats? ??

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• Cutting up videos (excerpting) on Mac OS X -- iMovie produces super-large files

  - by markvgti

  I need to cut out parts of a video (+ the associated audio, of course) to make a short clip. For example, take 2 minutes from one location, 3 minutes from another part of the video, 30 seconds from another location and join it all together to form one single clip. The format of the input video is mp4 (H.264 encoding, AFAICR). Don't need very sophisticated merges or transitions from one part to the next, or sophisticated banners (text) on-screen, but some ability to do so would be a plus point. I've done this with iMovie in the past, but where the original file was under 5MB/min of play time, the chopped-up version was over 11MB/min of play time, which to me seems really bad. Is there a better/different way of doing this on OS X? Looking for free (gratis) solutions. OS: OS X 10.9.3

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• Creating user accounts in Amazon EC2

  - by Tvanover

  I am putting together a test environment using Amazon's EC2 for me and some friends to collaborate on a project. I am not a server guy but I do know my way around a bash prompt and have done some work on ubuntu before. I am using Amazon Linux AMI i386 EBS and have gotten apache and php running. Now I need to create the user accounts my friends and I will use to upload files (sftp) and work on the project (ssh). How should I go about this? Should I just use adduser and configure it like normal? Or should I use the AWS IAM groups?

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• Is there a way to sharpen low quality images

  - by Saif Bechan

  I have a lot of images for a project that are not really sharp and crisp. I think these were old images that were resized a lot etc. This is because I am working on a website for a client and she does not have the high quality pictures anymore, the pictures I have to work with are somewhat pixelated. Ill show you an example of one I think could be better: Now as you can see the parts around the text 'Azule' is not so sharp. Is there a way to sharpen this. Now I have another one, and I think there is no hope for this one. Is there any hope for the picture above to make it sharp again, I highly doubt it.

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• How to diagnose RAM?

  - by x-man

  I have a java process that is aborted after a while with SIGSEGV. It started to happen after I upgraded the server with more RAM. Having tested on different JVMs I suspect it might be a hardware problem. But no problem was detected by memtest86. So, what else can I do to detect the source of the problem is? Should I take the RAM modules one by one to detect the faulty module? The server is running on 64bit OpenSuse11.3. The memory is not an ECC one it seems. I have a kit of this (3*4GB * 2 = 24GB): http://www.kingston.com/datasheets/KHX1600C9S3K2_8GX.pdf

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• Win Server 2003 - Task Scheduler - Tasks with GUI and Services

  - by august_month

  I need to run excel macro daily. I scheduled it with Windows Scheduler and it worked fine until I had to change my password. I wonder if it's possible to have a task scheduled without a password? As alternative we have third party scheduling software, but this software cannot launch excel. The tech support said that since excel has gui and scheduling software runs as service with "Allow to interact to Desktop" disabled, it cannot launch excel. Also tech support mentioned that "Allow to interact to Desktop" is not supported as of Vista. I totally trust tech support guy, I just need a work around that would make my network administrator and me happy. Regards.

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• Windows 7 random black screen when idle

  - by Omar

  Occasionally, when I'm away from my computer for about 5 minutes, the computer screen will go black and all USB devices (keyboard/mouse) will lose power. Attempting to move the mouse or pressing keys does not 'wake up' the computer. This only started happening a few days ago but I'm not sure what changes I did could have caused this and I uninstalled programs (one by one) I installed before it started happening, but still having the same issue. The one thing I noticed different about my computer since it started happening is i've been getting random survey popups from www.insightexpress.com. I ran Microsoft Security Essentials scan, it picked up some Java related malware, I removed it but still the same issue. I'm running MBAM right now and will run SAS after. Edit: I just updated drivers for motherboard and video card and ran virus scans, still having the same issue.

