Ubuntu is a Linux distribution with an emphasis on ease of use and installation. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

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3
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1answer
50 views

PAM failing to authenticate sudo, after successfully contacting ssh-agent

Setting up PAM sudo authentication, using ssh-agent, on 14.04.1-Ubuntu server LTS. I'm still unable to successfully authenticate sudo, via the ssh-agent, using PAM. Here are my relevant /var/log/...
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votes
0answers
31 views

Wifi authentification window is wrong

I installed Ubuntu on my new MacBook Air. My wifi card detects all the wifi network. However when I try to connect to a specific one, it prompts me with an unexpected window. with this network, I ...
0
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0answers
39 views

Apache 2.0 Automatic hosting and virtual hosts on Ubuntu 16.04 Alpha distribution

I just finished reading the following articles: [http://www.mono-project.com/docs/web/mod_mono-autoconfiguration/] [apache virtualhost using mono-apache-server2 not mono-apache-server4 The www.mono-...
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votes
0answers
27 views

Ubuntu not booting

I have ubuntu 14.04 with Windows 10. It gives the purple ubuntu screen on start up. If I go to the recovery mode and then resume from there, I go on to the login page where it gets into a login loop. ...
2
votes
1answer
39 views

New Linux User, Where do I begin and how do I master the OS [closed]

I am fairly new to the Linux OS. I'm being asked to learn the OS (Ubuntu & Fedora) for computational science purposes. The problem isn't getting involved or into the OS, but I don't exactly know ...
0
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0answers
9 views

Setup RHEL 7 to PXE boot Ubuntu netboot

I'm looking to learn how to setup a RHEL 7 VM instance to PXE boot Ubuntu (and possibly other distros). The VM will be created by the network team at work. They don't have time or knowledge to setup a ...
0
votes
2answers
25 views

Client route for OpenVPN Access Server

I am running OpenVPN Access Server and I'd like to push a route to every client on connection that is the equivalent of: sudo ip route add 172.17.0.0/24 via 172.27.232.1 Where should I go to set ...
1
vote
1answer
35 views

Finding edited system files

I am installing a new OS (old = Ubuntu 12.04; new = Ubuntu 16.06). I want to be able to back-up any system files I have edited on the old system but don't know all the ones I have updated. How would I ...
1
vote
1answer
25 views

Use SWAP as disk cache in Linux

I am using different kind of disks on my server. Is it possible to use faster disk as SWAP and ask Linux to use it as Disk cache As I understand Linux use SWAP only for application data not disk ...
-1
votes
0answers
17 views

Laptop keyboard not found unless if tap on boot

Strange behaviour on Lenovo Yoga x240 laptop. I must repeatedly press anykey on keyboard immidiately (actually .7s) after select item in boot menu. Otherwise neither keyboard nor trackpoint will not ...
1
vote
0answers
30 views

Calculating the total traffic generated by an application in a network

I have network (shown above) with the same application (Appx) running on the nodes (Linux nodes). This Appx has data to send the same copy of the Appx running in each node (i.e. each Appx generates ...
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0answers
22 views

Execute custom script when wireless NIC connects to SSID

I have pieced together two scripts that will serve to execute a custom script when my wireless NIC connects to an SSID. Firstly, I will add the following (notice the post-up section): auto eth0 ...
0
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0answers
26 views

How to change dropdown color in Firefox on Ubuntu?

I've updated Firefox recently, and the background color of the suggestions dropdown menu has changed from white to dark-gray (desktop theme default). How do I change it back to white? I've created a ...
1
vote
1answer
62 views
+50

Strange things happen when I close my laptop lid

I recently bought a new HP Spectre x360 laptop and installed Linux (Ubuntu 16.04 LTS 64 bit) for the first time. I have noticed a few small bugs but something very strange happens when I shut the ...
7
votes
3answers
294 views

How to harden su with dpkg-statoverride?

I am reading an Ubuntu 14 hardening guide and this is one of the suggestions: It generally seems like a sensible idea to make sure that only users in the sudo group are able to run the su ...
-2
votes
2answers
40 views

How to restart network in ubuntu server 14.04.04?

