Tagged Questions

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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1answer
26 views

line 4: 5 + : syntax error: operand expected (error token is “+ ”)

noticing the error mentioned in the subject line when trying to execute the below listed bash script on Ubuntu (53-Ubuntu x86_64 x86_64 x86_64 GNU/Linux) #!/bin/bash read x y echo $(($x + $y)) ...
0
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0answers
16 views

Ubuntu init script failed - trying to find out more detail about the error

my /var/log/boot.log shows this under Ubuntu 14.04: ... * Starting servicename chown: invalid user: ‘username’ No passwd entry for user 'username' * Starting ... ... The init ...
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0answers
7 views

Failed to get good battery widget for awesome wm [on hold]

How to get the notification for battery and battery widgets for Awesome WM for ubuntu ?
0
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0answers
7 views

Network connectivity trouble to non-routing multi-homed hosts?

I have two networks: A and B (172.16.2.0/24 and 172.17.2.0/24). A is Ethernet, B is WiFi. An OpenWRT router connects A and B, and most traffic gets passed OK. Default route on router leads to a ...
0
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0answers
10 views

Ubuntu does not add dependencies from local APT server

I've been playing with Zentyal's source, trying to make armhf support happen. Finally compiled the packages, added dependencies compiled from source, etcetera. The repo is live, packages are visible, ...
1
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0answers
18 views

Nginx leaves old socket

I'm running Nginx 1.6.2 (the nginx-full package from the nginx/stable PPA). I'm using the unmodified configuration /etc/nginx/nginx.conf: user www-data; worker_processes 4; pid /run/nginx.pid; ...
2
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0answers
13 views

Virtual packages with reprepro?

I have been working on making Zentyal packages possible on the armhf architecture, and finally succeeded in a working build of 4.0 packages. However the installation is quirky as these packages have ...
1
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0answers
18 views

Jenkins does not use systems locales

I got a interesting behavior in Jenkins. Jenkins' shell does not use my systems locales. Jenkins runs as user jenkins on my system. Logged in as jenkins via SSH: locale displayed: ...
0
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0answers
24 views

Striped lines in Ubuntu 14.04

I have just installed Ubuntu 14.04 64bit yesterday in my PC. But today, desktop turned into striped lines many times and I had nothing to do except pressing the power button on CPU. Don't know why ...
2
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2answers
23 views

How do I create a utility USB?

I do a lot of work with many different bootable images all on different flash drives. However, it gets annoying to search for a specific drive, plug it in, and use it. Is there a way I can consolidate ...
2
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0answers
19 views

Computer won't restart without recovery mode and mouse is flickering after I added the ppa ubuntu-x-swat/x-updates

I installed Steam a few weeks ago, and it kept bothering me to add the ppa ubuntu-x-swat/x-updates,so I did it yesterday. After I installed it, my computer was fine until I rebooted. The computer ...
0
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0answers
38 views

Ubuntu 14.10 disconnects from wifi after waking up from suspension

I have recently upgraded to Ubuntu 14.10 LTS. When I suspend my laptop and wake it up later from sleep, or when I close my laptop lid and open it later on, or when I want to change my network, I loose ...
0
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1answer
36 views

Ubuntu on macbook won't boot from USB

I cannot boot Ubuntu from my macbook. I have tried the official Ubuntu walkthrough for creating a USB boot stick (located here: http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-mac-osx ) ...
2
votes
1answer
34 views

Why does my Cylon Linux Live/Install disc say that it's Lubuntu at install?

I have a "Cylon Linux" live/install DVD that I have used to install Cylon on my desktop. Works fine, install was trouble free. Now I am using the SAME install DVD to install this distro on my laptop ...
0
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0answers
18 views

How many hard disks and storage size is supported by Ubuntu? [on hold]

We are using AWS ec2 instances and we want to attach EBS volumes to EC2 instances using a program. In order to over burden one particular EC2 instance by attaching more storage than it can handle, I ...
1
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1answer
40 views

I am try to interactively add a user via “useradd”

I am basically trying to write a simple script to allow for interactive use of "useradd" with select options. The options I am trying to allow for specific use are to either be defined interactively ...
1
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0answers
18 views

Using RAW video encoding with gstreamer & VLC

I'm streaming RAW video with gstreamer like so: gst-launch-1.0 -v videotestsrc ! rtpvrawpay ! udpsink host="127.0.0.1" port="5000" This outputs the following caps: caps = application/x-rtp, ...
0
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1answer
38 views

Can't get grub to boot windows 7 partition. “error: invalid EFI file path”

I have an "HP pavilion 7008tx dv7" laptop. It came bundled with Windows 7 and has two 1TB HHD and an 32G SSD. Here is the output form "sudo parted -l": Model: ATA TOSHIBA MQ01ABD1 (scsi) Disk ...
0
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0answers
20 views

Opening Nautilus without --no-desktop, on Xmonad on top of Ubuntu, what happens?

