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• Should I Upgrade My Old Wireless Router?

  - by lyngbym

  I have an old wireless router, and I mean stone age old (5 years). There is nothing wrong technically with the router, it serves my wireless needs at home but it is really darn old. A search on Belkin's site for F5D7230-4 actually turns up a different old model so I scrounged up this old review for you to get a sense of what I'm running: http://www.pcmag.com/article2/0,2817,1572451,00.asp. Is there a valid security reason to replace this router in 2009? Google searches have turned up a few security threats to it and Belkin hasn't released new firmeware in years for it. I am starting to think I should replace it mainly because its NAT is about the only thing protecting me from the outside world. Buying a new wireless router is a boring way to spend money since it just sits on a shelf doing its job. Thoughts?

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• Where exactly does a portable app is running when the usb stick is pulled out without closing that app?

  - by Selin Peck

  Where exactly does a portable app is running when the usb stick is pulled out without closing that app? Is it in memory? Is it written the on hard disk as temporary files (where exactly is it, appdata or where)? Does that mean the next user of the pc could gain access just clicking that from the system tray and saving to other folders? How about when the system crash and that portable app is not closed the normal way? On the next open, will it stay somewhere on temporary folders?

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• Chassis fans and power LEDs still work in Hibernate

  - by Jaded

  I have ASRock Z68 Extreme3 Gen3 motherboard recently updated to 2.20 BIOS version. OS is Windows 7 x64. The problem is after that update full hibernation (by that i mean full system power off) stopped working although everything was fine before. Now when I press hibernate, sleep in initiated as usual, monitor goes to sleep, HDD and CPU fan stop spinning, but chassis fans (i have Gigabyte Aurora 3D 570 case with two rear and one front fans) still remain working. Also power leds are lit as if computer is turned on. Tried changing different UEFI settings related to sleep mode, and none of them change above described behaviour. I have "Deep Sleep" (Advanced-South Bridge Configuration) set to "Enabled in S4-S5", "Suspend to RAM" (Advanced-ACPI Configuration) set to "Auto", all fans settings in "H/W Monitor" set to "Auto".

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• Rewriting to address on postfix local aliases

  - by Wade Williams

  I was running into the common problem that mail for "root" on my system was having $mydomain appended, and because $mydomain is not in $mydestination, the mail was being sent to our central mail server as "root@domain." I cannot add $mydomain to $mydestination, because if I understand it correctly, that would mean all mail addressed to $mydomain would be looked up locally, and if an alias does not exist, delivery would fail. So, I followed these instructions: Delivering some, but not all accounts locally which seems to have resolved the problem. Mail for "root" is now expanded according to /etc/aliases and delivered to the non-local address I desire. The one oddity however is that the "To:" address still reads "root@domain." Is there any way I can get the "To" address to be the one that the alias directed its delivery? So for example, if my alias says that mail for "root" should go to "hostname-admin@domain" is there any way the "To" address can be rewritten as "hostname-admin@domain?" Currently it still shows as "root@domain."

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• How to close all background processes in unix?

  - by Gabi Purcaru

  I have something like: cd project && python manage.py runserver & cd utilities && ./coffee_auto_compiler.py And I want both of them to close on Ctrl-C (or some other command). How can I accomplish that? EDIT: I tried using jobs -x kill and kill `jobs -p `, but it doesn't seem to kill what I need. Here is what I mean: moon 8119 0.0 0.0 7556 3008 pts/0 S 13:17 0:00 /bin/bash moon 8120 6.8 0.4 24568 18928 pts/0 S 13:17 0:00 python manage.py runserver jobs -p give me just process 8119, but I also need to close 8120, since it's the thing that the first command opened. If it helps, the commands are actually in a Makefile, and I want it to run two daemons at the same time (and somehow close them at the same time). And yes, I'm using ubuntu, with bash

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• What are the benefits of running a app server in user space, like Unicorn, as opposed to as sudo?

  - by dan

  I've been using Phusion Passenger + Rails/Sinatra for a lot of projects. Passenger runs under the main Nginx or Apache process. But I'm interested in Unicorn, partly because it runs in user space. You just set up Nginx to proxy_pass requests to a unix socket that is connected to Unicorn processes that you fire up under a normal user account. Is there anything to be said as far as advantages and disadvantages of these two alternative approaches to running an web app? I mean in terms of ease of administration, stability, simplicity, etc.

