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• Route using certain IP address

  - by spa

  I have a server with two public IPs. Both IPs are added to eth0 using ip addr add. Now I'd like to contact a server which uses IP address filtering. Only requests are allowed which use the second IP address. Is there are way to set this up using the standard route command in Linux? I guess that's not the case. So the only solution I see right now: Setup a virtual device let's say eth0:0 and bind the second IP address to it. Then I can reference the device in the route command. Edit: I can't use the second IP as primary one easily as this IP is used as failover IP.

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• How can we add arch specific conflicts tag when building .deb package?

  - by Sphopale

  We are trying to build multi-arch supported i386 .deb package. There are two .deb packages build on i386 X1 & X2 (X2 is a subset of X1 binaries). X1 <- X2 conflict each other when installing . Only one .deb package can be installed at any instance. We similarly have binaries on xa64 arch. Again on xa64, there are two .deb packages X1 & X2 (X2 is a subset of X1 binaries). X1 <- X2 conflict each other when installing . Only one .deb package can be installed at any instance. In case of multi-arch i386 .deb package,i386 .deb packages (X1 & X2) can be installed on xa64 along side with 64bit (X1 & X2) However I see that when installing X1:i386 & X1:amd64 can co-exist However, it throws conflict error when trying to install X1:i386 & X2:amd64 In short, Can we mark package to conflict based on arch Conflict: X2:i386 X1:i386 package should only conflict with X2:i386 & allow other packages to co-exist X1:amd64 package should only conflict with X2:amd64 & allow other packages to co-exist X1:i386 can co-exist with X1:amd64 OR X2:amd64 X2:i386 can co-exist with X1:amd64 OR X2:amd64 Thanks for your reply

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• connect to my database from another computer

  - by user3482102

  Sorry for being a :noob I am a student working on a dbms project on my laptop. I have installed mariadb and I have root access. Similarly the case with my friend's laptop. The problem is we both want to work on same database collectively as we are partners of a team in the project. How can I create a database in mariadb that we both can share? How to access that database? Please specify the software to use and implementation.

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• Move entire OS from NTFS drive to bigger ext4 drive.

  - by pangel

  According to SMART data, the hard drive I curently use is about to fail. I bought a new, bigger drive to copy the system to a safer place. The old drive is 160GB. Ubuntu was installed with Wubi, and the partition is NTFS. There are a few other partitions around (recovery partition, swap...) that I don't care about. The new drive is 320GB. I would like the new system to run on ext4, not on NTFS. I looked at solutions that use dd, or clonezilla, but it seems that moving to a different filesystem prevents me from using them. I considered installing a brand new ubuntu on the new hard drive and then copy /home from the old drive to the new drive, but I heard that there would be file permission problems. I would also have to reinstall all my software. One last thing: the NTFS drive has dead sectors. I don't know how this can influence the copy process, but I mention it just in case. edit: I do not care about the windows partition. I just want Ubuntu to make the transition.

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• Eclipse style autohotkey commands

  - by Ph4g3

  Is autohotkey capable of interpreting hotkeys in the style of Ctrl + Shift + W, W? I would assume a script like the following would work: ^+W:: ; Windows hotkeys (Ctrl + Shift + W) O:: Run Outlook ; Subsequent 'o' pressed => Run outlook E:: Run Explorer ; return From the documentation I note that these are called vertically stacked hotkeys and cause each line to perform the same action. In the case above, I think Ctrl+Shift+W and o will both cause outlook to be launched, whereas pressing e would cause explorer to be launched. What I would like is Ctrl+Shift+W, O runs outlook and Ctrl+Shift+W, e runs windows explorer. Is there any way to cause a hotkey to perform context specific actions (much like in Eclipse), where I can press Ctrl+Shift+W to activate a block of specific hotkeys?