I tried using service network restart and /etc/init.d/networking restart, what command could I use now?
3
votes
0answers
66 views

unable to install anything using apt-get because of insserv

Whenever I try to install something using apt-get I get the error messages involving insserv. I have tried install many different packages but everything give same error. And apparently, CUPS package ...
2
votes
0answers
17 views

VPN with iptables and routing: access port from local network

I use a commercial VPN provider with OpenVPN as client on Ubuntu Server 14.04 LTS (but doing some testing on 16.04 LTS too). I have configured iptables and routing tables to mark packets based on user ...
3
votes
2answers
97 views

Installing Skype in Ubuntu

I'm new to Linux. I have Ubuntu 16.04 LTS installed. I'm trying to install Skype. I downloaded the package: skype-ubuntu-precise_4.3.0.37-1_i386 When I open the package, I'm taken to a window that ...
0
votes
0answers
44 views

Serve ASP.NET Webforms content on Ubuntu 16.04 from 2 different root directories using one XSP4 child process?

We would like to serve ASP.NET Webforms content on Ubuntu 16.04 from 2 different root directories using one XSP4 child process. In /etc/mono-server4, I created debian.webapp specifying root ...
1
vote
1answer
18 views

rtcwake not working on Ubuntu 14.04 installed on MacBook Air (mid 2012)

I have installed Ubuntu 14.04 GNU/Linux on a MacBook Air (mid 2012). I'm trying to use rtcwake to implement a "delayed hibernation from suspend", as in https://askubuntu.com/a/33192 (the particular ...
1
vote
1answer
30 views

Run a script after login that prints to the terminal a welcome message?

I want a script that writes to the terminal a welcome message (something like echo "welcome, usr. Linux version..." etc). I have the script written, it works (i.e. it has execute privileges) so I know ...
0
votes
0answers
54 views

How do I set up network connection via 3G USB modem for Linux?

I've spent a lot of time searching for a solution, but now I'm here. I need to set up LG 3G USB modem for my Ubuntu 16.04. The system is able to see the device: $ lsusb Bus 001 Device 004: ID 1004:...
3
votes
0answers
63 views

How do I define an Ubuntu Linux16.04 systemd service for fastcgi-mono-server4 or xsp4?

How do I define an Ubuntu Linux16.04 systemd service for fastcgi-mono-server4 or xsp4? I have already defined an Ubuntu Linux16.04 systemd service for apache2 by copying obex.service to apache2....
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vote
0answers
27 views

How to install mailman when it needs an older version of Python?

I am working on an install of mailman 3.0.3 on Ubuntu Server 16.04 which ships with Python 3.5.1 and 2.7.11. Per Barry Warsaw that version of mailman requires Python 3.4.n. https://gitlab.com/mailman/...
0
votes
0answers
40 views

fortran program crashes instantly with segmentation fault

I have a fortran program which I compiled myself and I ran the executable hundreds of times (without recompiling or anything), but now when I run it, it crashes instantly with segmentation fault. ...
0
votes
1answer
37 views

Custom greeting when I log in via ssh

I need to create a custom greeting message on my server when I log in via ssh. Or at least I want to add some information to it. I have none of these files: /etc/ssh/sshd_config, /etc/motd. So how can ...
0
votes
0answers
20 views

Relationship is between Apache2 and xsp2 (or mono-xsp2) for an Ubuntu Linux 16.04 system which serves mono ASP-NET content to an web browser user

I am interested in knowing what is the relationship is between Apache2 and xsp2 (or mono-xsp2) for an Ubuntu Linux 16.04 system which serves mono ASP-NET content to an web browser user requesting an ...
0
votes
1answer
50 views

How to lump together Apache2 Server and xsp2 server in the configuration for auto start when the PC reboots?

We need to lump together Apache2 Server and xsp2 server(or mod-mono-server server) in the configuration for the auto start sample shown below when the PC reboots. Quoting from the article, http://...
0
votes
2answers
33 views

Grub menu on reboot after removing another distro partition

I just acquired a macbook air. I dual-booted mac os with Ubuntu. It is my first time multiple-booting on a mac. I triple-booted with another Ubuntu. Ater removing the third distro, I experience some ...
0
votes
1answer
23 views

Couldn't connect to Larvel homestead database with MYSQL workbench

I am unable to connect to laravel homestead via mysql workbench here is how i connected but i am facing the below issue Plz Plz help me !!! Edit: Here are the details as requested by Gerath ...
0
votes
1answer
29 views

Is the openjdk-r ppa trustworthy enough to install on server?

