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• What differences are there between an official Ubuntu AMI image and a base install from an ISO?

  - by David Winter

  When creating a new instance on AWS using an official Ubuntu 12.04 server AMI, what differences are there compared to if I was to do a standard server install on a computer of my own? For example, the default user is 'ubuntu'. An SSH public key is added to that users authorized_keys file. Sudo is passwordless for that user. PasswordAuthentication is disabled for SSH. etc etc. Configurations have been changed from their defaults, and I'd like to know if there is a list, or somewhere I could find out the modifications made.

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• How can I make Ubuntu server always install updates without asking?

  - by Arthur Ulfeldt

  I would like to set some Ubuntu Server VM's to always pull updates (nightly) with out asking?

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• Ubuntu+Mono+Postgres+ASP.NET 4.0. No problem?

  - by wreck_of_u

  Would this be ok? I'm an ASP.NET developer and I'm planning to build "portable" web app servers based on Atom D510 mini-ITX. I have ran Ubuntu 10 with MySQL along with a separate IIS machines (win 2k3, 2k8) before with no problems. But now I'm thinking of "packaging" a web/db server into one small, cheap machine. I thought of Ubuntu/Mono/Postgres/ASP.NET, that it would be a good idea but I'm not sure? I have not actually tried it yet. Your thoughts?

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• I setup vsftpd on ubuntu server on my ec2 instance, how to connect using SSH?

  - by Blankman

  I connect to my ec2 instance using ssh so I don't have to login each time. I just installed vsftpd on the ubuntu server, but when I connect it obviously asks for my username and password. Since I connect using the ubuntu user that my AMI comes with, I don't even know the root password. Is there a way I can login via ftp using SSH? Or do I just create a user on the system for ftp purposes? I've locked ftp to my IP address, and I will shutdown the ftp service once I'm done as I dont need it running 99.99999% of the time.

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• Bash script getting automatically deleted from Ubuntu 12.04 Server?

  - by Kris Anderson

  I'm running a bash script on an ubuntu 12.04 through cron. The script works fine for a few weeks (runs daily backups of websites, mysql databases, and copies to Amazon S3). However, twice now I've noticed that backups stopped happening. Both times the backup script (backupscript.sh) located in my home folder was no longer there. No one else has access to this server, so nothing was manually changed on the server and no one deleted the file by mistake. The cron job (nano /etc/crontab) still references this script, but the script itself disappears. What could cause this to happen? Does Ubuntu delete the script if it runs into some sort of error?

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• Simple Ubuntu Server - Expanding disk space - adding a new drive LVM, RAID0 existing setup - how?

  - by NightWolf

  I have a 1TB ext4 partition mounted at / with all my data and Ubuntu 11.04 (natty) installed. Now this drive is almost full (I used it as a database server for some processing). RAID0 is ok, I can take a failure (touch wood). But I need a way to grow this partition. I have a new 1TB drive I want to add, however as my Ubuntu boot and all data is on the one partition I'm not sure how I can go about setting up a RAID0 or LVM array without loosing all my data. So the question is how can I extend my existing ext4 partition over two physical drives without losing data? Thanks!

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• I'd like to archive files from Ubuntu to Windows between two computers on a shared home network

  - by Wabbitseason

  I have an old laptop running Ubuntu 9.10 which I use as a LAMP environment for web development, and I have a comfortable, powerful desktop computer with Windows 7 installed on it. These two are connected to a home router so both can access the internet. I have been able to set up Samba so I can mount my Apache home directory so it is accessible from Windows and is mapped as a network drive. What I'd like to do is access some Windows folders from Linux so I could automatically create backups (with cron scripts) of my work to physically different locations on the Windows box. Perhaps at a later time I'd set up a local Subversion repository but I'd love to keep backups of that on the Windows drives too. Using Ubuntu's Places/Network menu I can see my desktop but I'm unable to log in to that despite having created the corrent username and password on Windows. All I can get is the following error message: "Unable to mount location. Failed to retrieve share list from server." What could be misconfigurated?

