Ubuntu is a free open source operating system based on the Debian GNU/Linux distribution. Consider using http://askubuntu.com/ to ask questions about it.

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How to protect authorized_keys file?

I have setup key-based-only SSH login (and denied root login) to my Ubuntu server ls -l /home/ernest/.ssh shows this: -rw------- 1 ernest ernest 405 Dec 14 09:17 authorized_keys Is this means that ...
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1answer
4k views

setup L2TP on Ubuntu 10.10

I'm following this guide to setup a VPS on my Ubuntu VPS: http://riobard.com/blog/2010-04-30-l2tp-over-ipsec-ubuntu/ My config files are setup as in that guide, openswan version is 2.6.26 I think.. ...
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0answers
16 views

unable to login to ubuntu through putty

On most occasions, I am unable to connect to Ubuntu server through SSH, which says access denied. However, sometimes it does connect and after some seconds, goes inactive. The Ubuntu server is a ...
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1answer
1k views

Trouble getting Ubuntu 12.04 Hyper-V guest to connect to wireless from Windows 8.1 Host

I'm trying to set up a Ubuntu 12.04 VM using Hyper-V in a Windows 8.1 host. It runs mostly fine, except that I can't get the internet to work well. I've followed the instructions at ...
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1answer
19 views

GnuPG in Thunderbird w/ Enigmail on dual OS machine

I am running a computer with two OS, namely Ubuntu 14.04 and Windows. I'd like to write encypted Mails from both OS, which runs well (i.e., every program needed is installed). The only problem I have ...
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1answer
2k views

ubuntu server in a vm, can't connect to internet

I'm attemtping to host my own development web server in a virtual box guest, Ubuntu Server. I would like this virtual machine to be accessible from not only my home network, but outside the LAN as ...
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2answers
195 views

Why does the 'vi' command open 'vim' editor?

I am using Ubuntu 12.04. Not that I am complaining as I like my vim and prefer its many features. However, I’m curious as to why it does it. It is not aliased in .bashrc or .bash_profile. I am not ...
1
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1answer
872 views

Airdrop Protocoll in Linux

I know there are already some existing posts out there but they are about Macs. So I try to reverse engineer Apple's Airdrop Protocol with a Ubuntu machine. For Mac there is a program called ...
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0answers
7 views

Dell Vostro getting no sound from headphone jack

I've just installed ubuntu on my machine which was already running win 7. Now I cannot get any sound from my audio jack when i connect an earphone. However if i can get sound from my speakers. Has ...
0
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1answer
18 views

Thinkpad x220 restore factory settings after installing ubuntu

I've been using ubuntu in dual boot for a while now and it works great. I've got a new laptop and I want to bring my old x220 to factory settings. The problem is that I can't find this option. ...
2
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1answer
24 views

How to get back hosts file after accidental deletion

I made a mistake and accidentally deleted hosts file from my system and cannot figure out how to get back my hosts (/etc/) file, when I do sudo service apache2 restart It's showing: sudo: ...
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2answers
290 views

How to boot Linux and Windows - Windows as Default OS

I have a dual boot system that works great. I have CentOS (grub) and XP 64 on one disk and XP on another disk. The Linux boot loader asks me which system to boot, but if I reboot and forget to hit a ...
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1answer
29 views

Installing packages on Ubuntu 13.04 after end of life

So I'm aware that Ubuntu 13.04 has reached end of life, ignoring the fact that I should update to the latest version for the best support, is there a way (aside from apt-get install {pkg}) to install ...
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0answers
14 views

Getting Razer Blackwidow macro keys on linux

I've read Getting macro keys from a Razer BlackWidow to work on Linux and the python script didn't work for me so I compiled the haskell from source. I changed my product ID in main.hs and everything ...
0
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1answer
4k views

How to autostart OpenVPN (client) on Ubuntu 12.04 CLI?

