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• Why are they putting "processors" on hard drives?

  - by Celeritas

  What does it mean when they have a processor on the hard drive, how does it work, and what benfit does it have? I don't understand - the CPU is the processor and the hard drive transfers it's contents to RAM. Do have additional processors, preprocess the data some how? Here's some examples Western Digital WD Black WD1002FAEX 1TB "Dual processor speed" NETGEAR ReadyNAS 312 2-Bay Diskless Network Attached Storage "Dual-core Intel 2.1GHz processor and 2GB on-board memory" and routers now have processors too, why's that nescecary? I guess it sort of makes sense - some logic needs to happen for the packets to be read in to know which ports to send them out on, but why did old routers not need them? Example or wireless router with processor: "Dual-core processor"

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• Oracle LogMiner (Unsupported Operation)

  - by Sarith

  Hi all, I'm currently using Oracle 11g on RHEL5. I'm digging to see what are in the archived log files. After I query from v$logmnr_contents, I see many transactions of UNSUPPORTED operation. What do these unsupported transactions mean? I think that it's the cause that make my database generates lots of archived logs. Moreover, I'm using global temporary table for generating reports. I discover that when I insert and delete from those temporary table, it also records in the archived log file. How to do to reduce those recorded transactions? Regards, Sarith

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• Virtual Windows desktop

  - by Zack

  Is there any virtual desktop software that can virtualize desktop just like a virtual desktop to sandbox (sort of like virtualization and sandbox combined). I want to create many desktop and each of them must be sandbox. For example if I have virus infected in one of the desktop, I just have to clear or close the desktop and everything is fine. Is there any software that can do that kind of jobs that I have mentioned? Remember I am not asking recommendation of software, but the software that can do the job. UPDATE: I mean that every virtual desktop is working as a virtual box or sandbox. Clearing or closing the desktop will work as shutting down that virtual box.

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• page allocation failure - am I running out of memory?

  - by mfriedman

  Lately I've noticing entries like this one in the kern.log of one of my servers: Feb 16 00:24:05 aramis kernel: swapper: page allocation failure. order:0, mode:0x20 This is what I'd like to know: What exactly does that message mean? Is my server running out of memory? The swap usage is quite low (less than 10%), and so far I haven't noticed any processes being killed because of lack of memory. Additional information: The server is a Xen instance (DomU) running Debian 6.0 It has 512 MB of RAM and a 512 MB swap partition CPU load inside the virtual machine shows an average of 0.25

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• What can I do to give some more love and disk space to my database on Ubuntu?

  - by Yaron Naveh

  I'm new to linux. I've deployed a db to ubuntu server on amazon and found out I'm low on disk space. did df (see below) - and found out that I'm 89% capacity on one file system, but less on others. What does this mean? Do I have a few partitions and can now utilize others besides /dev/xvda1? Also /dev/xvdb seems large, is it safe to put the db in it and only use it? If so do I need to mount it or do something special? $> df -lah Filesystem Size Used Avail Use% Mounted on /dev/xvda1 8.0G 6.7G 914M 89% / proc 0 0 0 - /proc sysfs 0 0 0 - /sys none 0 0 0 - /sys/fs/fuse/connections none 0 0 0 - /sys/kernel/debug none 0 0 0 - /sys/kernel/security udev 3.7G 8.0K 3.7G 1% /dev devpts 0 0 0 - /dev/pts tmpfs 1.5G 164K 1.5G 1% /run none 5.0M 0 5.0M 0% /run/lock none 3.7G 0 3.7G 0% /run/shm /dev/xvdb 414G 199M 393G 1% /mnt

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• Virtual memory on Linux doesn't add up?

  - by Brendan Long

  I was looking at System Monitor on Linux and noticed that Firefox is using 441 MB of memory, and several other applications are using 274, 257, 232, etc (adding up to over 3 GB of virtual memory). So I switch over to the Resources tab, and it says I'm using 462 MB of memory and not touching swap. I'm confused. What does the virtual memory amount mean then if the programs aren't actually using it. I was thinking maybe memory they've requested but aren't using, but how would the OS know that? I can't think of any "I might need this much memory in the future" function..

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• Laptop battery liftime from Dell specs?