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• Dependency issue when installing some packages with apt

  - by Julien Genestoux

  We have a little trouble installing some php5-* packages. I am reallt not sure what is going on. We have the latest version of php5-common. # apt-get install php5-mcrypt Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: php5-mcrypt: Depends: php5-common (= 5.2.6.dfsg.1-1+lenny16) but 5.2.11-0.dotdeb.0 is to be installed E: Broken packages We get similar error with many other php5-* packages, like php5-imap.

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• Upgrade to ubuntu 13.04 from 12.04 with iso image

  - by Digvijay Yadav

  I have ubuntu 12.04 installed on my system. I want to upgrade it to ubuntu 13.04. I want to do this upgrade using an iso image of ubuntu 13.04. I tried this Solution But it didn't work for me. After running these command I didn't get any alerts about updating. Also I don't understand the gksu part of the solution. Here are the steps I tried: sudo mount -t iso9660 -o loop PATH/TO/ISO /cdrom then sudo /cdrom/cdromupgrade Read more: http://linuxpoison.blogspot.tw/2011/06/how-to-upgrade-ubuntu-using-alternate.html#ixzz2SFMqlOPx I also wanted to know, If I can do this using a networked computer. By this I mean the iso file is on some other computer. Thank you.

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• How to best migrate one Windows 2008 R2 / SharePoint / Exchange / Terminal Services (All-in-one) int

  - by MadBoy

  Hello, My client has one machine with Windows 2008 R2 and everything on it. By everything I mean AD, DNS, SharePoint 2010 Standard, Exchange 2010 Standard, Terminal Services, Office 2010 and a bunch of additional apps. Everything stands on I7 x 2 and 36gb ram for 7 people total. I've decided that we should virtualize it and split things into 4 VM's and keep host only with Hyper-V installed to host all the machines. What problems should I expect? What good advices can you give. My plan is that when i move everything to VM's i will move vm's to safe place and format the host as it has a lot of really bad things happening on it. But this also means that everything will be wiped from current solution so I have to be sure that Exchange etc will work when host gets wiped. MadBoy

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• How to install seleniumHQ for Python on Windows?

  - by Katie

  I would like to know how to install SeleniumHQ (http://seleniumhq.org/download/) on Windows XP/Vista/7? On Ubuntu/Debian system you need to just type those commands: $ sudo apt-get install python-pip $ sudo pip install selenium $ sudo apt-get install python-pip xvfb xserver-xephyr $ sudo pip install selenium and then I can do this: #!/usr/bin/env python from selenium import selenium # ... but how about Windows? Thanks for any help (I know where to find Selenium doc but still - would anybody be so kind to give me some steps: I mean, download this, do that ...) THANKS:)

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• Unable to install OpenLDAP in debian based elementary OS

  - by Waqas Khan

  Hi while installing openldap when i enter the command: apt-get install slapd I get the following output Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: slapd : Depends: libldap-2.4-2 (= 2.4.28-1.1ubuntu4.1) but 2.4.28-1.1ubuntu4.2 is to be installed E: Unable to correct problems, you have held broken packages. Please help.

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• Isn't NAT a MUST when a LAN uses rfc 1918 private IPs?

  - by aks

  Isn't NAT a MUST when a LAN uses rfc 1918 private IPs? Can an organization assign its hosts with private IPs and still communicate with the external world without NAT? how can an internal host with a private IP (say 10.1.1.1) communicate with external world without NAT? I mean, how can the reply/response packet from the external world reach the original source as the packet with Dest IP = 10.1.1.1 will get lost as it can not be routed as many organizations can use the same IP. Why doesn't rfc 1918 (Address Allocation for Private Internets) make any mention of NAT?

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• Installing Oracle Client 11.1.0.7 on Windows Server 2008 64-bit. What does "Install Location" and "S

  - by Anders

  I am trying to install Oracle Client 11.1.0.7 on a Windows Server 2008 64-bit. To some this might not be rocket science but I can't understand what the options under the install screen "Specify Home Details" mean. The defaults given suggest that I use Oracle Base and install software under my own account name. It also suggests that each user should have a separate Oracle Base. This seems counter intuitive to me. I am doing a server install after all. All I want to use the installation for is to connect to an Oracle Database from Reporting Services. Can I safely ignore this and just accept the defaults? What are the implications if I change the location to a common directory?

