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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Compiling PHP with apache mod_php on Linux

I need to compile PHP with apache module on Kubuntu. I have installed both apache2 and apache2-dev. But I am unable to locate apxs2 nor apxs. $ uname -a Linux hppavilion 4.4.0-21-generic #37-Ubuntu ...
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34 views

Authentication vsftpd account using remote LDAP user

I'm trying to authenticate vsftpd from LDAP logins which hosted remotely another server . vsftpd hosted on Ubuntu 14.04.2 LTS (GNU/Linux 3.13.0-48-generic x86_64) amazon aws . from the LDAP server ...
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2answers
34 views

lost folder from /mnt and recovering

I'm running Ubuntu 14.04.2 LTS (GNU/Linux 3.13.0-48-generic x86_64) on Amazon AWS. I had a folder "foo" in the /mnt and after few modification I had to recover to previous backup of the instance . ...
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36 views

How to import a large and complex csproj into MonoDevelop 5.10 with Ubuntu 16.04 and the ASP.NET addin?

I would like to know how to import a large and complex csproj into MonoDevelop 5.10 with Ubuntu 16.04 and the ASP.NET addin I tried this method recently , http://stackoverflow.com/questions/9220290/...
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36 views

Services (web, remote login, console, but not ping) unavailable as Apache hogs system resources

I just did an upgrade to my Ubuntu box. It upgraded, but now the machine, within hours (maybe less) of booting, is unreachable by ssh, by web browser, and even the console is blank... but I know it's ...
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1answer
59 views

How to connect to device via SSH over direct ethernet connection

I have a device that I need to connect to over SSH. The device is connected to my workstation via a direct ethernet connection. I'm attempting to assign the connected device an IP address somehow that ...
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0answers
31 views

How to Manage TeXLive 2016, Lyx and KDE Tikz in Linux?

I installed manually TeXLive 2016 by the script install-tl so it is not anymore controlled by apt-get. However, I need too Lyx and KDE Tikz, which should work well with TeXLive. I am thinking how to ...
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2answers
48 views

Remove injected code from all php files in directory on Ubuntu [duplicate]

I have a site where some code was injected into a very large number of php files and removing them manually is not feasible due to the number of files. I can search for a variable name from the ...
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1answer
32 views

fdisk Not Returning Space?

I'm trying to resize my ext4 partition by giving it about half of my swap space. The swap partition (/dev/sda6) currently comes right after my ext4 partition (/dev/sda5). In fdisk, I remove my ext4 ...
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2answers
32 views

Ubuntu 15.10 Networking Problems

I recently deployed a VM with Ubuntu 15.10 and I am having trouble configuring the network properly. Note: When the OS was installed, it picked up an IP (from DHCP I guess), because it didn't ask me ...
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1answer
37 views

Warning because addgroup tries to create an already existing user group

I am trying to run the command dpkg --configure -a in order to fix dpkg so I can apt-get programs. I get the error addgroup: The group 'systemd-journal' already exists as a system group. Exiting. ...
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1answer
50 views

How to display all the environment variables stored in my unix?

Is there any command to display all the Environment variables stored in my unix?
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23 views

nvidia-prime doesn't disable nvidia video card

Elementary OS Freya (ubuntu 14.04 x64), nvidia-355 proprietary driver from ppa:graphics-drivers/ppa. cat /proc/acpi/bbswitch returns 0000:01:00.0 OFF When in nvidia-settings Intel enabled. But ...
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1answer
15 views

How to Configure CGI in Ubuntu?

I am very new to Apache in Ubuntu. I recently installed Apache2 on Ubuntu and I am trying to configure CGI. I added the following lines in apache2.conf file: ScriptAlias /cgi-bin/ /home/router/cgi-...
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26 views

Help needed with Raid 5 that was working OK

My parents had a Netgear RN 104 that stopped working properly, they messed with some settings, messed it up and gave it to me to fix. It has 4 x 4tb drives in Raid 5. I've used mdadm before to ...
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1answer
35 views

wireless network working erratically on debian

I can't figure out how to make WIFI work correctly on debian. First of all, when I just installed Debian I had WICD as the network program. This program doesn't work correctly. Specifically it can't ...
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0answers
85 views

How to Complete this Texlive 2016 installation in Linux?

Condition: incomplete TexLive 2016 installation Differential conditions: Ubuntu-related system bug Settings in $HOME/.bashrc PATH="/usr/local/texlive/2016/bin/x86_64-linux:$PATH" Before starting ...
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50 views

How Troubleshoot Failed Installation of pywfdb from pip?