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• Network Role based routing

  - by Steve Butler

  Apologies my networking skills are a tad rusty. I'm looking for a way to setup a system that gives me the ability to setup Role-based access to specific network resources. For example, i have three private subnets for specific groups, users will need access to one one or more subnets. I'd like to have all client machines on the same subnet/vlan, and then use 802.1x to authorize into a router(NAC device/whatever), the router would then see what user had authenticated(huge plus if it could determine AD group), and then allow routing to one or more of the three private subnets based upon their group membership. I've looked at packetFence, and it appears to work by assigning a client to a VLAN, but i'd still need a way to route some users into different back-end networks.

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• How best to integrate PPA into Debian?

  - by eicos

  I'm working with ZFS on Linux, on my Debian squeeze server. I've found a useful package in an Ubuntu PPA, apparently by one of the ZoL developers, and I would like to integrate it into my package system. However, I am really having a terrible time doing this. It seems like it would be possible if I upgraded my system to the testing branch, but I'd prefer not to do this for obvious reasons. So, what is the One True Way to do this? Or, what is a passable way to do this, i.e. one that does not involve an ice nine-like assimilation of my entire system to testing branch? Edit: Silly question. I clicked the little green "technical information about this package" on launchpad and all was revealed.

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• cisco vpn client randomly disconnects with pfSense

  - by Andre

  My network has two gateways, one is a pfSense box that everyone uses. The other one is a TP-Link firewall essentially for tests. Some machines inside my network need to access a VPN through the Cisco VPN client. If one of those machines is using the pfSense box as the gateway, I experience random connection drops on the VPN. If I am using the TP-Link gateway that doesn't happen. I've tried changing the MTU in the pfSense box and that improved things a little bit but didn't really solve the problem. I also followed the guidelines for traffic shaping in pfSense and the connections still drop quite often. Ideas?

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• Cannot read/write a second drive in MBP 13

  - by Carlos

  I changed my original HDD for a SDD earlier this year and I just got one more SSD for my MBP 13 (2012) that I used to replace DVD drive. I'm using Mountain Lion. The SSD looks to be recognized allright, but I can't format it. Then I removed the main drive and tried the new one as the main drive and did the boot using a USB drive with MAC OS and everyhing worked as it should (like I just had one drive). However when I bring the first drive back together with the second they both show up but I can't use it. Seems like I have no permission, but when I look at it's properties it says I can read and write to it. Any ideas? Thanks a lot!

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• Where can I get a splitter to connect a device with a single 3.5 mm plug into the audio input/output jacks on my laptop?

  - by XinJeisan

  I recently bought the :Hype Retro Handset for Mobile Phone" -- its just a device that looks like a handset to use when chatting on a computer or mobile phone that plugs into the phone/computer with a single 3.5 mm plug. I was hoping to use it on my windows 7 Toshiba laptop. I can hear audio fine through the handset but what I'm saying is not being picked up on the handset. On the box it says "some phones and computers may need additional adapters," so I'm hoping it is possible to get a splitter or something for this to work properly. I did email the parent company (http://dglusa.com/) but I haven't heard from them, and, looking over their website, I doubt I will. I also went to the local radio shack, and the guy said I needed a splitter, but he didn't know where to get one. I can find the kind of splitter I think I need online, but I'm unsure whether they are just for output or can also do input/output.

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• Is there a software that can remap the keys for a speficic keyboard?

  - by Vilx-

  There are several keyboards attached to my computer. I'd like to remap the keys on ONE of them, but keep the rest as they were. Is there a software that does this? As for the "why" - I have this idea that I'd like to have a "multimedia keypad" which is separate from my main keyboard, but I could not find any online. So I think that I could take a typical USB numpad (they cost like 5$), and remap the keys on one of them. Add appropriate stickers, and I'm all seat, cheaply. I know that it's theoretically possible, but before I get my hands dirty and write my own software, I'd like to see if there's maybe an existing one out there. Oh, yes, I'm running Windows 7.