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• Changes to talk/ytalk or alternative chat in the Linux terminal

  - by cascaval

  While looking for a piece of software that provides chat between 2 Linux server users logged in the terminal, I tried talk/ytalk. Unfortuntaley it provides chat between users on separate walls (each user has its own wall) and the messages lack timestamps. Is it possible to set it up so that at least timestamps are provided? Alternatively, is there any other software that could provide one wall on which users write messages prepended with time? Simple chat with messages listed in the order of submission would be ideal: 13:05:48 [bridgekeeper@...]: What is the air-speed velocity of an unladen swallow? 13:06:28 [cascaval@...]: What do you mean? An African or European swallow? I already tried wall and write but they don't fit the bill. OS: Debian 6.0

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• VPN trace route

  - by Jake

  I am inside an Active Directory (AD) domain and trying to trace route to another AD domain at a remote site, but supposedly connected by VPN in between. the local domain can be accessed at 192.168.3.x and the remote location 192.168.2.x. When I do a tracert, I am suprised to see that the results did not show the intermediate ISP nodes. If I used the public IP of the remote location, then a normal tracert going through every intermediate node would show. 1 <1 ms <1 ms <1 ms 192.168.3.1 2 1 ms <1 ms <1 ms 192.168.3.254 3 7 ms 7 ms 7 ms 212.31.2xx.xx 4 197 ms 201 ms 196 ms 62.6.1.2xx 5 201 ms 201 ms 210 ms vacc27.norwich.vpn-acc.bt.net [62.6.192.87] 6 209 ms 209 ms 209 ms 81.146.xxx.xx 7 209 ms 209 ms 209 ms COMPANYDOMAIN [192.168.2.6] Can someone explain how does this VPN tunnelling works? Does this mean VPN is technically faster than without?

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• Linux: How to rename old mysqld when upgrading MySQL?

  - by Continuation

  I'm upgrading MySQL from MySQL 5.0 to Percona Server 5.1. I'm planning to just use yum remove and yum install to do the upgrade. However, I read in the documentation that it's a good idea to rename the old mysqld to mysqld-5.0. And if the upgrade doesn't work, I could just revert back to the old version. How exactly does this work? If I use yum remove, doesn't that mean the old mysqld is removed? So how do I rename it? Where is mysqld located? How do I find it? Thanks.

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• Non existing GPO applying? WSUS

  - by Jake

  I recently took my WSUS server offline. In the mean time I want the clients to update from the internet until I get WSUS up again. However, Windows Updates is tring to contact the old server and (obviously) failing to get new updates. I have updated the WSUS GPO to disabled. Checked DNS is resolving. Deleted WSUS GPOs. GPRESULT reports that policy is not being applied Run GPUPDATE /force No issues reported from DCDIAG I delete the registry keys HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate But the keys return after a reboot. What else can I try ?

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• apxs cannot install mod_cloudflare on centos

  - by Adam

  [ Linux - CentOS - Apache 2.2 - mod_cloudflare - apxs2 ] I have changed my nameservers to point to CloudFlare. The problem is that all the IP addresses are coming in as CloudFlare's. This is no good, because I have to monitor and block some specific traffic. mod_cloudflare is supposed to resolve this but I have been unable to get this installed. The command in the documentation uses apxs2. I can't figure out how to install this, or if it just means for 'apache 2.4'. I'm running 2.2.3, and I can use 'apxs'. When I run: apxs -aic mod_cloudflare.c I get the error apxs:Error: Command failed with rc=65536 Does this mean I need apxs2 or something else? How do I get mod_cloudflare working on my server? I appreciate any help, the documentation is vague and limited.

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• Solaris syslog.conf. What are root and operator?

  - by cjavapro

  In /etc/syslog.conf #ident "@(#)syslog.conf 1.5 98/12/14 SMI" /* SunOS 5.0 */ # # Copyright (c) 1991-1998 by Sun Microsystems, Inc. # All rights reserved. # # syslog configuration file. # # This file is processed by m4 so be careful to quote (`') names # that match m4 reserved words. Also, within ifdef's, arguments # containing commas must be quoted. # *.err;kern.notice;auth.notice /dev/sysmsg *.err;kern.debug;daemon.notice;mail.crit /var/adm/messages *.alert;kern.err;daemon.err operator *.alert root *.emerg * # if a non-loghost machine chooses to have authentication messages # sent to the loghost machine, un-comment out the following line: #auth.notice ifdef(`LOGHOST', /var/log/authlog, @loghost) mail.debug ifdef(`LOGHOST', /var/log/syslog, @loghost) # # non-loghost machines will use the following lines to cause "user" # log messages to be logged locally. # ifdef(`LOGHOST', , user.err /dev/sysmsg user.err /var/adm/messages user.alert `root, operator' user.emerg * ) I googled some and it seems that root and operator mean email to root and to operator. Is this correct?