  - by user26535

  Question: When I buy a Dell Laptop, I get the following choice for battery: (Lithium-Ion main battery with X cells and Y Wh [included in price/at additional $] Lithium-Ionen-Hauptakku mit 4 Zellen und 24 Wh [Im Preis enthalten] Lithium-Ionen-Hauptakku mit 9 Zellen und 85 Wh [zuzgl. CHF 120.01] Lithium-Ionen-Hauptakku mit 6 Zellen und 46 Wh [zuzgl. CHF 30.00 I figured that I can calculate that a 86 Wh offers +254% of the 24 Wh lifetime, but... Is there any way to calculate to what battery time this amounts in hours ? I mean how many hours will the 24 Wh last (at normal operation - eg. writing a document - not watching video), else the +254% is a pretty useless number... Also anybody knows whether 4 cells means 4 times 24 Wh, or 24 Wh in total?

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• Daemon/Software that takes changes from sql database and applies them to unix config files

  - by Dude Man

  I was wondering if there was a unix daemon available that would be capable of something like this: admin adds an IP entry to a DB; daemon finds change after wait interval and manipulates ifconfig/config files I was thinking maybe there is a plugin for cfengine that might be able to do this, but I couldn't find any. I mean this would be a fairly easy thing to script up in perl, but why re-invent the wheel if theres already something out there that is better than what my limited programming abilities can make. Lastly, if it worked on FreeBSD that'd be great.

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• Cisco Catalyst 65XX and traffic shaping

  - by Nadz Goldman

  Hello! I have Cisco Catalyst 65XX, many VLANs and about ~1300 users. Users connected to some D-Link switches with second-level management. D-Link switches come to my Cisco Catalyst 65XX by VLANs. So, how I can shape traffic per user? If I use something like this: access-list 145 permit ip any host 192.168.0.1 access-list 145 permit ip any host 192.168.0.2 access-list 145 permit ip any host 192.168.0.3 ... int Gi0/1 traffic-shape group 145 128000 7936 7936 1000 will I have shape traffic per user or it will shape traffic only on interface? I mean - every user will have 128kb/s (per user) or everybody will have 128kb/s ? If it will be for everybody, then what is the solution of my question: how every user can have 128kb/s ?

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• Run a pc on battery for 3 days?

  - by Zen 8000k

  I am looking for a low power, low end pc able to run 24/7 without overheating and a way to support it in case of power failure. Power failures can be up to 72 hours. The pc dosen't need a monitor or keyboard. A modem must also be protected in case of power failure. When i say low end, i don't mean crap. The cpu needs to be x86 and have at least 1k cpu in this chart: http://www.cpubenchmark.net/index.php What's the best way to do this?

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• Hardware Raid Card Reviews with SSDs

  - by Nalandial

  Yes I realize there are several questions about this but none of them seem to have the answer I'm looking for. I have two SSDs and am looking to buy a purely hardware raid card for them; however, I can't seem to find any reviews that have specifically tested hardware raid cards with SSDs rather than testing the SSDs themselves. I'm looking for a review because I'm assuming that for example: 100% gain with two 7200rpm drives doesn't necessarily mean 100% gain with a pair of SSDs, since there would be higher speeds, meaning more throughput, meaning more processor/memory usage for the card. If this assumption is wrong then that's fantastic; however if it's true, I am quite sad and would really appreciate any advice or reviews you can find. Thanks in advance!

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• Line numbering per paragraph in Word 2007

  - by WaelJ

  How can I use line numbering in Word 2007, but for each paragraph? (By line numbering I mean the one from Page Layout/Setup, not regular list numbering) So something like this: 1 Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. 2 Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat 3 Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat

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• Password rules for yppasswd

  - by gstoynev

  Hello all, I have a NIS master-slave setup and I would like to improve the password rules/complexity for it. Seems like if I introduce new rules to the NIS Master they are applicable only from there. What I mean: I want minimal password length of 9 characters. On the NIS master if I run 'passwd' it obeys this requirement. If I run 'yppasswd' it just go to the default 6 characters. If I use 'chage -d 0 user1' to force a user to change a password, the user is prompted only when login on the NIS Master. The user's old password is still good to login at NIS clients. All machines are running Ubuntu 9.10 or 10.04. How I can strengthen yppasswd rules and make it warn users to change their passwords? Thank you all!

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• VPN only connects to its server!