I have an *.ovpn file that works if I type in: sudo openvpn filename.ovpn. Now I would like to start up OpenVPN when I boot the computer. It's a headless version of Ubuntu 12.04 64-bit if that ...
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0answers
12 views

How to connect multiple access point to repeater mode? [closed]

*Question :- * i will connected to seven numbers of access points to one repeater mode is it possible it or not* please tell me the answer
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2answers
2k views

Can’t SSH to Ubuntu guest from Mac OS X host

Brand new Ubuntu LTS 10.04.2 install (and updated), with sshd running. I added a host-only adapter. And configured it like this: auto eth1 iface eth1 inet dhcp I can ssh from the guest to itself ...
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2answers
54 views

Cron Job not running in Ubuntu 12.04

I created a cron job in my console in Ubuntu 12.04) by using crontab -e: 10 09 * * * /home/ram-pc/Desktop/bala/personal/dump.sh But it is not running. When I save it is installed correctly without ...
2
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0answers
17 views

Issue generating redmine report in PDF

I am using Redmine for issue tracking and now I need to generate a report of all the issues and their states. The problem is that, when I press de PDF button at the bottom of the issue list, to ...
1
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1answer
50 views

Linux user in group can't cd into directory with executable permission

ok, someone suggested I try SuperUser. Here goes... I have user 'frances' that is a member of group 'pc', but cannot cd into a directory called pc, owned by pc and with executable permissions for ...
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3answers
26k views

How to remove write protection from sandisk cruzer switch pen drive?

I have a sandisk cruzer switch pendrive. It is write protected. I want remove that write protection. I did Google very much i am not getting how to remove it. I tried on mac also but it didn't worked ...
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0answers
15 views

LDAP configuration is not working for redmine

We have a set of ubuntu machines which authenticate using LDAP. I have installed redmine application in one of the ubuntu machines and configured using the redmine ldap configuration. It seems to go ...
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2answers
62 views

How do I permanently reset the UUID of an LVM partition?

A (dd cloned) backup of my boot partition left me with duplicate UUIDs. blkid shows: /dev/sda1: UUID="32579810-0388-416d-bb49-7031ac2c2975" TYPE="ext4" ... /dev/mapper/raidgroup-osbackup: ...
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0answers
7 views

Can't scroll back after cat with mosh, tmux and iterm2 setup

My setup is the following: https://filippo.io/my-remote-shell-session-setup When I do apt-get update on my server I can see all the output and am also able to scroll back as I expect. When I do cat ...
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0answers
21 views

Standalone EXE not running with Wine

So, I'm running a system with Lubuntu and a application that I developed on a windows PC needs to be able to run on Lubuntu. To clear a few things up, I'm having to run Lubuntu cause the system I'm ...
4
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1answer
2k views

Windows Broken after Deletion of HP_TOOLS partition

When I decided to install Ubuntu on my laptop as a dual-boot, I recognized that Windows 7 was using four separate partitions. I (yes, this was stupid) thought the HP_TOOLS partition was probably one I ...
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0answers
22 views

my laptop doesnt boot after shutting down and i have too press several time to turn on [closed]

I had installed ubunto alongside my windows 7 in my laptop (asus) and after the installation when I had to shut down and for booting again it doesnt work so I have to press the power button for ...
0
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0answers
19 views

Mount SharePoint Online (Office 365) in Linux

We have started using SharePoint Online included with our Office 365 subscription. Our windows users can install software that automatically syncs the Shared Documents from SharePoint to their ...
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0answers
20 views

Username/password authentication that works on Windows but not Ubuntu

At my school, we have to authenticate the the wireless network using a username and a password. Windows seem to handle much of the process automatically, so that the user only has to supply the ...
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0answers
11 views

Print from an Ubuntu virtual machine

I can print from my host Operating System, Windows 7 no problems at all. In LibreOffice I simply click print, select my HPPrinter and it instantly prints. In my Ubuntu virtual machine, if I go to ...
0
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1answer
26 views

Is there a way to stop root logins from the initial login screen without locking root account?

I'm experimenting with different settings for my machine with Ubuntu 12.04. I'm trying a login screen that requires typing in the username first, and then the password, instead of listing the users, ...
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1answer
2k views

Code::Blocks can't build / Compiler error?

My problem is that when I try to run anything on Code::Blocks it says: "It seems that your program hasn't been built yet". After I try to build it this pops up again. I have seen a similar question ...
0
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1answer
16 views

VirtualBox mouse issue

I am using virtual box on ubuntu 14.04 LTS. I have tried with it Ubuntu 4.10, 5.04 and android x86. With all of them I have the same problem: After it says "Yor guet OS support mouse indergration", ...
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0answers
13 views

I get three related errors when trying to push a commit to github concerningproc/10/exe. What should I do?