Condition: unable to troubleshoot failed installation of the library/module pywfdb from pip Differential conditions: failed dependenciens of pywfdb Exclude: upstart/systemd design bugs with runit in ...
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8 views

Lost Mouse and Pointer as well Screen settings

I do run Ubuntu 14.4 on an Server with a Desktop on it for the user, that works as well on the server. Since there was a faulty drive in the Raid, I had to reset all for the efiboot and grub, as the ...
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30 views

How do I fix my CIFS mouning options correctly to not break the mount?

I'm in the process of setting up a new NAS in my home setup. Part of this is mounting it on my Ubuntu server running 14.04. My problem arises when I want to mount a subfolder of a share so that only ...
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0answers
18 views

Failed Ubuntu dual-boot installation - GRUB errors 'failure reading sector'

I've been unsuccessfully trying to install Kubuntu 16.04 on my new laptop alongside W10, which it came in with. Now I did this twice already on different computers and was always successful and there ...
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1answer
29 views

lsyncd Error: There can only be one config file in command line. Ubuntu

I am pretty new to Linux bash. I am trying to mirror two folders using lsyncd command. Here are the steps I followed. Install the lsyncd package Run the following code: sudo lsyncd /home/...
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20 views

Log notifications sent by process and its descendant

I have a process which creates a lot of processes, I know that processes can send notifications using /run/systemd/notify (systemd-notify). Is there any way that I can launch processes and log all the ...
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0answers
37 views

Can't determine cause of a crash

I have a PC that is freezing periodically. Sometimes it will crash 2-3 times within a couple of hours, while other times it will go a few days. When the PC crashes, the screen, mouse, and keyboard ...
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0answers
25 views

howto login into system with LDAP creds when server with LDAP is offline

I have Ubuntu 14.04 and LDAP as center of authentication. It works fine until LDAP server is online. Sometimes network is going to down between LDAP and other servers and LDAP is unavailable, so ...
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21 views

How to crop a part of my screen in ubuntu

I want to crop only a part of screen in my ubuntu. For example, a part of browser which is showing errors, or only the console part of IDE showing stack trace. Is there any inbuilt option or should I ...
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1answer
21 views

How should I debug a hard-lockup of my Ubuntu laptop

I've been running Ubuntu on a Thinkpad T450s for some time now. Every so often, the system will hard-lock on me. E.g. the mouse won't move, ctrl-alt-f# won't take me to a plain terminal, etc. I ...
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1answer
35 views

Using crc32 to find if files were harmed or damaged

I have a directory with a content. To ensure nothing will get lost with copying I compressed the directory and now I have a dir.tar.gz file. The copying still troubles me and the files are damaged so ...
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26 views

Ubuntu freezes with second PCI GPU and cannot use it

Configuration is: Asus M5A99X EVO (IOMMU enabled, firmware flashed) AMD 64-bit processor PCI-E x16 #1, NVIDIA GTX 580 PCI-E x16 #2, NVIDIA GT 610 Ubuntu 16.10, amd64, LVM locked SSD The problem is ...
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1answer
45 views

Rotate IP outbound IP address in Ubuntu or CentOS

My OpenVZ VPS has two IPv4 and two IPv6 addresses: 23.54.xx.102 23.54.xx.103 2604:xxxx:1::xxxx:6x0b 2604:xxxx:1::xxxx:5x7c Now I want to rotate my outbound IP so that when I run any PHP, ruby or ...
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0answers
19 views

Network teaming or bonding in Ubuntu 12.04

I have two NIC cards and two ISP providers. If one network is down, how can I automatically switch to other network which is up. I am using Ubuntu 12.04, is it possible?
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1answer
55 views

Ubuntu server 14.04 possibly going to sleep? [closed]

I have a web server(apache) running on Ubuntu 14.04. It has been running fine for years. It is a VM on a vmware host. About a month ago we restored it to a new vmware host from a backup because the ...
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28 views

Ubuntu 14.04 server can't access local or external network from server

I have Ubuntu 14.04 development server that was upgraded from 12.04 a few months ago. It initially worked fine, but suddenly lost network capability. After some messing around and removing DHCP (set ...
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24 views

Nautilus/gfvs: Cannot mount cifs shares using only krb5 ticket

we are planning to upgrade our Ubuntu 12.04 clients to Ubuntu 16.04. With Ubuntu 12.04 we are able to mount a cifs share using a krb5 ticket, without providing any username or password. Whenever I ...
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54 views

Ubuntu 16.04 some app windows do not show

I have just installed Ubuntu 16.04 in a PC board. The fact is that after upgrading to kernel 4.4.0-28-generic I cannot see the windows of some applications I need to use, just as Synaptic and Eclipse. ...
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1answer
45 views

Why ping not works through Interface name but works through Interface address?

