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  • Change default root user with a new one on Ubuntu Server

    - by MultiformeIngegno
    I have a VPS, until now I used the default root user for SSH access and everything. For security reasons I'd like to use a different user for root, terminal access and sudo operations. So I created another user, gave him the sudo and every other perm. The problem is that all the system files belongs to root. What happens if I set PermitRootLogin No for root? Those files wouldn't be editable by the new root user!

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  • How can I automate my Linux computer to power off (and on preferably) under certain circumstances?

    - by Ashimema
    OK, So a little background; I've been using Windows Home Server as a Backup Appliance, Media Server and Share Server at home for some time. I decided it was costing me allot of juice so very early on added the "Lights Out" add-on to ensure it was only running as and when needed. I'm now looking to switch to a Linux based server and I'm looking for a similar tool/set of tools for advanced power management. Now the question; Anyone got any all-in-one suggestions (i.e with client parts for both Windows and Linux and a server part for the Linux server), or can anyone simply verify that I'll need to set-up all the individual bits for this myself separately? (A tool similar to "[SmartPower][2]" but for linux would be a great start)

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  • cannot change theme and desktop background in ubuntu 10.04

    - by Nrew
    I tried to follow this tutorial frome ghacks.net. But I end up with a bug. Everytime I try to change the desktop background or the theme. It opens up lots of folders. And then close it back again. So I cannot do anything when I try to change the background or the theme to the default. Here is the tutorial And I can't even shutdown my machine now, please help.

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  • Enable System Beep in Ubuntu

    - by Melissa W
    I have tried and tried to get the system beep working, but with no success. I have selected System--Sound--System Beep--Enable Audible Beep (from the Gnome Desktop) I have tried from a Terminal window Edit--General Tab--Selecting terminal bell checkbox I have tried entering modprobe pcspkr at the command line. Trying echo -e '\a' or using the beep application - Nothing works! I know my hardware speaker works, because if on startup the battery is low it will beep. Update: It is a laptop computer. It is an IBM Thinkpad, iSeries. I did look at the modprobe blacklist, and pcspkr was not listed.

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  • Movie colors are off on ubuntu

    - by chris
    I've been playing with a new SLR that also happens to record movies. When I try to view a movie using Movie Player, it plays fine, and the sound is there, but the colors are off - green grass is purple, and my golden retriever is a blue retriever. VLC reports that the file is broken, offers to repair it, and plays it with the same problem. The same file plays fine under WinXP with both Media Player and Quicktime, and with no problems under MacOS also with Quicktime. What's the problem, and how can I fix it?

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  • Uninstall nginx on Ubuntu 10.04.3 LTS remote machine

    - by user831740
    I was given a server to setup, problem is this server was no reset, and the provider is quite slow on resetting it, so I have to completely uninstall some stuff it has, one of which is nginx. I had a few problems when doing setup on my local machine for nginx due to multiple installations of it, so I want to avoid the same mistake now. Problem is, I got no idea how nginx was installed here, and I need to remove it. When I access the server thro SSH i only have this folder $HOME/backups/nginx any idea how to uninstall this? Whenever I google it only come up with apt-get uninstall and so forth. Thank you

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  • Can't ssh from Ubuntu to RHEL or CentOS

    - by Alex N
    I am trying to setup publickey based authenitcation for 2 different boxes. One RHEL another on e is CentOS. I am having same issue with both where ssh fails and falls back to password based authentication. Error that seems to be causing this is quite obscure: debug1: Unspecified GSS failure. Minor code may provide more information Credentials cache file '/tmp/krb5cc_1000' not found Both boxes are completely unrelated. I have my public key in .ssh/authorized_keys file on both boxes, all permissions are checked and good(700 for .ssh and 600 for internals) I have bunch of other servers that are running on various flavors(Gentoo, Fedora, FreeBSD etc.) and publickey ssh works just fine, but CentOS and RHEL giving me this for some reason :( Anyone experienced this before? I am not even sure how to further analyze this issue :(

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  • Ubuntu 10.04 network manager issues

