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• Mapping drives on MacOSX (Leopard/Snow Leopard) permanently inside LAN

  - by Shyam

  Hi, How do I "map" shared folders on a Mac, permanently? With map, I do not mean 'connect', but permanently add it to the system so it exists after reboot. Since workstations tend to shutdown, I wonder also the symptoms and cures in case that happens. In Linux, this can be done using the fstab file, but I noticed that volumes are mounted in a different structure than Linux. I need this to backup some workstations, doing a recursive job over a single directory, that should contain the shared folders. I use Terminal to access the main system, so by preference, the solution would be nice that works within a bash shell vs GUI. I can access all folders in Finder. Thanks!

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• Intermittent freeze of Windows 7 x64 on laptop

  - by georged

  I have Lenovo W500, 8GB RAM, 250GB Crucial SSD running Windows 7 x64 using boot-to-vhd. Lately I started to experience some random freezes for 5-30 seconds. And when I say "freeze" I mean it; it's like a time machine - no input taken, nothing is written anywhere, no log, no disk activity. And then suddenly machine would wake up and continue as if nothing happened. I do suspect that it's one of the drivers but I don't see any updates in the log lately except for .NET 4 framework and Adobe Reader. Out of new or updated software I can only recall Skype and IE9 but freezes started to occur definitely before IE install. Regular software includes but not limited to: Office 2010, VMWare Workstation, IE9, Chrome, Skype, Seesmic/TweeterDeck, Live Writer. How should I approach the "hunting season" to find our the culprit? Any tools or packages that could help me to identify the component, program, driver that causes the freeze? Cheers

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• Firefox extension to save tabs?

  - by emzero

  I'm looking for some Firefox (4 or 5) extension to save a group of tabs (better if can be done directly in Panorama view). What I mean by "Save tabs" is not to restore them when Firefox starts. I always have the browser opened and a LOT of tabs (work and personal life related) eating my RAM. So when I'm not working, I would want a way to save those tabs but keep them closed while I still use Firefox. So when I have to start working again, I will restore that saved tabs back again. I know I could use something like Read It Later, but I really need a way to say "hey, save this group of tabs and close them". RIL makes me do it per tab, which is annoying since I'm used to have A LOT.

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• Mac Parallels - Bridged network

  - by Jack

  Hey All, I am new to Apple and my task is to install VMs on a Mac server. I am trying to install 4 VMs and I want them to have separate IPs and be visible on the network as separate machines. What are my options ? My research shows me that I can use bridged network, but I have to select an adapter. I have only two network adapters, does that mean I can only have 2 VMs ? And when I configure the 2 VMS, will my actual server have internet connection ? Or does it use the Mac address ?

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• High Memory Utilization on weblogic

  - by Anup

  My Weblogic App Server shows high Memory Utization. The application seems to perform good without any memeory issues. Now that my traffix is going to increase i am worried about the memory and have a feeling things could go bad and need to take action now and i am confused as to should i increase The JVM memory on the weblogic instances which means adding more physical memory or should i increase the number of managed instances in the cluster. Would like to understand what does having high memory utilization mean and the advantage and disadvantages of adding JVM memory and adding managed instances. Thanks

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• Running command transparently over ssh

  - by jnsg

  By transparently I mean forwarding of: stdin, stdout and stderr standard signals (SIGHUP or SIGINT would be great for a start) As an example, consider these invocations of a (pointless) local and remote command: $ `cat - > /dev/null; sleep 10` < /local/file $ ssh user@host "cat - > /dev/null; sleep 10" < /local/file I can interrupt the first one with ^C just fine. But if I try this during the second one it only affects ssh, leaving the command running on the remote server if cat has already finished. I know about launching sshwith -t, but this way I can't send data via stdin. Is this possible with ssh alone at all?

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• High Memory Utilization on weblogic

  - by Anup

  My Weblogic App Server shows high Memory Utization. The application seems to perform good without any memeory issues. Now that my traffix is going to increase i am worried about the memory and have a feeling things could go bad and need to take action now and i am confused as to should i increase The JVM memory on the weblogic instances which means adding more physical memory or should i increase the number of managed instances in the cluster. Would like to understand what does having high memory utilization mean and the advantage and disadvantages of adding JVM memory and adding managed instances. Thanks

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• Ideas for SVN/SQL/PHP/Linux Dev Enviroment Supporting Multiple Isolated Environments?