  - by Eddie

  Hi guys; Previously I bought a windows 2003 VPS and enabled routing and remote access so that users can make a vpn connection. I turend the firewall off and everything was working fine. But since 2 days ago whenever I try and connect to vpn it connects to vpn without any problem and I can see the connection status however it only connects to the server I mean what I can do with this vpn is to connect to the server via remote desktop and I can ping only the server's IP, neither I can open any webpages in browsers or ping other IP addresses beside the server one! I've also rebuilt the server and configured it for routing access and vpn connection from the beginning but it doesn't work either. It seems that server fails to route the traffic properly, as i'm sure that the firewall has been turned off I can't figure out what's the reason, any idea what's going on? Thanks in advance

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• How to fix wrong icons of the files in Windows XP SP3

  - by Angel_Kitsa

  Hi everybody, Recently I deleted some folders from *C:\Windows* directory with file names like this: $some_name_Uninstall$, which are the files of the patches, which were installed on the OS. It seems like my office placed the icons in some of those folders and now all xls and doc files have no icon. (I mean no Office icon) I couldn't find a solution for this till now. Please advice if someone had such problem and/or knows the solution. p.s. I have 7 years experience with Windows XP, so please don't ask me to do simple things like associate with files again or something like that. I tried a lot of things. Uninstall and install is not a way out. Thanks for any information!

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• Enter key on Mac OS X renames files instead of launching

  - by Matt

  On my Mac when I hit the "enter" key on a file on my desktop or in the finder, it enters the "rename file" mode. 1) How do you actually "launch" or "open" (i.e. double click) the file with only the keyboard? In Windows, the Enter key does this. 2) Is there a way to map the Enter key to do this in Mac instead of rename? Honestly, it makes little sense to me. I mean, how often do you rename something? Once, maybe. How often do you open something? Lots and lots of times.

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• What is the simplest way to build your own .deb package?

  - by Calvin Fisher

  Having used Ubuntu for several years now, I've assembled a short list of scripts and packages that I always install on my computers. I would like to pack them up into a .deb to make it easier to get set up on a fresh OS installation. I'm imagining, for instance, one package that would install all of my custom BASH scripts that I've made for common tasks, and another one that would depend on other packages (like w64codecs) that I always install but forget that I need to until I go to do something and it's not there. It doesn't even have to be by-the-book; I'm not looking to deploy these publicly. I'm just looking to roll up all these tasks into one sudo dpkg --install. To quantify "simple" or "easy," I mean to say that I'm looking for the method with the fewest steps requiring the least technical knowledge and, most importantly, taking the least time.

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• Can I config different VIP per service pointing same Real servers with Cisco ACE?

  - by Kamome

  I'm using Cisco ACE Module with Cisco Catalyst 6504. There are 2 real servers connected to Switch, and runs three different services. (TCP 82, 83 and 84) I have to use three different URLs per service. (for example, a.com for TCP 82, b.com for TCP 83 and c.com for TCP 84) Therefore, I need three IPs. The problem is, is it possible that configure 3 different VIPs with same real servers with Cisco ACE Module? I mean, if VIPs are 1.1.1.1, 2.2.2.2, 3.3.3.3 and real servers are 4.4.4.4, 5.5.5.5, can I configure as following : VIP 1.1.1.1:82 Real Server 4.4.4.4:82, 5.5.5.5:82 VIP 2.2.2.2:83 Real Server 4.4.4.4:83, 5.5.5.5:83 VIP 3.3.3.3:84 Real Server 4.4.4.4:84, 5.5.5.5:84 I think, logically, it's possible. But is it REALLy possible?

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• is it possible to get IP address of a wifi that you are not connected to

  - by coltonon

  Just like the question states. Is it somehow possible to get the IP address of a network that you don't have access to? For example, if you click the little wifi button on your task bar, and highlight your cursor over one of the options, you get some info. But your external IP address is actually the address of the router, isn't it? Which would mean you would have to connect to the wifi, and then the router to get an IP address, correct? I realy just want a simple answer: No or Yes and here's how

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• What compatibility trade-offs do we need to make in order to use a hardened SSL config for Nginx?

  - by nathan.f77

  I found some hardened SSL settings in github.com/ioerror/duraconf. Here is the header from the config: This is an example of a high security, somewhat compatible SSLv3 and TLSv1 enabled HTTPS proxy server. The server only allows modes that provide perfect forward secrecy; no other modes are offered. Anonymous cipher modes are disabled. This configuation does not include the HSTS header to ensure that users do not accidentally connect to an insecure HTTP service after their first visit. It only supports strong ciphers in PFS mode: ssl_prefer_server_ciphers on; ssl_session_cache shared:SSL:10m; ssl_session_timeout 10m; # Only strong ciphers in PFS mode ssl_ciphers ECDHE-RSA-AES256-SHA:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA; ssl_protocols SSLv3 TLSv1; If we were to use these settings on our website, what does "somewhat compatible" mean? For example, would IE6 still be able to connect?