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• Can anyone explain these cpu specs?

  - by Kevin

  Intel® Core™ i7-640M (2.8~3.46GHz, 35W) w/4MB Cache - 2 Cores, 4 Threads - 2.5 GT/s SO i'm buying a new laptop, which i have not done in 6 years. So i am not familiar with any of these cpu specs. It was the highest option for intel for this laptop. So i am assuming it is somewhat fast. But i'd like to learn what these specs mean. Any help would be greatly appreciated. i am not really a computer guy but would love to learn about what I am buying. Thanks!

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• Why is a single thread spread across CPU's?

  - by Marcus Lindblom

  I'm just curious why the scheduler constantly moves an app between CPUs, rather than keeping it on one. It looks a bit silly to have 4 cores at 25% rather than one at 100%. Does it has to do with heat, or is it more efficient somehow? Do other OS's do it differently? Insights or links to in-depth stuff would be nice. (Couldn't find much myself.) Update: By "spread out" I don't mean that it executes on several cpu's at once, but is being moved from one to the other several times per second, making the effect that it looks spread out.

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• USB Adapter for Memory Cards

  - by ktm5124

  I am looking for something like a USB adapter for video cards. It is a cable that on one end hooks into a USB port on a computer and on the other accepts any one of a variety of video cards. Essentially it's an "all-in-one" USB adapter for video cards. I'm told that they are sold all over... does anyone know what it is called or where to find them? I should clarify, by the way, that by "video card" I mean a memory card for a video camera, and that the goal is to read this video data onto a computer, from a variety of video card types, through a USB port. That way if you go to your friend's house and bring your computer, you can transfer the video data on his video camera to your computer, trusting that the adapter will have a slot for his kind of video card.

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• What settings need to be changed to allow EC2 instances to use Amazon's Route 53 for DNS?

  - by ks78

  I have a number of Amazon EC2 instances, all running Ubuntu, which I'd like to configure to use Amazon's Route 53. I setup a script, following Shlomo Swidler's article, but ran into script-related issues, which were answered here. Now, I have the script working, but my instances are still not able to access Route 53's DNS. By this I mean, they are not able to resolve hostnames to IP addresses. My instances are currently configured with the DNS server IP address Amazon pushes out to them by default, does that need to be changed when using Route 53? I'm also IP-restricting my instances using the Security Groups. Could that be the problem? Is there a certain IP address or port I should open to allow communication with Route 53? It seems that DNS requests should be originating from my instances so the Security Groups shouldn't be an issue, but I've been wrong before. If anyone has any ideas, I'd really appreciate it.

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• Link bonding across multiple switches?

  - by Bryan Agee

  I've read up a little bit on bonding nics with ifenslave; what I'm having trouble understanding is whether there is special configuration needed in order to split the bonds across two switches. For example, if I have several servers that all have two nics each, and two separate switches, do I just configure the bonds and plug 1 nic from each into switch #1 and the other from each into switch #2? or is there more to it than that? If the bonds are active-backup, will a nic failure on single machine mean that server may become disconnected since the rest of the machines are using the primary nic and it's using the secondary? Or do you link the switches with one cable as well?

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• Use xrandr to set the absolute position of the screen?

  - by Eli

  I am running XFCE on Fedora 15. I use xrandr to set the secondary display (HDMI-0) to be to the right of the primary (DVI-0), however it is always at the top-right. Is it possible to set the absolute position of the display (e.g. DVI-0 at 0,0 and HDMI-0 at 1920,56), or even set the display to be at the bottom-right? I cannot modify the Xorg.conf, which would be the easy way, as that would mean generating an Xorg.conf file (there is none right now), and I do not know of any automated tool to do that (other than the fglrx driver). The reason why I need this is because I want to extend the XFCE panel accross both monitors, but with there being a 56-pixel-wide dead zone at the bottom I cannot do this.

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