I use a USB-Ethernet Adapter which gets recognized as eth1 in the target. I then set an IP for eth1 using the command ifconfig eth1 YY.YY.YY.YY When I use ping -I eth1 XX.XX.XX.XX it's not ...
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17 views

open broadcaster software (obs-studio) preview is flickering so is stream and recording

I made some test streams with open broadcaster software. Unfortunately the preview is flickering and so are the streams. You can find some example content showing the flickering here. There are some ...
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1answer
39 views

Why do these commands produce different outputs?

I am trying to get the linux timestamp from a row of text. I can use the cut command to grab the string > echo '"tester_row_____",0,"2016-07-04T01:42:28Z","2016-07-04T02:00:58Z"' | cut -c 22-41 ...
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1answer
42 views

Will a custom encoding C# class function properly with the Mono .NET 4.0 libraries installed on Ubuntu 16.04?

I would like to change the default encoder for ASP.NET 4 running with Ubuntu Linux 16.04 operating system on a Lenovo Thinkstation desktop and apache server 2.0 and mod-mono-server4.exe. My question ...
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1answer
45 views

sudo rsync -a does not preserve mtime

In order to debug my repeatedly crashing Ubuntu 16.04 I want to backup /var/log from my HDD to an external USB medium. I am running an live OS (Ubuntu 16.04) and using the --archive option: $ sudo ...
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1answer
102 views

Installing docker hangs at “setting up docker-engine” on ubuntu xenial

I'm trying to install docker on ubuntu xenial and am following this tutorial: https://docs.docker.com/engine/installation/linux/ubuntulinux/. So far it's gone without a hitch except for there ...
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14 views

convert openwrt rules to ubuntu 14

I have the following rule for openwrt firewall & network. Can anyone convert this to ubuntu 14? from /etc/config/firewall (openwrt) to ubuntu 14 command line: config ipset ...
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1answer
31 views

How to use MonoDevelop pc files with UNIX convention relative pathnames?

On my Ubuntu Linux 16.04 Lenovo desktop , I am using MonoDevelop 5.10 with the Xamarin ASP.NET plugin for development and production environments. I am using *.pc files with Unix convention full ...
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249 views

How to set HDMI sound output as default on Ubuntu 16.04

I am using an old laptop as a dvd player, so I want the sound to always play via HDMI, but whenever I suspend the sound switches back to the internal speakers. I can change the sound back to HDMI with ...
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1answer
37 views

Incorrect $HOME env variable for a newly created user

On my Ubuntu machine, I logged in as "olduser" and created "newuser" using the following command: adduser --system --home /usr/share/newuser --no-create-home --ingroup newgroup --disabled-password --...
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91 views

How do I install Bazel on Ubuntu 16?

I'm unable to download the certificate to add bazel repo to my ubuntu 16 machine: url https://storage.googleapis.com/bazel-apt/doc/apt-key.pub.gpg | sudo apt-key add - % Total % Received % Xferd ...
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1answer
35 views

ubuntu not starting after update-grub

I changed the default kernel in /etc/default/grub and did update-grub. Now every time the system is switched on, it opens BIOS settings. It's not showing any boot menu.
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2answers
84 views

Can not ping other nodes in private network

I am setting up a small cluster (four nodes running ubuntu14) and I have this configuration: # Internet and lab - 192.168.10.0/24 iface eth0 inet dhcp dns-nameservers 192.168.100.1 # privte network ...
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0answers
16 views

Make a bootable ubuntu-core for Raspberry pi2

I've been trying to build a minimal Ubuntu system for my raspberry pi2, based on an Ubuntu 14.0.4 core (base) image. here: wiki.ubuntu.com/Core I deployed the image to the SD card, Cross compiled a ...
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2answers
53 views

All services of a user are killed when running multiple services under this user with systemd

We're using Ubuntu 16.04 LTS and want to use multiple Tomcat installations which should start at boot time. One of these Tomcats would host a Jenkins which will deploy a webapp onto the other tomcat ...