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• Temporarily Utilizing 304 Header on Apache for Crawlers

  - by Volomike

  I have a client who has a hosting arrangement with 400 customer sites all hosted through SuPHP in CGI mode on Apache. The sysop is now gone and the client is calling on me for rolling out a new PHP thing. Trouble is -- server load is very high right now and we have found that it's due to the crawlers. We had one customer in particular who complained of slow websites, and we engaged a 304 header plugin in his site against most crawlers, and his site perked right up. We'd like to lower that load by issuing a global 304 header to all the crawlers, letting human visitors through. I have a long list of user agent keywords to trap for. What's the best way to temporarily engage that global 304 header, while allowing human visitors to get right on through? I mean, I could roll out 400 .htaccess file changes, but it would be ideal to make this change in like one central Apache config and then it automatically affect all the sites at once.

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• Launch Webkit Gtk+ on ubuntu 11.10

  - by qlinux

  I am using Webkit nightly build revision 110829 on Ubuntu 11.10. I successfully build it. Here is what I did: In the Webkit directory I run: Tools/Scripts/build-webkit --gtk Built succeeded. I tried running it by typing: Tools/Scripts/run-safari --gtk But nothing happens. I mean, the command just did not show anything. Anyone has any idea? For someone who vote down: Like I said, when I run Tools/Scripts/run-safari --gtk nothing happens. So if anyone has any idea how to run it properly please tell me. I followed this instruction: https://trac.webkit.org/wiki/BuildingGtk

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• Is it possible to have a computer run two OS's in memory at the same time?

  - by Hebon

  I'm sick of needing to reboot my computer every time I wish to use another OS, or run a virtual machine that skimps on power. With the onset of large amounts of memory for computers nowadays I began to think that there must be some way to run two OS's in memory with a way to switch between the two. In my mind, it doesn't seem too difficult; a compatibility layer boots up after bios, which in turn boots to OS1. While in OS1, software is run that triggers a save to ram boots back to the compatability layer, and then boots to OS2. This way, the OS's can be used side by side and boot times are cut drastically short since both OSs are already in ram. Both OS's have their own designated and protected memory so there is no problem there... I mean, it seems fine, but no one has done it, so there must be some reason as to why. I would love some insight into this please.

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• dansguardian error: filterports must match number of filterips (pfsense)

  - by Bulki

  Hi I'm setting up pfsense with squid3 and dansguardian packages. When I try to start the dansguardian service however, I get the following errors: May 27 22:17:37 php: /pkg_edit.php: The command '/usr/local/etc/rc.d/dansguardian.sh start' returned exit code '1', the output was 'kern.ipc.somaxconn: 16384 -> 16384 kern.maxfiles: 131072 -> 131072 kern.maxfilesperproc: 104856 -> 104856 kern.threads.max_threads_per_proc: 4096 -> 4096 Starting dansguardian. filterports (2) must match number of filterips (1) Error parsing the dansguardian.conf file or other DansGuardian configuration files /usr/local/etc/rc.d/dansguardian.sh: WARNING: failed to start dansguardian' May 27 22:17:37 root: /usr/local/etc/rc.d/dansguardian.sh: WARNING: failed to start dansguardian May 27 22:17:37 dansguardian[52944]: Error parsing the dansguardian.conf file or other DansGuardian configuration files May 27 22:17:37 dansguardian[52944]: filterports must match number of filterips What does "filterports must match number of filterips" mean? Any thoughts on the matter?

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• Windows security unknown accounts: security breach?

  - by Keikoku

  I was uploading some images I had just created to imgur earlier today and noticed that chrome couldn't access my Pictures folder. Windows tells me access was denied. Firefox didn't have an issue though I went to it through windows explorer and it worked fine, and looked at the security tab under properties and noticed that there were four unknown accounts, one of which has full control privileges. I looked at my other folders in the same drive and none of them had these unknown accounts. It was only that specific Pictures folder, and all of its subfolders. What are these unknown accounts and what could it mean? Should I be worried that someone may have compromised the system (well, I should probably be worried about that all the time I guess) I read on microsoft support forums that it may be the result of a previously deleted account, but there has only been one account on this computer for months and no user account management has been performed for awhile.

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