    - by Shark
    I was using the default network manager to connect to my wi-fi network, but if the connection is dropped or router restarted the network manager wont reconnect automatically after i guess a couple of tries and just gives a pop-up to connect manually . To avoid this annoyance I installed WICD but though it does try to reconnect to the network after a drop in connection it is unable to resolve the ip address and i am left with an even bigger annoyance . 1. Is there a way to counter either of these issues ? 2. Something like a background process that will check network status periodically and then try to connect to a favored network ? Edit- out put of lshw -C network *-network description: Wireless interface product: Broadcom Corporation vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:12:00.0 logical name: eth1 version: 01 serial: c0:cb:38:18:9b:7f width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=wl0 driverversion=5.60.48.36 ip=192.168.11.2 latency=0 multicast=yes wireless=IEEE 802.11 resources: irq:17 memory:fbc00000-fbc03fff *-network description: Ethernet interface product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:13:00.0 logical name: eth0 version: 02 serial: f0:4d:a2:94:2d:74 size: 10MB/s capacity: 100MB/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10MB/s resources: irq:29 ioport:e000(size=256) memory:d0b10000-d0b10fff(prefetchable) memory:d0b00000-d0b0ffff(prefetchable) memory:fb200000-fb21ffff(prefetchable)

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  • mySQL sphinx Index location on Ubuntu

    - by Marcus Morris
    I am trying to test out a Sphinx cookbook, but I need a database to do so. I have created the database locally, but I need to know where the default path is for the index of the table I created. This is the error I am currently getting when trying to run sphinx because the path to the index is wrong: WARNING: index 'phoneindex': preload: failed to open /var/lib/mysql/mysql.sph: No such file or directory; NOT SERVING FATAL: no valid indexes to serve Where can I find mysql.sph? Or how/when is that file created? Thanks!

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  • Mail being sent as root on Ubuntu 14.04

    - by Benjamin Allison
    I'm really struggling with this. I'm trying to set up this server to send mail using Gmail's SMTP. Google keeps bouncing the messages, saying that that Authentication is required: smtp.gmail.com[74.125.196.109]:25: 530-5.5.1 Authentication Required. Learn more at smtp.gmail.com[74.125.196.109]:25: 530 5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 But it seems my server is trying to send mail as [email protected]. I'm baffled. Here's what I've done so far: Updated mail.cf relayhost = [smtp.gmail.com]:587 smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_tls_CAfile = /etc/postfix/cacert.pem smtp_use_tls = yes Created /etc/postfix/sasl_passwd: [smtp.gmail.com]:587 [email protected]:password Then did the following: sudo chmod 400 /etc/postfix/sasl_passwd sudo postmap /etc/postfix/sasl_passwd cat /etc/ssl/certs/Thawte_Premium_Server_CA.pem | sudo tee -a /etc/postfix/cacert.pem service postfix restart I can't for the life me get a mail message to send, or change the default mail user from [email protected] to [email protected] (FWIW, I'm using Google Apps, that's why it's not a .gmail address).

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  • Limited connections to Ubuntu 12.04 server

    - by Luis M. Valenzuela
    I'm having a weird problem with my server. The server is inside my network, connected to a 3com switch which is connected to the router that handles the internet connection. The main purpose of the server is to host a php application. What's happening is that user 1 to 15 in the private network have no problems connecting to the server, when user 16 tries to connect a time out comes out and is unable to connect to the server. It's not just to the php application, but to any service from the server. When the 15 users are using the application, the server doesn't even answer to ping. I haven't set any special limit in Apache's ini file or MySql and the firewall is being turned off because the server is only to give service to the internal network. Is there a parameter in any of the network's card conf. files that might me causing this ? Or should I suspect from the router's or switches configuration ? UPDATE. Tomorrow, I'm gonna do some test on the server modifying two kernel params in : /etc/sysctl.conf The settings are: net.core.somaxconn which has the limit on simultaneous network connections to the server and kernel.shmmax which controls the amount of memory the system can use for managing connections.

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  • `adduser [options] user group` fails ubuntu 11.04

    - by Rob
    I'm want to use adduser However it doesn't seem to work if I provide the second argument for the user's group root@a:~# adduser rick staff adduser: The user `rick' does not exist. The group exists root@a:~# addgroup staff addgroup: The group `staff' already exists. The man page says this should work... adduser [options] user group Any ideas? I can do: adduser --ingroup staff rick So no massive issue, just seems strange.