When trying to commit to github I get these errors after I type the command $ git add . $ error: readlink("proc/10/exe"): No such file or directory $ error: unable to index file proc/10/exe $ ...
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0answers
38 views

Getting WARNING: Failed to associate with BSSID using River 1.4 on Ubuntu 14.04

I'm trying to user Reaver to get the password of a WPA2 protected connection. I have Reaver 1.4 and Aircrack-ng installed on my Ubuntu 14.04. When I run $airmon-ng start wlan0 I get Found 5 ...
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0answers
33 views

Lenovo Yoga 2 Pro Dual External Monitor?

I have a Lenovo Yoga 2 Pro, which has a USB 3.0, 2.0, and a micro-HDMI port. I currently have 2 external monitors that I wish to connect. I'm using a micro-HDMI to HDMI adapter to connect one of ...
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0answers
12 views

'Use a device' missing a USB option

I have a preinstall of Win 8.1 Dell XPS 15 MY2014 I am working on going to a dual boot with Ubuntu as my second. I am trying to boot from the uSB while in EFI mode. I have hit the shift button ...
0
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1answer
16 views

Low TPS using Virtualbox + Ubuntu + Nginx + PHP-FPM + Silex

I am trying to understand why I get such a low TPS rate on my development environment. I am using the following: Mac OS X Mavericks VirtualBox Ubuntu 14.04 Nginx PHP5-FPM Silex I did not tweak ...
3
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2answers
2k views

gcc running out of memory in Ubuntu 12.10

I'm trying to compile my C project in Ubuntu (32bit) running in VirtualBox. Compiling the code in question requires quite a bit of memory, at least 3 gig. So I gave the VM 2 gig. Along with 2 gig of ...
2
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2answers
92 views

ubuntu: gmail.com does not accept mail sent from the command line

In my ubuntu trusty sending email on the command line (mutt, mail, mailx, or sendemail) works fine, except when sending the mail to any of my two @gmail.com addresses. Mail does not arrive there, ...
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0answers
13 views

How to re-enable wlan0 after backports disabled it

I have a PC with Ubuntu 14.10 and I tried to install backports following the instructions here (except for cooked monitor interface, compiling my own, and I couldn't check if I had ath10k firmware, I ...
0
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1answer
4k views

vsftpd: 500 OOPS: could not bind listening IPv4 socket

I will use vsftpd as a ftp server. I did all changes on /etc/vsftpd.conf. These changes are (according to digitalocean): anonymous_enable=NO write_enable=YES local_enable=YES chroot_local_user=YES ...
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0answers
64 views

Headphones not working on Ubuntu 14.04

My headphones are not working on my Ubuntu 14.04 partition, but they work on my Windows 7 ones. What happens is once I plug my headphones in, they are detected by the OS, but I can’t hear a thing. ...
0
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1answer
32 views

How to get this interface in Ubuntu 14.04?

I've wondered this for a while now. Whenever I see any official Ubuntu images, I always see at least one with the following tablet interfaces: I just installed Ubuntu 14.04 the other day, and I'm ...
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0answers
28 views

Ubuntu disables ssh login permanently after changing sshd_config

So I have been trying to follow this guide and so far I have wasted ~5 hours launching Ubuntu 14.04 instances to try different setup every time, the issue is basically quite common but non of the ...
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2answers
5k views

XDG_RUNTIME_DIR not set in the environment

I open a terminal and use sudo -s -u mysql. Now when i try to open a file, whose owner is mysql using gedit xyz.err, I get the error : No protocol specified ** (gedit:23076): WARNING **: Could not ...
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0answers
24 views

Mounting EBS volume on Ubuntu 12.04 taking long time

I have written one shell script which Checks if volume has file system on it or not Formats the volume with ext4 if no file system present Creates mount point directory Tries to mount volume using ...
0
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1answer
4k views

Recover data from corrupted LVM partition with TestDisk?

I had setup 3 disks in a LVM array with each disk holding some data. A few weeks back one of the disks "disappeared" from the LVM array and BIOS. After rebooting, the disk reappeared but does not ...
0
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1answer
55 views

Ubuntu 14.04 LTS drops some DNS replies with “DNS Destination unreachable / Port unreachable” message

I noticed something really really strange I can't figure out, while wiresharking both my 2 Ubuntus 14.04 LTS : somehow randomly, Ubuntu seems to drop some incomming DNS replies. This happens both for ...
3
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1answer
1k views

Postfix: SMTP, use port 587 rather than 465

I have set up a mail server on AWS EC2 using the instructions from Flurdy: http://flurdy.com/docs/postfix/ it has mostly gone well. My issue is that I would prefer to use SMTP port 587 with TLS ...