  - by jpganz18

  I am trying to create a "dev" for my users. In that environment they would access to their own account of PHPMyAdmin, SQL, Subversion and FTP which is not a big problem, but I would like to emulate like if each one would be in their own server. I mean so that they could change the PHP configuration (for example) and would be done only in its own environment. Any idea how to do this? Do I have to make something "special" at the installations of my server or something like that?

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• Netgear Wireless-n 150 wrn1000v2

  - by Jordan

  I'm not sure if this is the place to ask this question, move it if it's not. I'm trying to fix a wireless network. It only connects to a few devices and when it does work the connection is spotty. The router is a netgear wireless-n 150 wrn1000v2. Connecting to the router isn't a big problem, but connecting to the internet via WiFi is. I can't upgrade the firmware becuase it is from Comcast and it seems as though they only allow their versions of the firmware. I've monitored the network with wireshark and I see that the devices that are having trouble connecting are constantly asking "who is 192.168.1.1 tell 192.168.1.x" where x is the ip for the device. 192.168.1.1 is the router. This is from running wireshark on the wireless device. What does this mean. At this point I feel like buying a new router is the only option.

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• I need access control within the same network/VLAN

  - by Sadiq ali

  Hi, I have a single network/VLAN and I want to block some traffic and allow some traffic in my network, is this possible using a L2 or L3 switch? If so which switches support this feature and what would be the commands to configure this? I have already tried this using access lists by applying it to an ethernet port but if I apply it on one port it will automatically work on incoming traffic on that port but I mean it to work on only outgoing traffic as per my ACL. Do you have any suggestions please?

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• Wired network on computer to wifi

  - by user329592

  I just got myself a wifi capable cell phone, but I dont have a wireless internet at home. I do have a wired unlimited internet connection on my computer, and I wonder whether there is any gadget that I can plug into my computer (maybe at the usb port?) with which I can turn my computer into a wifi access point? I mean, a dongle or something which will enable me to connect my phone to my computer's internet through wi-fi? Also, I dont know anything about networking, so would it be hard for me to set up a secure wifi point? Thank you for reading this question through. Hope I can buy some sort of adapter which is comparitively cheap.

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• set up pernament ramdisk in ubuntu to not using ram when is the ramdisk empty

  - by robo

  Hi I've got 8GB RAM on my laptop running Ubuntu 12.04. I added following record to /etc/fstab tmpfs /media/ramdisk tmpfs defaults,noatime,mode=1777 0 0 What exactly it means? I have tested that I can save 4GB to ram disk at most. Why exactly 4GB? Where did the computer get this number from? And what happens when I don't use that ram disk for a while and when the directory /media/ramdisk is empty? Does it mean that my system can use whole 8GB ram? And what happens when the system runs out of ram? Will the most rarely used things be moved to swap? And should I turn of swap if I think my system will never need it? Will turning off the swap make my computer faster? And can I even remove the swap partition? And will the hibernation work correctly then?

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• How does fail2ban 0.9 database storage actually works?

  - by Arantir

  Fail2ban 0.9 introduce database storage to save bans on restart. But I can't find out the actual mechanism of it work. There is dbpurgeage parameter which controls lifetime of old bans, defaults to 24 hours. As I see from code research, fail2ban saves a ban to the db with timeofban equals to the moment of ban being saved. Then every dbpurgeage period it removes all bans with timeofban < MyTime.time() - self._purgeAge, in other words removes all bans have been stored more than 24 hours ago. But what if an IP was banned for the month? Does all this mean that with dbpurgeage = 86400 after restart in 24 hours I will lost all bans longer than 24 hours? I just want that all my permanent bans will be preserved in any case.

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• How to Set Linux Bonding Interface to Gigabit

  - by Kyle Brandt

  I have enabled Linux active backup mode bonding. Each interface is a gigabit interface, but the bond interface seems to end up at 100 Megabit: bonding: bond0: Warning: failed to get speed and duplex from eth1, assumed to be 100Mb/sec and Full. ... bnx2: eth0 NIC Link is Up, 1000 Mbps full duplex, receive & transmit flow control ON ... bonding: bond0: backup interface eth1 is now up ethtool apparently can't provide info on bond: sudo ethtool bond0 Settings for bond0: No data available So does this mean I am operating at 100 or 1000 Megabit (My guess is 1000)? If it is only 100, what options in the ifcfg scripts or the modprobe bonding options do I need to sett to make it 1000?