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• Release Notes for 5/31/2012

  Here are the notes for this week’s release: Pull Requests We’ve moved the pull request creation UI from a modal dialog to a full page to make room for more context on what you’re sending with your pull request. In this week’s changes, you’ll see the list of commits; look for diffs to appear in the coming weeks. Corrected several issues where the line that had comments associated was not being properly differentiated in the code snippet previews on pull request discussions. Corrected an issue where pull request line comments would not appear to be associated with the proper line of code. Fixed an issue where accepting pull requests was not working properly. Bug Fixes Fixed an issue where code snippets could not be inserted using Opera. Fixed an issue where Internet Explorer displayed an error message when browsing the site using https. Fixed an issue where the CAPTCHA was not displaying properly on the Contact User page. Fixed an issue where paging was not working properly in the “Recent Release in Followed Projects” sections for logged in users. Other Updated the activity stream to no longer auto-load new items when scrolling down. Added an explicit download link at the end of the download countdown in case certain browsers/scenarios don’t automatically start downloading. Have ideas on how to improve CodePlex? Visit our ideas page! Vote for your favorite ideas or submit a new one. Got Twitter? Follow us and keep apprised of the latest releases and service status at @codeplex.

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• How do I justify to my management that we need a bandwidth upgrade?

  - by Sandeep

  I work in an office with a 8mbps line and about a 100 people. Our internet has slowed to crawl over the past few months, as we added headcount. However, using speedtest.net or other sites, still shows bandwidth as 8mbps. Now, how do I justify to management that we indeed need to upgrade our bandwidth ? Please note that I dont have access to our main routers or any network equipment. I can only use my system (windows+linux dual boot) to make a case for a reasonable justification. help!

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• Redirect with iptables if destination port is not listened

  - by PoltoS

  I've a server listening on port 10000. But this server is running only in a special case (then some third service is available). Otherwise the port is not listened. Is it possible to redirect the client to another port if 10000 is not listening? I see two solutions: 1) insert/remove iptables rules on server start/stop, but since the server may be killed, it may not insert the correct iptable redirect rule before dieing. 2) make a permanent userspace rule that checks if the port is listening and redirects the packet if not listened. How to do 2) ? Do someone have recipes for ipq? May be someone can suggest me a better way? It is something like fallback redirect: I'll have thousand of clients with different ports (10000-11000) and if their instance of server is not running, whey should be redirected to some page explaining why they don't have and instance connected.

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• How can I reset windows 7 file permissions?

  - by ssb

  I looked at this post and it seemed to be close to what I want, but my case might be a little worse: How can I reset my windows 7 file permissions to a rational state? Basically a while back I (very stupidly) changed the permissions on all sorts of system folders, and eventually rendered my computer virtually unusable. I managed to hack administrator privileges back onto key folders and getting it working, but in doing so I only modified permissions a lot more away from the natural state. I'm looking at this icacls stuff, but ultimately I need to reset EVERYTHING back to what it was in The Beginning, before I messed with it, from the C: directory all the way down. Right now application data is what's giving me problems, and I can't get it to work no matter how much I fiddle with those specific permissions. I will be forever grateful for help on how to do this without having to reformat.

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• Recommended design pattern for object with optional and modifiable attributtes? [on hold]

  - by Ikuzen

  I've been using the Builder pattern to create objects with a large number of attributes, where most of them are optional. But up until now, I've defined them as final, as recommended by Joshua Block and other authors, and haven't needed to change their values. I am wondering what should I do though if I need a class with a substantial number of optional but non-final (mutable) attributes? My Builder pattern code looks like this: public class Example { //All possible parameters (optional or not) private final int param1; private final int param2; //Builder class public static class Builder { private final int param1; //Required parameters private int param2 = 0; //Optional parameters - initialized to default //Builder constructor public Builder (int param1) { this.param1 = param1; } //Setter-like methods for optional parameters public Builder param2(int value) { param2 = value; return this; } //build() method public Example build() { return new Example(this); } } //Private constructor private Example(Builder builder) { param1 = builder.param1; param2 = builder.param2; } } Can I just remove the final keyword from the declaration to be able to access the attributes externally (through normal setters, for example)? Or is there a creational pattern that allows optional but non-final attributes that would be better suited in this case?