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  • How to mount a drive in Ubuntu from terminal

    - by Mirage
    hi, I want to mount a drive from terminal at start up. At start if i use ls /media then its empty but if i go to computer and then click VM drive there and after that i use ls /media then it shows VM drive . How can i mount that drive at from terminal something like mount VM or how can find the path of VM like /dev/sda or something

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  • How to boot more than 1 linux distro along with windows?

    - by BD at Rivenhill
    I have a machine that currently has Windows Vista living peacefully with Ubuntu 10.04 but I would like to test out another distro outside of a virtual machine without destroying my current Ubuntu or Windows installs. Is this possible? If so, any recommendations on how to arrange the partitions? I was thinking of moving user home areas to a separate partition and having 1 partition for all Ubuntu files and 1 for all files associated with the other distro.

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  • Simple local smtp server - minimal setup ubuntu

    - by malatio
    What is the absolute, bare minimum, no-hassle, hopefully idiot-proof way of setting up a local smtp server? If you're going to say postfix, what are these alledgedly bare minimum, idiot proof steps to setting it up? I'm sort of amazed at how difficult it seems to find this anywhere. I need: a locally hosted smtp server that sends mail to the internet. no tls or saslauth or whatever. only allows mail to come from localhost. no relays. It seems like there should be some software package somewhere where you install, set up an account and then you have a local smtp server. I'm not a sysadmin. People say postfix is dead simple but maybe I'm doing it wrong, all the setup docs I see are quite complicated, I actually don't have a spare hour to spend debugging a mailserver. I just want to send mail to the internet. Is it really that hard?

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  • Ubuntu display warning before shutdown over ssh

    - by gshankar
    Ok I admit it... I stupidly shutdown my remote server via ssh instead of restarting it like I wanted to do :( To prevent me doing a silly again, is there a way to display a warning / confirmation on a shutdown command? (like "Are you sure you want to shut down this server?" yes/no ) OR, can I not allow shutting down (but not restarting because I still might need to do that from time to time) over ssh?

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  • Ubuntu apt-get install (--download-only) executed from another machine on behalf of mine

    - by Maroloccio
    I have a server on a network segment with no direct or indirect access to the Internet. I want to perform an: apt-get install <package_name> Is there a way to somehow delegate the process of downloading the required files to another machine by exporting the server configuration so as to satisfy all dependencies while running: apt-get install --download-only <package_name> Can, in effect, apt-get install read a configuration from an exported archive rather than from the local package database? Can the list of packages to be downloaded be retrieved, along with an installation script to perform the installation, instead of the actual packages? (a further level of indirection which would help me schedule this with wget at appropriate times...)

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  • save filled form in pdf file in ubuntu

    - by Tim
    Hi, I would like to save a pdf file with filled out interactive form. In evince or acrobat reader, "Print to file" can create another pdf file but the form is not editable any more. Is there some way to save the edit and keep the form interactive for later editing? Thanks and regards!

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  • Ubuntu Server Edition (Jaunty) x64 Segmentation faults in PHP mysql package

    - by Deeksy
    I've been running Jaunty with Apache2, PHP & MySQL running drupal websites as well as python 2.6 and trac on the same server. I'm getting quite a few segmentation faults and suhosin warnings on my drupal websites which don't seem to be related to the amount of RAM the server has (3GB) as the trac site is running happily without issues. The issue seems to be related to PHP accessing mysql and I'm getting suhosin warnings. Has anyone else seen this problem? Any ideas on how to fix it? Funnily enough, it's not a consistent error, as restarts tend to fix the issue temporarily.

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  • Running ubuntu 10.04 without a laptop's primary display

    - by riteshmnayak
    I have an IBM thinkpad(R50e) whose display is broken. I would still like to use the laptop by connecting it to an external monitor and keyboard/mouse. This is what I did: Removed the hard disk from the broken IBM Put the hard disk in the working IBM and installed 10.04 on it. It booted fine and I installed many packages and stuff. I put the hard disk back into the broken display IBM thinking I could use it by connecting it to an external monitor that I own. Well, it turns out that while booting, the display shows up but because the display shifts from the VGA display to the primary display mid-boot, the laptop does not boot. Is there a way in which I can force the laptop to not use its primary display while booting. I looked at Randr and also grub.conf settings but nothing seemed to work. Please help!

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