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• What are the "software" requirements for a 3D video?

  - by Diogo Rocha

  Today, looking for the technical explanations about MPEG4, I saw that it can implement the VRML rendering for a 3D video. This makes me wondering about the "software" requirements to make or to see a 3D video. I mean, assuming that I have all the "hardware" requirements(3D monitor, VGA, 3D-camera, etc), what should I need to make and see 3D videos looking over the "software" side? Must I need to make it on MPEG4 instead MPEG1 or MPEG2 because of the VRML support? May I need a specifc 3D codec to open and see 3D videos?? Until today, I believed that a 3D video was just a regular/ordinary video composed of 2 "overlapping layers". PS: This is the first time I'm researching about technical explanations/references about MPEG standards and 3D videos, any help or basic explanations will help.

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• Disable DirectDraw, but still have Direct3D?

  - by GodsBoss

  I have a Windows XP SP3 machine, with up-to-date patches. It has DirectX 9.0c, version number 4.09.00.0904. Can I disable DirectDraw, but have Direct3D still active? I read the Wikipedia articles about DirectDraw and Direct3D, but do not know if I understand them correctly: That is, it contains many commands for 3D rendering; however, since version 8, Direct3D has superseded the old DirectDraw framework and also taken responsibility for the rendering of 2D graphics. Does that mean DirectDraw is now a part of Direct3D? Because I cannot disable DirectDraw without disabling Direct3D, but it works the other way around.

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• securing source code with bitlocker

  - by Daniel Powell

  We need to deploy a web based application at a client site where it will be within their local intranet. Part of our requirement is to provide some basic security to protect our IP. I realise that nothings a 100% guaranteed fix but we are just looking to make it a bit harder for most people. The server will be running server 2008 and I was considering using bitlocker as a cheap and nasty way to protect it. From what I understand assuming the mobo supports it we can use the Transparent bitlocker mode and this means that moving the hdd to another pc will mean the hdd will be unreadable in that machine baring some sort of cold boot attack to steal the encryption keys. Is this assumption correct and in the case that the motherboard or any other component fails in the pc and we need to replace it do we lose access to our data or is there a way to unencrypt it (obviously accessible to only our company) EDIT: we do have legal documents that cover this and we will be locking the pc physically and the client will not have access to the pc (windows login) other than via the website we host on it

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• kernel software trap handling

  - by Tony

  I'm reading a book on Windows Internals and there's something I don't understand: "The kernel handles software interrupts either as part of hardware interrupt handling or synchronously when a thread invokes kernel functions related to the software interrupt." So does this mean that software interrupts or exceptions will only be handled under these conditions: a. When the kernel is executing a function from said thread related to the software exception(trap) b. when it is already handling a hardware trap Is my understanding of this correct? The next bit: "In most cases, the kernel installs front-end trap handling functions that perform general trap handling tasks before and after transferring control to other functions that field the trap." I don't quite understand what it means by 'front-end trap handling functions' and 'field the trap'? Can anyone help me?

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• deploying a Python application from a PHP developer

  - by user1218776

  I'm a little confused on the deployment process for Python. Let's say you create a brand new project with virtualenv source bin/activate pip install a few libraries write a simple hello world app pip freeze the dependencies When I deploy this code into a machine, do I need first make sure the machine is sourced before installing dependencies? I don't mean to sound like a total noob but in the PHP world, I don't have to worry about this because it's already part of the project. All the dependencies are registered with the autoloader in place. The steps would be: rsync the files (or any other method) source bin/activate pip install the dependencies from the pip freeze output file It feels awkward, or just wrong and very error prone. What are the correct steps to make? I've searched around but it seems many tutorials/articles make an assumption that anyone reading the article has past python experience (imo).

