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  • Best way to keep configuration for server reinstallation?

    - by Gunnar
    I have a server at home running Ubuntu 12.04 which has grown messy over the years. I have fiddled with various packages, desktop environments (for VNC) etc. and I would like to reinstall it to start again, and have better control over what goes into the box. But I want to keep much of the configurations after reinstallation, like LVM configuration, apache2, samba, etc etc. There would ideally exist a program which could analyze /etc, installed packages and such, store the information, and selectively put it back into the new installation. I am even considering installing Ubuntu server on a virtual machine, just to be able to compare the contents of /etc with a clean installation, and even perform a migration to the virtual machine first, to verify that the transfer process works. How do one go about performing this kind of reinstallation? Have anyone seen any resources on the net on the topic?

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  • How can I start nginx via upstart ?

    - by Chiggsy
    Background: DISTRIB_ID=Ubuntu DISTRIB_RELEASE=10.04 DISTRIB_CODENAME=lucid DISTRIB_DESCRIPTION="Ubuntu 10.04 LTS" I've built nginx, and I'd like to use upstart to start it: nginx upstart script from the site: description "nginx http daemon" start on runlevel 2 stop on runlevel 0 stop on runlevel 1 stop on runlevel 6 console owner exec /usr/sbin/nginx -c /etc/nginx/nginx.conf -g "daemon off;" respawn I get "unknown job" when i try to use initctl to run it, which I just learned apparently means there is an error, ( what's wrong with "Error" to describe errors?) Can someone point me in the right direction ? I've read the documentation , as it is, and it seems kind of sparse for a SysV init replacement... but whatever just need to add this job to the list, run it, and get on with what's left of my life... Any tips? EDIT: initctl version init (upstart 0.6.5)

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  • change owner/uid of mount point upon mount

    - by Shiplu
    The scenario is like this. Bob has a computer. It crashed. Now he only has the hdd. The hdd is in ext3 format. He go to his office and told the sys admin John to mount this hdd and put the mount point in his home directory. John used the following fstab entries. # Bobs harddisk /media/TAPE4/Bobs-hdd.img /home/bob/myhdd/windows ntfs ro,loop,offset=32256 0 0 /media/TAPE4/Bobs-hdd.img /home/bob/myhdd/linux ext3 ro,loop,offset=14048810496 0 0 /media/TAPE4/Bobs-hdd.img /home/bob/myhdd/extra ntfs ro,loop,offset=28015335936 0 0 Bob was happy. He could access his old extra and windows. Specially the Documents and Settings in windows was helpful for him. But he found a problem. He is a web developer and all his websites are in linux/home/bob/public_html directory. When he tried to access that public_html directory he got permission_denied. He executed ls -lh he saw this. drwxr-xr-x 2 john john 4.0K Nov 9 2011 Desktop drwxr-xr-x 3 john john 4.0K Aug 12 2011 Documents drwxr-xr-x 3 john john 4.0K Aug 21 2011 public_html He contacted John thinking he might be mistakenly did this. But John couldn't find a way why this happend? Then one thing came into his mind file system hardly store username. They store uids. So he executed ls -ln drwxr-xr-x 2 1000 1000 4096 Nov 9 2011 Desktop drwxr-xr-x 3 1000 1000 4096 Aug 12 2011 Documents drwxr-xr-x 3 1000 1000 4096 Aug 21 2011 public_html John thinks 1000 is the first uid on a linux system. As he is the admin of the current system. He created his account first. so Johns uid was 1000. Bob also setup his private system and crated his account first. So Bobs uid was 1000 too. So thats an expected behavior. But problem remains. How can Bob access those websites in public_html?

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  • Linux Under The Spotlight As We Prepare For A Chaos Bound National Elections

    <b>Tech Source:</b> "With less than a few days to go before the Philippines will hold its first ever fully automated national elections, it seems like we're in for a really bumpy ride. Serious, embarrassing, and idiotic technical glitches were discovered while testing the Precinct Count Optical Scan (PCOS) machines that will be used to count votes for the polls."

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  • How to check if a file is a DLL?

    - by PierreBdR
    Given a file, I want to check if this is a DLL, or a shared object (Linux) or a dylib (Mac OS X), or something different. My main interest is differentiating executable and DLL on Linux and Mac OS X. For windows, the extension should be enough for my problem. I already checked that the magic number technique doesn't work for Linux as executable and shared objects both have the same number.

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  • Aircrack-ng, is it illegal?

    - by Jasen
    I just found out about this linux-based network toolset called aircrack-ng, and its pretty interesting, and I'm learning how to use it. But it just occured to me, that like a lot of linux programs, they're developed in foreign countries, with different laws. I did do a google search, and the only thing in regards to what i am asking that pops up is a question on another site. So, my question is, is it illegal in America, specifically Ohio, to use this program? I mean i know it has a legitimate purpose, but so does hemp. Also, sorry if this is the wrong place for this question, but I'm not exactly sure where it should go.