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• How to run a script in Ubuntu via SSH as superuser?

  - by Irinotecan

  So I have a script that needs to be executed remotely as root. This isn't a problem with most Linux distros since they have a root account. But since Ubuntu does not, executing anything as root requires a 2-step process of entering the account password twice - once to log in and once for sudo. The SSH process to launch the script is automated, so it cannot pause for user input for the second password request. Does anyone know, short of hacking Ubuntu to re-enable root (not an option), if unattended SSH script execution with superuser privilege on the target machine is possible? Also, having no experience with Debian, does Debian behave this way too?

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• Is (Ubuntu) Linux file copying algorithm better than Windows 7?

  - by Sarath

  Windows Copying is a real mess ever since Windows Vista. Even Microsoft claims they've improved the performance, from a user perspective, it's not quite visible. Even with single file the copying window appears too much time for 'Calculating' and then finishing the copy(Even after 100% completion some times the dialog remains active). At the same time, I was backing up some files in Ubuntu Linux. I felt it's really fast. Might be a feeling caused by faster UI updates. I read an informative post from Jeff Atwood few years back on Windows File Copying. but what my specific questions are Is (Ubuntu) Linux file performance is better than Windows-7? Are both algorithms, Windows and Linux is making use of multiple threads and pipelining mechanism to improve the speed? If yes, which one is better?

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• how do I delete my alternate drive icon on the ubuntu desktop?

  - by broiyan

  I'm on a system with a Windows drive and an Ubuntu drive (both physical, not virtual). Under the Ubuntu Places menu, there is a "320 GB file system" which is the Windows disk. The same drive also appears as an icon on the desktop (but unlike everything else on the desktop, it does not appear in the directory listing of ~/Desktop). I think the icon was put on the desktop by accident and I never use it because the Places menu suffices. How can I delete this icon? Selecting then deleting does not work.

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• Any good resources on setting up an ubuntu virtual machine for web development?

  - by Relequestual

  I'm currently on my placement year at uni with 4 months left. Before working at my current place, I have not used a nix environment for web development and have used WAMP. Over the past year I have found some very interesting new tech that requires a bit more than my shared hosting even to play with (eg node.js, RoR 3). At work we use a Virtual Machine for development, but that's all been set up and configured to match the live servers, and is managed with a Puppet server. Are there any really good resources for setting up and configuring an Ubuntu VM as a web server? Work currently uses Ubuntu so I would assume this is a good OS to use. I do of course know how to use google, but the noise ratio is just too big, so thought I'd ask here, as I know many of you will have a ton of bookmarks. Cheers.

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• Where to set java heap options (e.g. -Xmx) for Tomcat 6 under Ubuntu 9.04?

  - by Chris

  I'm running Tomcat using the tomcat6 package from Ubuntu 9.04, which makes a daemon out of Tomcat using jsvc. I'd like to know the proper way to set Java heap options like -Xmx for Tomcat. I'd like to put the configuration wherever is most stylistically correct, and wherever is least likely to be overwritten by Ubuntu package updates. The options I see right now: Hard-code them somewhere in /etc/init.d/tomcat6. Hard-code them somewhere in /usr/share/tomcat6/bin/catalina.sh. Create a line in /usr/share/tomcat6/bin/startup.sh to set CATALINA_OPTS to have the desired flags, and then export CATALINA_OPTS as an environment variable. (This looks like it will get picked up by catalina.sh.) The last option sounds like the best one, and it's advocated (without explanation of why) at http://serverfault.com/questions/121038/increasing-javas-heapspace-in-tomcat-startup-script. But I wanted to get a second opinion. Anyone want to confirm that there isn't a better way?

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• Is there a "restore point" in Linux (Debian/Ubuntu) like Windows?