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• Performance difference between compiled and binary linux distributions/packages

  - by jozko

  I was searching a lot on the internet and couldn't find an exact answer. There are distros like Gentoo (or FreeBSD) which does not come with binaries but only with source code for packages (ports). The majority of distros uses binary backages (debian, etc.). First question: How much speed increase can I expect from compiled package? How much speed increase can I get from real world packages like apache or mysql? i.e. queries per second? Second question: Does binary package means it does not use any CPU instructions that was introduced after first AMD 64bit CPU? With the 32bit packages does it mean that the package will run on 386 and basically does not use most of the modern CPU instructions? Additional info: - I am not talking about desktop, but server environment. - I dont care about compile time - I have more servers, so speed increase more than 15% is worth for using source code packages - Please no flamewars. Thank you very much

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• How does RAM fail?

  - by ethanlee16

  I have an issue with a Dell Inspiron 15 (1545) laptop that refuses to open any applications (save select Microsoft programs, e.g. Security Essentials, Ctrl Panel, Windows Explorer (not Internet), regedit, Event Viewer, etc.). I've run Microsoft Memory Diagnostics Tool and it found a 'hardware problem was detected.' Does this indicate that the RAM has failed? I notice when I open programs like Word, Excel, Internet Explorer, etc., it always give me an error from WerFault.exe saying The instruction at xxxxxxx referenced memory at xxxxxxxxx. The memory could not be written. and sometimes something about illegal instructions. If it is a hardware problem, does this mean that replacing the RAM is my only option? Again, I would also like to know if RAM can fail (like hard drives) and if malware can cause RAM to fail also.

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• Can I get dual monitor support (2xDVI) from my (DVI+HDMI) graphics card?

  - by nray

  It seems that pure 2 x DVI dual head video cards are becoming rare. Most cards feature something like 1 x DVI plus 1 x HDMI plus 1 x VGA or some other interface. The idea seems to be that you can just use an HDMI <= DVI adapter. One result is that cards are seldom marked " 2 x DVI " anymore, but does this mean that they support simultaneous output on all interfaces? Are all cards dual head these days? Take Asus's nVidia cards for example, they routinely have 1 x DVI plus 1 x HDMI instead of 2 x DVI, so my question is, are these equivalent to a dual head DVI card, or is there some detail required for dual monitor support? I use dual-monitor stretched desktops for digital signage projects.

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• Server freeze (Disk I/O possibly)

  - by user973917

  I have a Windows Server 2008 machine that is resyncing disks after a powerloss. The issue is that the system becomes unresponsive after about 10 minutes. We've checked with resource monitor and found that the CPU's aren't maxed; but the disk I/O is well over 250MB/s. We've attempted copying data from 1 disk to another; bypassing syncing of disks and this too causes the machine to freeze after about 10 minutes of copying data. I have attempted to let the machine resync the disks for a few days with the machine on in this "frozen" state. By frozen I mean that NOTHING works on the machine, it's completely unresponsive; no mouse movement, etc. I want to know how I would go about definitively checking if this is Disk I/O that is freezing the system. I know that disk I/O can freeze a system; but what can I use to run tests to be sure?

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• CentOS default never fsck root partition on start up?

  - by wwwpanda

  Most documentation or sites will say use "tune2fs -l " to check if the system will do fsck on the system partitions on next boot, in particular, should look at "Mount count" and "Maximum mount count" values. However, I notice for default CentOS 5 or 6 installation, when I check against the root partition, I always noticed something like this from tune2fs output: ... Mount count: 91 Maximum mount count: -1 Last checked: Thu Oct 29 18:48:14 2009 Check interval: 0 (<none>) ... i.e. the max. mount count is set to "-1". That makes me wonder does it mean CentOS (or Red Hat) won't check the root partition at all? I check the fstab, the last number for root partition is still "1" as usual. If the OS does fsck the root partition during startup, how can I tell when (i.e. after how many reboots or when) will the OS will start fsck the root parition during startup?

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• Connectiong adsl router/modem and router with bridgemode

  - by Zvonko Telefonko

  I have one adsl modem/router which is not "top" of the line and it lack allot of options which I need. I was able to acquire one Cisco router recently which has all options that I need ( like DMZ, VPN, port forwarding, etc). I'm interested, if I connect the old modem/router to new Cisco router using bridge mode, will I be able to use all the features on the Cisco? For instance, the old router is lacking of port forward options. Does this mean that I will not be able to use port forwarding on Cisco router either or, since I will be using bridge mode, this will not affect Cisco router and it will work as the modem is in him? thank you

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