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  • Kickstart installation: Unable to read package metadata.

    - by yacov
    I'm trying to install a CentOS OS with kickstart using HTTP as the installation source. The kickstart server and the installed server are both running on VMs on the same machine. after the anaconda system installer starts it fails with the following message: I tried installing two different versions of Centos(5.5 and 5.2), and they both pass a CDROM media test the manual installation provides. The only errors on the kickstart server side are some errors in the httpd log I consider irrelevant: [Sat Mar 12 23:25:19 2011] [error] [client 192.168.1.112] File does not exist: /tftpboot/linux-install/platforms/CentOS5.5/images/product.img [Sat Mar 12 23:25:19 2011] [error] [client 192.168.1.112] File does not exist: /tftpboot/linux-install/platforms/CentOS5.5/disc1 I tried searching the internet for days and haven't found any solution... Does anyone have any idea?

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  • 7 of the Best Free Linux Bible Software

    <b>LinuxLinks:</b> "Now, let's explore the 7 Bible software at hand. For each title we have compiled its own portal page, providing a screenshot of the software in action, a full description with an in-depth analysis of its features, together with links to relevant resources and reviews."

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  • Linux : le kernel 2.6.34 est stable, il introduit deux nouveaux systèmes de fichiers pour remplacer

    Mise à jour du 18/05/10 Le kernel 2.6.34 disponible en version stable Il introduit deux nouveaux systèmes de fichiers pour remplacer le ext4 et gérer la mémoire Flash Le kernel 2.6.34 est à présent disponible en version stable. Trois mois après la précédente version majeure du noyau (cf ci-avant), ce nouveau kernel propose deux nouveaux systèmes de gestion de fichiers. Le premier est issu du projet Ceph et sépare les données des méta-données. Ce système de fichier distribué peut faire penser à Lustre d'Oracle (utilisé par exemple dans les supercalculateurs). Même si Ceph, toujours assez expérimental, n'est pas aussi per...

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  • Ubuntu's Lucid Lynx Linux OS Debuts With an Eye on ISVs

    <b>Serverwatch:</b> "What's really exciting is the ecosystem support that we've seen around this release," Canonical CEO Jane Silber said on a conference call announcing the release. "With over 80 vendors announcing support for about 100 applications, that's significant and a recognition of the long term support nature of this particular release."

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  • When a python process is killed on OSX, why doesn't it kill the child processes?

    - by Hugh
    I found myself getting very confused a while back by some changes that I found when moving Python scripts from Linux over to OSX... On Linux, if a python script has called os.system(), and the calling process is killed, the called process will be killed at the same time. On OSX, however, if the main process is killed, anything that it launched is left behind. Is there something somewhere in OSX/Python where I can change this behaviour? This is causing problems on our render farm, where the processes can be killed from the management GUI, but the top level process is really just a wrapper, so, while the render farm management might think that the process has gone and the machine is freed up for another task, the actual processor-intensive task is still running, which can lead to huge blockages. I know that I could write more logic to catch the kill signal and pass it on to the child processes, but I was hoping that it might be something that could be enabled at a lower level.

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  • How to install INFORMIX (IDS) 11.50 in CENTOS 5.4

    - by d23
    Getting ERROR: The wizard cannot continue because of the following error: could not load wizard specified in /wizard.inf (104) Solution: Uninstall everything related with java and jre. Then, download the lastest version of jre for linux x86 or x64, rpm.bin one. And follow these instructions http://www.java.com/en/download/help/linux_install.xml "To install the Linux RPM (self-extracting) file". Make a user and group informix (as root), then uncompress the (informix package).tar in /opt/informix that you have created. And tun ./ids_install, and GUI will work ok. Hope it helps.

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  • Incremental backup services with change only charges?

    - by wowowewah
    I'm looking for online backup services that provide incremental, change-only backups. I'm looking to transfer as little data as possible and would like to find a service that provides full backups every week along with incremental backups every day. Are there any specialist companies that deal with this or do I just use standard backup ones? Any recommendation appreciated. To expand on this Im looking for software/services which work on Unix. I guess Linux is fine aswell as FreeBSDs Linux compatibility layer should run it. Oh and command line would be ideal and not require the use of X Window. Thanks.

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  • Best filesystem choices for NFS storing VMware disk images

    - by mlambie
    Currently we use an iSCSI SAN as storage for several VMware ESXi servers. I am investigating the use of an NFS target on a Linux server for additional virtual machines. I am also open to the idea of using an alternative operating system (like OpenSolaris) if it will provide significant advantages. What Linux-based filesystem favours very large contiguous files (like VMware's disk images)? Alternatively, how have people found ZFS on OpenSolaris for this kind of workload? (This question was originally asked on SuperUser; feel free to migrate answers here if you know how).