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• Active Directory management with low user rights

  - by DemonWareXT

  Our problem: The client, a normal user, has to be able to reset multiple passwords at once. Around 30 in one go. This would call for powershell or something along these lines, but for AD and Powershell one needs to be domain administrator. My solution would be to make a service that runs on the AD server and take connections from a program. The service would then do the AD changes. So far so good, I would just like to hear some other thoughts on this problem. Because I sure can't be the only one with it

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• Set Thunderbird "from" address by incoming "to" address

  - by user293698

  I have configured my email server to cache all email to my mailbox. So [email protected] and [email protected] go to one mailbox. Every forum, registration, and guy get their own address for sending me emails so I can deliver it to /dev/null if anyone start spamming. That's the working setup. Now the problem: If I reply to a message, then Thunderbird always sets my default Identity as sender. I know I can add additional identities, but I don't want to add every address. How can I configure when a email is sent to [email protected], I answer with [email protected].

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• AppFabric named cache, what happens if you lose a cache host?

  - by Liam

  I'm getting my head around how app fabric clustering works and there's something I'm not sure about. Given a structure where we have one named cache, with two lead hosts and (say) three cache hosts and high availability turned off and the lead host(s) performing the management role. When one cache host goes down do you loose the data that was on that cache host? In this MSDN article it states: Data on the non-lead hosts would be lost (assuming high availability was not enabled), but the rest of the cluster could continue serving and storing data But I was unsure if redundancy is built into the system. Would you loose x amount of data or would one of the other cache hosts store this data also and pick up the slack?

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• What to do with old hard drives?

  - by caliban

  I have over 100+ old hard drives, ranging from 100MB Quantums to 200GB WDs, most of them PATA, some SATA. Most still working. The squirrel mentality runs in my family - hoard everything, discard nothing. Thus, and this is a relevant question - any suggestions on how to put these drives to use (anything) instead of them just being deadweights and space takers around the office? Hopeful objectives and suggestions to keep in mind when you post an answer : Should showcase your geekiness, or plain fun, or serve a social purpose, or benefit the community. You do not need to limit your answer to only one hard drive - if your project needs all 100++, bring it on! Your answer need not be limited to one project per hard drive - if one hard drive can be used for multiple projects, bring it on! If additional accessories need be purchased, make sure they are common. Don't tell me to get a moon rock or something. The projects you suggested should serve a utility, and not just for decoration purposes.

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• what is the meaning of *this* crontab setting?

  - by aXqd

  * */1 * * * sh foo.sh I found this setting on one production machine. And foo.sh was executed every one minute. I am guessing that the original author of this setting wants it to be executed every one hour. And I cannot find the official meaning of this setting in the crontab man page. Hence please help. UPDATE: I extracted these logs from that machine, however I cannot find the law out of them. 2013-06-29 20:47:01 2013-06-29 20:50:02 2013-06-29 20:51:01 2013-06-29 20:53:01 2013-06-29 20:54:01 2013-06-29 20:57:01 2013-06-29 20:58:01 2013-06-29 21:00:01 2013-06-29 21:05:02 2013-06-29 21:10:02

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• How to disable Empty Recycle Bin confirmation dialog?

  - by kjo

  In Windows 7 (at least) when one chooses Empty Recycle Bin from the RB menu, one gets prompted with a dialog like: Are you sure you want to permanently delete these 11 items? (modulo the actual number of items mentioned). Is there a way to disable this dialog (without disabling the use of the RB altogether)? NOTE 1: This dialog comes up even if one has unchecked the box labeled "Display delete confirmation dialog" in the RB Properties dialog (as long as the RB has not been disabled). NOTE 2: As alluded to above, any answer that entails disabling the use of the Recycle Bin altogether is explicitly ruled out. This includes any answer that involves selecting the button labeled "Don't move files to the Recycle Bin. Remove files immediately when deleted." in the RB Preferences window. NOTE 3: This question has nothing to do with Outlook Express.