  - by Somebody still uses you MS-DOS

  I'm working directly in an Ubuntu Virtual Machine (VM). Some updates (like kernel) were available at the update manager. If I weren't using a VM, I wouldn't update it since it's a risk to break something. Since it's a VM, you can create a Snapshot or export an appliance and restore if something goes wrong. Suppose I'm not using a VM with a Debian/Ubuntu installation. Is there a install-restore approach that doesn't depend in a VM configuration to restore your system exactly before an upgrade (Like a "Restore Point" in Windows), being easy to restore like a VM appliance? (I'm not looking for "ghost images" or something like that (Norton Ghost, Clonezilla, etc), I'm looking for something builtin in the Linux System)

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• suddenly cannot mount nfs share from windows 7

  - by bing

  I recently reinstalled my file server (moved from fedora to ubuntu server). Now I cannot mount my nfs share from windows 7, mounting from mac osx works fine. In windows I either keep getting "the semaphore timeout period has expired" or "an unexpected error has occured". Does ubuntu need some special magic to allow windows 7 to mount an nfs share? This is my exports file /home/bing/ 192.168.1.*(rw,async,insecure,no_subtree_check) /home/bing/mnt/EXTRN2 192.168.1.*(rw,async,insecure,no_subtree_check) /home/bing/mnt/EXTRN3 192.168.1.*(rw,async,insecure,no_subtree_check)

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• Will Windows 7 setup overwrite Windows 8 and Ubuntu boot records?

  - by Jens

  I have Windows 8 and Ubuntu installed, both an the same physical hd (2 partitions). Windows 8 was installed after a format, Ubuntu afterwards. I used EasyBCD to setup the boot records and the boot menu order. I want to install Windows 7 as a third operating system and just add its boot record with EasyBCD. Will there be any unwanted behavior when I install it on a third partition? I already have 100 GB of unallocated space on the disk, though have not yet made the partition. I red on this site that I should install the oldest OS first, but than I would have to do a format and start again from scratch (which I clearly do not want to do). edit: On this site, the opposite is claimed, saying it's also possible to install Windows 7 after Windows 8. However, it will restore a Windows 7 boot menu instead one of Windows 8.

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• Reasonably Secure Alternative to Poptop PPTP Server for Ubuntu server and Windows clients?

  - by wag2639

  I have a poptp server running on a old Fedora server but I'm upgrading to an Ubuntu 10.04 server. I was wondering if there are any good, reasonable secure alternatives to poptop that in can install on our new Ubuntu server as a way to get VPN access from Windows clients (XP and 7) to get remote access into our Intranet. We only use the VPN to access files located inside the network; we do not need to use it as a proxy/gateway. I've looked into openVPN but it seemed way too complicated and I would prefer something built into Windows. A Windows 7 only solution is OK.

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• can I create disk partition for dual-boot Ubuntu on Windows 7 machine without Windows reinstall?

  - by EndangeringSpecies

  I want to setup dual boot Ubuntu on my machine in a separate partition. Plus, ideally, I want to get another, 3rd, partition for further OS experimentation. The hard drive is huge, hundreds of gigs, and essentially unfilled. The machine runs Windows 7 Home. Online I have seen mention of creation of partitions from inside Windows 7. But, I have also heard claims that to create the partition to house Ubuntu Windows has to be reinstalled, frying all the data on the machine. So, which one of these claims are right? Can you create additional partitions for other OS on a big Windows 7 hard drive without reinstall?

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• How to install ubuntu OS using an android mobile as a usb drive?

  - by Rochelle Canale

  I just want to ask if How can I install Ubuntu OS from android phone? I have the ubuntu.img and .md5 file. But I don't knwo how to run this. I also have Linux installer and VNC. Everytime I launch the application the terminal emulator always force close. So I think that there's an error with the application. Any idea how can I install this? I am using myphone A848 duo same as Noir A6 and micromax A68.

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• Access a windows dynamic hard drive through a virtual machine on ubuntu?