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• Should I use my real name in my open source project?

  - by Jardo

  I developed a few freeware programs in the past which I had signed with my pseudonym Jardo. I'm now planning to release my first open source project and was thinking of using my full real name in the project files (as the "author"). I thought it would be good to use my name as my "trademark" so if someone (perhaps a future headhunter) googles my name, they'll find my projects. But on the other side, I feel a bit paranoid about disclosing my name (in the least case I could be getting a lot of spam to my email, its not that hard to guess your private email from your name). What do you think can be "dangerous" on disclosing your full name? What are the pros and cons? Do you use your real name or a pseudonym in your projects? I read this question: What are the advantages and disadvantages to using your real name online? but that doesn't apply to me bacause it's about using your real name online (internet discussions, profiles, etc.) where I personally see no reason to use my real name... And there is also this question: Copyrighting software, templates, etc. under real name or screen name? which deals with creating a business or a brand which also doesn't apply to me because I will never sell/give away my open source project and if someone else joins in, they can write their name as co-author without any problems...

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• Grub2 menu after crash

  - by poopa

  Hi, I have ubuntu 9.10 desktop VMware VM with the default grub2 installed. There is some weird problem with this VM. When you clone this vm and have a customization script run, the cloned machine crashes at first boot (VMware does not officially suport customizaing Ubuntu newer than 8.04). After the creash the Grub boot menu is displayed but there is not time out. I checked /boot/grub/grub.cfg and it does indeed show a timeout of 10 seconds. Nothing happens till I select an option with the keyboard. The second time the Ubuntu loads, it does not crash. My question is, how do I make the grub menu timeout in that case? Thanks.

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• In mysql I want to set lower_case_table_names=1 on existing databases to avoid cases-sensitivity issues accross multiple platforms

  - by sakhunzai

  In mysql I want to set lower_case_table_names=1 on existing databases to avoid cases-sensitivity issues accross multiple platforms. A) What are the risks ?( besides show table issue) B) After setting lower_case_table_names=1, will I be in position to query databases across multiple platforms consistantly ? select * from USERS == select * from users; C) How the triggers + stored procedure + functions + views + events will be affected in this regards. I know lower_case_table_names is only for "TABLE" names but how about triggers other database objects . Will they remain case-insensitive How about views ? D) Do I need to rename all tables before/after this configuration setting or this will do the miracle in one step (i.e lower_case_table_names=1 neutralize table names) ? E) What will be the exact steps WRT:mysqd / my.ini ?

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• Too Many ESTABLISHED connection from a single IP address in Apache

  - by ananthan

  netstat -ntp |grep 80 shows too many ESTABLISHED connection from single IP address. Around 300 of them and it is not an attack and user is using a 2G connection to access Apache. This is the case with other 2G connections also. As a result of this Apache is running out of children. Earlier it was showing too many close_wait and after enabling tcp_tw_reuse and tcp_tw-recycle there is not much close_wait but the number of ESTABLISHED connections increased. We are using Ubuntu 11.04 having 48 GB ram keepalive On keepalive timeout 10 max clients 800 max-request-perchild 4000 timeout 300 I have set syn_ack to 1 and syn_retries to 2. On wifi there is no such issue. Connections are closing properly, but with 2G connections Apache is running out of children and too many ESTABLISHED connection. also i have tried setting timeout from default 300 to 30,but since our project is image hosting for mobile phones,clients couldn't upload images properly as they are getting frequent time out.Also there were a lot of 408 messages so changed it to the default 300

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• Dual monitor, permission issue

  - by cenna75

  I had a dual monitor configuration going on for quite some time. One day, after moving the computer to another location and reconnecting everything, it changed such that I saw everything in double (being very much sober), I think it's called the 'mirrors' config. Anyway, from there on, there was nothing to be done through the system settings gui to change it back, as it wouldn't allow me to save any modification. The error I get when clicking 'save' is : "Failed to create file /home/me/monitors.xml.xxxxxx. Permission denied", xxxx being a random code, changing everytime. However, I can save all the configurations I want just fine by using the terminal, in my case: xrandr --output DVI-I-1 --right-of VGA-1 So I do have a workaround and this is therefore a question more out of curiosity. What could possibly have changed to make it impossible to do it through the gui and still letting me change the config using xrandr without being root? I'm having a hard time believing it could have anything to do with disconnecting/reconnecting the monitors... Any idea? Thanks !