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• If a change the CPU, must I reinstall the OS?

  - by dag729

  Hi, as suggested by the title, I want to change CPU: actually I have two computers, one with Ubuntu running on an AMD Athlon 64 dual core 5200+ and the other with FreeBSD running on an AMD Sempron single core LE-1250. I would like to swap (I am not sure that this is the correct term...) the CPUs from one computer to the other one, that is take the dual core from the ubuntu pc and put it inside the freebsd pc and viceversa. The mobo is the same. Do you think I will encounter problems?

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• What is the difference between yum, apt-get, rpm, ./configure && make install

  - by Saif Bechan

  I am new to Linux and am running CentOs. When I want to update or install certain software I came across three ways. Sometimes it's: yum install program rpm -i program.rpm wget program.tar.gz unpack ./configure make make install That last one is a real pain, esp when you come from windows where a program install is usually one click and then a nice guide. Now can someone please explain to me: Why are there so many different ways to do this? Which one do you recommend to use and why? Are there any other ways for installing programs?

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• Multiple subnets behind SonicWall TZ 180

  - by Derek

  We have a SonicWall TZ180 that acts as a VPN endpoint. Right now it has one WAN IP address and a /24 assigned to the LAN interface. Our mail cluster administrator asked if it was possible to add a second private class C behind the VPN. This second subnet would be available to the other network and then we would use address objects and acls to limit access. Is this possible? I read up on PortShield but I don't know if that's what we would need to use because we're pushing all data out of one physical port into a Cisco switch that has VLANs already set up. Addendum: It appears that PortShields will do what I want with only one limitation; it requires a direct 1-1 relationship of portshield to physical port. This would then limit us to 4 PortShields on 1 TZ180. Is there a better solution than this?

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• Partition falsly recognized as RAW

  - by Paul Hiemstra

  On my 2 TB data disk I have two primary partitions, one of 1.6 TB for data storage in Linux (ext3) and one of 300 GB for some additional data storage for Windows. I run a dual-boot Windows 7/Ubuntu 12.04 install. The issue I have that if I start my computer into Windows 7, bot the partitions on my 2TB data drive are not recognized. In stead, Windows 7 sees one 1TB partition with type RAW. However, if I reboot to Linux, and then back to Windows 7, the partitions are correctly recognized. The following two screenshots illustrate my situation. Before I reboot to linux: and after the reboot: I have two questions: What could cause this behavior? How can I solve this issue.

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• Audio switch with multiple 3.5mm input & outputs

  - by David Nguyen

  I've been searching for a device that simple allows me to pick one input and one output from multiple input/outputs. I thought this would be a called a switch but I can only find ones with one input. Is there such a device that can do this? I will be attaching various devices, i.e. multiple console sound, PC & Laptop inputs and outputting to my speakers or headphones. I'm looking for something small and simple. All inputs and outputs are 3.5mm.

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• is it possible in this case to get two IPv6 networks to communicate over the IPv4 Internet?

  - by user239167

  I have a setup of a laptop connected to a cellular IPv4 network (3G usb dongle) and PC connected to another IPv4/IPv6 network. Both have been configured to run as IPv6 routers and each has its IPv6 network. The laptop connects to the Internet via the 3G network with IPv4 address (private one and it is mostly changing) on one interface and has the other interface on AP mode providing its own private IPv6 network (2001:db8:444::/64). The PC connects to the Internet via the organization network with both public IPv4 and IPv6 addresses on one interface and has the other interface on AP mode providing its own private IPv6 network (2001:db8:222::/64). Both running Linux Ubuntu. Is it possible to get the two IPv6 network (2001:db8:222::/64 and 2001:db8:444::/64) to communicate over the IPv4 Internet? Is openvpn of any good in this case to get IPv6 traffic over IPv4-IPv4 tunnel? Thanks for helping in advance

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