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  • Snow Leopard connecting to Unbuntu 10.04 through Samba failure -- need help fixing.

    - by Chris Altman
    I have a Ubuntu 10.04 web server. I want to connect to it with my OSX 10.6 machine and Finder. I have installed openSSH and Samba on the Ubuntu machine. In my smb.conf I have a Share Definition: [www] comment = Development Computer WWW path = /var/www writeable = yes browseable = yes allow hosts = 192.168.1. I can connect to the machine through Finder using a non-root user. When I attempt to add files thought Finder I get an "Insufficient Permissions" error. Please help. I am not sure if the issue is in the Samba configuration or OSX 10.6 Thank you

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  • Proper line-ending for an open-source PHP project

    - by Mahdi
    What is the proper line-ending preferences for an open-source web project? Obviously it includes source code of PHP, HTML, CSS and Javascript. The source code is managing via Github now, and there are Windows (8 & 7), Linux (Ubuntu) and OSX developers inside the team, which means all the major operating systems. P.S. We are using "Windows" CRLF line-ending, plus "UTF-8 without BOM" right now, without facing any problem, however I think it might be better to use "*nix/OSX" LF style. I heard some stories about the problems that caused by the additional "CR" on Linux or OS X.

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  • Suggestions for a SOHO/Home Asterisk system

    - by James
    I would like to buy a small embedded system that runs Linux and Asterisk. I would like two FXS ports ( to plug analogue phones into ) and one FXO port ( to plug in to my real line to allow access to the POTS ). I would like it to have a USB port to hold storage for voicemail. I really want it for home use so I would like it to be under £150 ( say $250 ), given that you can buy ADSL routers for around this much can any of them be made to run Linux and Asterisk? I don't want a PC as the power usage would be too high. I am looking for something like this ASDL router but open and able to run Asterisk or another open PBX. At worst I would like a box which had one FXO and two FXS and just made them completely available over IP to a full Asterisk system on a low power Atom system.

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  • Multiple servers acting like a single one with all the hardware?

    - by marc.riera
    Hello, by now I have 10 servers for hpc, power computing oriented. My users need to launch several processes using qmake. The users are used to work with ubuntu 9.10, and the software from the repositories is switable for them. I've deployed ubuntu 9.10 to all 10 servers (pxe rocks). By now we work with parallel-ssh and cluster-ssh, which allows as to launch the same process to all servers. With this tools this tools the servers remain as independent but with the same software and the same launched command. Now we would like to go to next step and see all the servers as a single one with all the resources from the other 9 as if was its resources. The difference would be substantial in time to process and also time to design the command to launch. Any advice on wich software to use will be very useful? Thanks

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  • Developing games using virtualization on macOS (or Linux) [on hold]

    - by zpinner
    From what I've seen, most of the gamedev tools and engines (that could generate cross platform games) are not supported on Mac. Havok/Project Anarchy, UDK, GameMaker, e.g. . Basically, the only options I found are: Unity3d and monogame + xamarin. Unity is nice and I've been playing with it for some time, but the free version is quite limited when we're talking about shaders, that made me consider that as an indie developer, I might want more freedom to experiment new things, without paying the expensive unity license. I didn't try monogame + xamarin yet, and altough XNA is a very nice game framework, I'd like to have more freedom to experiment and finish a game first before paying for the IDE, which is not possible with the current Xamarin business model. That leaves me with the thought that I must go back to windows, which I'd preferably do it partially, if it's possible. Using BootCamp is something that I'd like to avoid, since it's a pain to reboot when changing OS and that would probably force me to become a 100% windows user. Is there anyone actually developing a game using virtualization solutions like parallels or vmwareFusion? How was your experience?

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  • Using physical disk with VMware Workstation

    - by chx
    I am using VMware Workstation 9.0 under Windows 7 and trying to load my Linux from Physicaldisk0. And it boots, grub sees the two partitions on the disk (I checked in command line) and the kernel and the initrd loads and then it stops saying "device not found"and drops me into an emergency shell. Indeed there is absolutely nothing in /dev not the /sda device it expects not /hda nothing that looks like a disk. Edit: I can boot the Linux disk just fine if I boot it from BIOS and not as a VM. Edit2: The question is, how can I make this setup work?

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  • Reconnect Attempts for CIFS share

    - by Davin
    I have a CIFS share mounted in the FSTAB on Ubuntu server, which connects to our SAN and works without issue. Last night we had an issue with the SAN for about 12 hours. We corrected the problem and the Windows boxes restored their mappings. The Ubuntu box did not, but we were able to restore with [mount -a]. I saw options to specify retries in man for NFS but not CIFS. Any ideas on ensuring a reconnect if the SAN goes down again?

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