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• Configure a app in a subpath in nginx

  - by Rubem Azenha

  I have a nginx + passenger + single rails app setup in a Fedora server. My nginx.conf regarding my app looks something like this: server { listen 80; server_name myapp.mycompany.com; root /opt/apps/myapp_large_name/public; passenger_enabled on; client_max_body_size 4M; } So when I access myapp.mycompany.com.br it access to my rails app under /opt/apps/myapp_large_name/public. I want to be able to configure a subpath to access to another app (in this case, monit). I want something like that: myapp.mycompany.com.br/monit access the monit app. Is it possible?

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• Running nph-script.cgi keeps outputting Server details at the end

  - by wgewweg

  I am running a nph-script.cgi on my server. The server keeps adding HTTP/1.1 200 OK Date: Thu, 05 Nov 2009 02:28:53 GMT Server: Apache/2.2.8 (Ubuntu) PHP/5.2.8-1hardy~ppa1 with Suhosin-Patch mod_perl/2.0.3 Perl/v5.8.8 Content-Length: 0 Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Content-Type: text/plain X-Pad: avoid browser bug At the bottom of each page loaded via the .cgi script. why is this the case? How do I remove this annoying message that is appended to all pages ?

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• Running a script on startup before X starts in Ubuntu 9.10

  - by Epcylon

  I have a script that I want to run at startup to switch X-configs depending on location, but I can't seem to find out where to put it in order to get it to run before X is started. This results in me having to restart X to get it to run the correct config. Currently, my script is located in /etc/init.d/whereami, with symlinks in /etc/rc[2-5].d/S25whereami. I was trying to find out when X is started, in case the problem is simply the 25, but I can't seem to find the answer... Any help is appreciated.

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• I don't have a free PCI / PCI-e slot, can it be worked around?

  - by Borek

  I need to add a PCI(e) card to a nettop PC that is so small that the card won't fit there (and there is no external alternative like we're used to with external TV tuners). The only ports available are USB and eSATA, is it possible to somehow "dock" the PCI card into some device that would then connect to the PC via USB or eSATA? Or am I out of luck? (I don't mind the solution being visually ugly, I wouldn't even mind opening up the case and soldering some wires in, anything that would work would be great.)

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• How to control routes added by RasDial

  - by Robert Dodier

  I am using the RasDial function on a Windows box (Windows Server 2008) to dial a device from which the server then reads data. It seems that some new routes are added to the network routing table when the dial-up connection is made. That interferes with other network interfaces on the server. In particular, RasDial adds a default route which routes traffic to the device, which makes the server unreachable until the connection is dropped. Is there a way to control which routes are added by RasDial? I have been studying Microsoft's document for RasDial and associated items (RASDIALPARAMS, RASDIALEXTENSIONS) without finding anything about routing. There is an option for "Use default gateway on remote network" when configuring a VPN, but I don't see how to apply that in this case. Thanks for any light you can shed on this problem.

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• Access denied for user who has full access to some files in their own folder

  - by steve02a

  I have a very similar case as this user: Access denied on some files on Win2008R2 DC share This is on a windows 2008 R2. The user has Win7 pro. The user has their own home folder on the server. Every file, except one, the user can read/write/modify at their own will. No problems - except this one file. She gets "access denied" I can open it (as domain admin). Another user can open it (because she's in the domain admin group). I did run the AccessEnum tool and the read/write permissions are all identical for all files. So, I can't explain why the user can't open this one single file. Out of all her files in sub-folders and such. No problems. This one file is causing a headache. What do you think could be wrong here?