  - by Enigma

  I have a Windows 7 OS and am thinking about transitioning to a dual boot set up with Ubuntu 12.04. From what I recall, it is not possible to natively access Dynamic Windows Partitions in a Linux OS. My thought is that it might be possible to have a virtual machine (running windows) installed within Ubuntu access the physical dynamic drive. The problem comes to whether VMWare can access the physical disk "high enough" to be able to mount it within the windows virtual machine as a native device or if it gets passed through from the native Linux OS. This is really the only thing holding me back from switching to a dual-boot set up as the dynamic disk is made up of 4 or 5 hard drives and I would very much like access to the data on both OS's. Alternatively, is there another solution for combining multiple physical hard drives into one virtual hard drive that would be readable on both OS's?

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• How to setup a simple Ubuntu Server Tomcat cluster on VirtualBox for testing?

  - by Alex Pakka

  I am looking for a step by step instructions to setup at leat two (and later more) simple Ubuntu Virtual Core 12.10 Server VMs on Oracle VirtualBox under Windows 7 64bit. The test setup would be: Apache HTTP server on the Windows host acting as a Load Balancer. The result will be that going to http://localhost:8080 would balance between two nodes and prove session replication. Two lean, small footprint Ubuntu Server guest nodes with Java 7 and Tomcat 7. The intention is to help everyone doing High Availability / Load Balancing development and testing to create a reasonable environment on the local workstation or mainstream notebook in as little time as possible.

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• VM VirtualBox, Ubuntu 9.10: USB memory stick and SD card not detected...

  - by vikramtheone

  Hello Guys, I have installed Ubuntu9.10 on VM VirtualBox, on my HP laptop. My laptop has several USB ports and also a SD card port. Unfortunately, I'm unable to access both, my pen-drive on the USB port and my 8GB SD card inserted in the SD Card port. Can anyone suggest me what I should do for my Ubuntu to detect both of them? I have installed all latest updates on Ubuntu. I'm able to use my USB mouse. Thank you Vikram

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• getting error : make: *** /lib/modules/2.6.31-20-generic/build: No such file or directory on Ubuntu

  - by user36637

  getting error : "make: * /lib/modules/2.6.31-20-generic/build: No such file or directory " on Ubuntu 9.1 , When trying to install My wifi card driver and run make command

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• Ubuntu+Mono+Postgres+ASP.NET 4.0. No problem?

  - by wreck_of_u

  Would this be ok? I'm an ASP.NET developer and I'm planning to build "portable" web app servers based on Atom D510 mini-ITX. I have ran Ubuntu 10 with MySQL along with a separate IIS machines (win 2k3, 2k8) before with no problems. But now I'm thinking of "packaging" a web/db server into one small, cheap machine. I thought of Ubuntu/Mono/Postgres/ASP.NET, that it would be a good idea but I'm not sure? I have not actually tried it yet. Your thoughts?

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• Why am I having trouble loading Ubuntu alongside Windows as an application?

  - by STEVE PEAVEY

  I have two good CD ISO files. Both load OK, but when I boot to Ubuntu the screen is fragmented by dozens of white lines. Program works but is useless. I'm running Windows XP SP3 on D201GLY MB, CELERON CPU 220 1.02 GHZ, 512 RAM What could be my problem? CPU? Not enough RAM? Or maybe even the graphics card? to be clearer i am trying to load either ubuntu 8.04 or 9.04 inside windows as an aplication from known GOOD cd's. trying to load with the wubi installer that is loaded on the cd's. sis mirage graphics 32mb vid prosser sis 662.

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• How can I change the default keyboard layout in Ubuntu 10.10?

  - by startoftext

  Ubuntu keeps detecting my keyboard layout as Romanian. It almost always does this on a reboot and some times on waking from sleep. Some times it just randomly changes back to Romanian while the computer is on. I always set it back to "USA" in the keyboard preferences and delete the Romanian layout. What files configure this in Ubuntu? I looked in xorg.conf and did not find any keyboard settings. How can I set this to USA permanently? I have a laptop with a typical US layout built in keyboard and I also have an apple keyboard that is also US layout connected via USB. I have run other distributions on this same setup before and never had this happen.

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