We are running ubuntu 14.04, which still does not have openjdk8 yet. And I doubt they are going to fix this very soon. We need jdk8 very badly. Is this openjdk-r ppa safe enough?
2
votes
1answer
70 views

Bridged networking problem with Xen 4.6 and Ubuntu 16.04

I'm trying to setup a Xen virtualization on Ubuntu 16.04, and Xen 4.6. My plan is to have 1 private network, as well as virtual servers with public IP addresses which should be accessible externally (...
0
votes
1answer
62 views

Why I cannot purge mono-devel on Ubuntu Linux 16.04?

After I sudo apt-get install mono-devel , when I try to purge mono-devel on Ubuntu Linux 16.04, I get the following error message: Reading package lists... Done Building dependency tree ...
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0answers
13 views

Ubuntu Gnome stuck in startup(gnome logo) sometimes

I pick a(successful startup) and b(fail to start) dmesg file, hope someone can help me differ the file and find out why sometimes my ubuntu system fail to start(it frozen before login interface ...
0
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0answers
14 views

Multiple Subinterfaces on a Wireless NIC (Ubuntu)

I need to create multiple subinterfaces on a wireless NIC. I have done it on a regular wired NIC before but before I test myself, I wanted to find out from the community if it is possible. The ...
0
votes
1answer
22 views

Continue monitor web server and download newly added files

What are the best way to continuously monitor a web server (HTTP) and download newly added file with min. delay (ideally < 1min. delay)?
0
votes
1answer
29 views

pppd: using the noauth option requires root privilege

I have a user username who is member of group dip. I'm trying to run /usr/sbin/pppd, which is mode -rwsr-xr--, owner root, group dip, as user username. However, I get the error message: /usr/sbin/pppd:...
1
vote
0answers
22 views

Linux Mint 17: Menu editors can't “move” Main Menu applications

Linux Mint 17.2 Rafaela 64-bit MATE 1.10.2 mintmenu 5.6.4 Menu editors cannot apply "move" to Mint Menu applications. Mozo menu editor (default menu editor, version 1.10.1-1+rafaela) Displays ...
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vote
0answers
27 views

Find recursively files that have a percentage of lines in common

Is possible to do this? I want an output where i have only files that are 50% the same of others or have 20+ lines in commons. I'm trying to isolate commons functions in *.java files. Thank you!
0
votes
1answer
85 views

How to Get Sufficient Flash Player in Chromium?

Test video https://twitter.com/NHL/status/740577888735526912. In Chromium Unsuccessfuly attempts I followed the guide here > https://get.adobe.com/flashplayer/ > 64 bit apt Ubuntu 10+. After ...
0
votes
0answers
15 views

rsyslog: how to log to one of multiple log servers

I have a server that generates a lot of log content (single log file), and want to send it out to say 4 backends. I do not want all entries to be duplicated to every backend, but, say, rotate among ...
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votes
0answers
113 views

How to Have Rapid Thumbnail View for Presentations?

I would like get faster review of presentation thumbnails in Linux, which has been tried to be solved since 2012 unsuccessfully in many forums, here AskUbuntu thread, here LibreOffice thread and here ...
1
vote
2answers
60 views

How to Make MoveToTrash mean Delete Permanently by One-liner?

I did Move to Trash > Empty Trash. However, .fileNames and .directoryNames stay in the filesystem those .files/.directories which have exactly the same name as my deleted files/directories For ...
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0answers
44 views

Forcing zpool to use /dev/disk/by-id in Ubuntu Xenial

I'm giving the bundled OpenZFS on Ubuntu 16.04 Xenial a try. When creating pools, I always reference drives by their serials in /dev/disk/by-id/ (or /dev/disk/gpt on FreeBSD) for resiliency. Drives ...
1
vote
1answer
42 views

iptables configuration

I'm trying to setup iptables, the forward rules are workin fine, but the output rules are making problems. I Can't access internet from the hosts beheind the firewall neither the firewall server can ...
0
votes
0answers
40 views

Why does my cursor keep disappearing/flickering?

I'm fairly new to Linux, and am starting out with Ubuntu in an effort to become more comfortable with the operating system. However, I'm currently using a dual-screen setup, with one screen being a ...
0
votes
1answer
18 views

Installing large package throwing “no space” error

Im trying to install unity3D on my persitsent Ubuntu linuy, the stick is 10+ gb and the persistent part about 4GB. But whenever i run dpkg -i unity-editor-5.3.5f1+20160525_amd64.deb it takes a while ...