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• Configuring network to set wlan0 as primary

  - by Sheed

  I recently had to rebuild my pc and decided to go for ubuntu 14.04. I think the mistake I made was I started from a 12.04 install disk instead of the 12.10 disk I'd used previously and when given the option set my primary connection as ethernet (because the wireless option didn't work). After upgrading to 14.04 etc, I managed to get the wireless working, or more using steps like ifconfig -a and the likes I managed to prove that the wireless card etc. is all installed and working. However every time I boot without a hard wired connection plugged in I get the message "waiting for network configuration". I can then once it's booted without a network get my wirless working using sudo ifconfig wlan0 up iwlist wlan0 scan This seems to kick the wireless module into life and it appears in the GUI and I can then select a network, however all the options like edit network and disconnect etc are all greyed out. What I would like of course is if the WLAN0 was just set as my primary default network so I've been looking for a solution to this and it would seem that I need to adjust the old /etc/network/interfaces file but when I try to do so using the sudo vi /etc/network/interfaces command I, well I simply have no idea what I'm doing. Other than that typing :q! gets me out of there before I do to much damage! As far as I can tell (by navigating to the file in the GUI) the output of my /etc/network/interfaces is as follows: (obviously not including the " in each line that's just to break the heading rule of the #) "# This file describes the network interfaces available on your system "# and how to activate them. For more information, see interfaces(5). "# The loopback network interface auto lo iface lo inet loopback "# The primary network interface auto eth0 iface eth0 inet dhcp If this is the case then this clearly doesn't contain what it should do but I don't how to fix it. Nor do I even know if I'm on the right track. Any help would be appreciated thanks :)

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• Replace values in column, space delimited file in Vim

  - by user1256923

  I have a file that looks like: 2067 24311 <hkxhk> {00} 2069 17219 <hkxhk> {00} 2071 20931 <hkxhk> {00} 2073 5557 <hkxhk> {00} 2075 2127 <hkxhk> {00} 2077 20947 <hkxhk> {00} 2081 18088 <hkxhk> {00} I want to replace the first column value so that it looks like 5 24311 <hkxhk> {00} 5 17219 <hkxhk> {00} 5 20931 <hkxhk> {00} 5 5557 <hkxhk> {00} 5 2127 <hkxhk> {00} 5 20947 <hkxhk> {00} 5 18088 <hkxhk> {00} Where the first space delimited column has been replaced by a new value, in this case 5.

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• Mac OS X: What is using my 'active' memory?

  - by badkitteh

  Hello fellas, I'm using a recent MacBook Pro with 8 GB of RAM and after a few hours of using it at work I notice the amount of 'active' memory growing and growing. Whenever I reboot my Mac, everything looks fine and it is hardly using any RAM. But after a few hours it looks like this: As you can see, in this case it's about 4.3 GB. Being a developer, I know that 'active memory' is the amount of memory that is currently used by running processes. So the first thing I did was quitting all applications and killing all processes that don't seem to belong to Mac OS X. After I did that, my active memory came down about 400 MB, but got stuck at what you see in the screenshot. There are no more processes or applications to quit. Now I'm wondering what is actually holding on to the memory? top and Activity Monitor don't report any processes with a high memory usage. Any ideas? Thanks!

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• Ubuntu server 9.10 freezes up after ~10 minutes - unconventional

  - by L33tCh

  There is a topic by essentially the same name, but my answer leads to another question which I would like answered so... My case is as follows: I connect through SSH to my server... no problems for many months on Ubuntu Server 9.04. Eventually I decided to updgrade and straight away I get the 10 minutes freeze problem. I went through all the possible fixes (many can be found here but my quick fix, the only that worked, leaves me with no real answer as to why and how to properly correct it... As ridiculous as it sounds... while I leave a keyboard plugged in... it runs without flaw. Can anyone make sense of this? For the sake of completeness, (although none of the following made any difference upon subsequent completion), some of the permanent changes I have made while trying to correct the issue are: replacing samba config file with 9.04 backup, booting with noapic and modifying sysctl.conf, just uncommenting additional settings for enhanced security.

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