I have a standard Ubuntu install with an Xmonad install on top of it [1]. Now, when I run nautilus from the command line a view unexpected things happen. While Nautilus does appear, there is now also ...
1
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0answers
27 views

chromium-browser processes' cmdline not available in full form

I am running Ubuntu 14.04, with 3.13.0-38-generic kernel on a MacBookPro11,2. (late 2013) I'm trying to get the process ids of all chromium-browser processes, a bit selectively such as only renderers ...
0
votes
1answer
47 views

grep: input file 'X' is also the output

I use ubuntu 14.4, and attempt to redirect the output of grep command to a file, but I keep getting this error: grep: input file 'X' is also the output I've searched for this issue and just found ...
0
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2answers
36 views

Start/stop service script like Ubuntu for RedHat

Is there a .sh script that manages starting and stopping the service like Debian/Ubuntu but for Red Hat/Fedora? Looking to place it into the file running some software.
0
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0answers
47 views

How to troubleshoot and fix Wifi driver on Wandboard DUAL?

Environment Wandboard DUAL C1 Ubuntu Trusty using these instruction Issue I was able to install Ubuntu Trusty and I am failing to get the Wifi driver to work. root@ubuntu-armhf:~# uname -a Linux ...
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0answers
22 views

auto completion and text expansion

I needed a tool which expands abbreviations and suggest next word as I type. I use autohotkey on windows. I need similar software on Linux Ubuntu. I tried auto key. Please suggest.
0
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1answer
30 views

Software packaging for RedHat similar to Ubuntu

I'm currently helping a professor who is having trouble installing a particular software onto the school's server which runs on Red Hat/Fedora. The professor thinks that the software was packaged for ...
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0answers
30 views

Does root have access to user data? [duplicate]

In case of a Ubuntu distribution (14.4): Does root have access to data of all users?
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0answers
47 views

Post installation error: no such device . grub rescue

I installed ubuntu 14.04 as the only operating system on a computer with 1 hard disk and chose the following partitioning: sda1 (fat32) for EFI sda2 (ext4) for /home sda3 swap sda4 (ext4) for ...
1
vote
1answer
16 views

Why are --older-than and --younger-than killall options missing in RHEL/CentOS?

I've experienced this issue in cleaning up scripts written by developer who were writing for Ubuntu systems, as well as ServerFault questions like this. Is there any reason the -o, -y (--older-than ...
1
vote
1answer
22 views

Setting Solarized colors on a Vagrant Ubuntu Box

I am trying to set the colors of my Ubuntu Box to match the 16 colors palette of the Solarized color theme. I have installed Ubuntu 14.04 Server, no GUI option enabled. When I ssh into this VM and I ...
3
votes
1answer
38 views

Why isn't Firefox 33 use GCM on our webserver?

We have a webserver (Ubuntu 12.04) with apache2 2.2.22-1ubuntu1.7. From client side with openssl: $ echo QUIT | openssl s_client -connect OURSERVER:8080 2>/dev/null | egrep "Cipher is|Protocol" ...
2
votes
1answer
18 views

Cannot change vncserver default geometry

I'm using Ubuntu 12.04 (I think it's desktop...) and running vncserver to connect to it remotely. I can successfully set the resolution if I use the -geometry flag when starting the server, but I ...
0
votes
1answer
57 views

Start application as root at boot time on Ubuntu 14.04

I'm working in Ubuntu 14.04 I have an C++ application which I have compiled. I get the executable which name is "program". Well the thing is that this program use opencv and sockets then if I try to ...
0
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0answers
61 views

Ubuntu apt-get errors: “has no installation candidate” or “Unable to correct problems, you have held broken packages” [closed]

I've got 2 ubuntu VM's running on windows 8.1, one ubuntu 12.04 Server and one ubuntu 12.10 Desktop. I get errors with both when trying to install openssh-server (and other software): Server: sudo ...
0
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0answers
10 views

Receive multicast on any source [on hold]

I'm using Ubuntu 12.04.5 LTS for IPTv multicasting. If i use same Source-IPv4 address then I can receive stream over multicast from the sender. If I've different Source-IPv4 addresses on sender and ...
0
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0answers
14 views

Any one help me to configure LDAP in centos [closed]

I need to configure open ldap server in centOS and client in ubuntu. can any one help me
0
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0answers
10 views

Why can't I start a VNC session using the randr flag?

I'm using Ubuntu 12.04 (I think it's desktop...) and can successfully run vncserver (which ultimately links to /usr/bin/vnc4server) and connect with my client, and I can also add the -geometry flag ...
0
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0answers
20 views

wireless adapter doesn't show up in iwconfig after unload and reload its module

I unload and load the module which I suppose to be the one for my internal wireless adapter, $ sudo rmmod iwlwifi $ sudo modprobe iwlwifi My internal wireless adapter isn't show up in iwconfig, ...
0
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0answers
53 views

Why does my wlan0 stop working?

A few minutes ago, my internal wireless card wlan0 on Thinkpad T400 starts not working. This always happen after a while (between half an hour and several hours) from starting Ubuntu 12.04, especially ...
0
votes
1answer
16 views

Real time show the max temperature outputed by sensors?

Is it possible to extract the maximum temperature from the output of sensor, and real time update it, and show it somewhere on desktop of Ubuntu 12.04? I know psensor is to do that, but its version ...
3
votes
1answer
90 views

Why “backporting process does not consider upstream releases”?

From http://opensourcehacker.com/2013/03/20/how-to-backport-packages-on-ubuntu-linux/ backportpackage will download the latest version of the package from Ubuntu archives. The latest ...
0
votes
2answers
59 views

Why does this Shell script fail as cron job [closed]

I have the following in a shell script, when I run this script it works but when I put this as a cron job it does not work(nothing happens!). How come? script #!/bin/bash ...
-2
votes
1answer
30 views

When will we use apt-get to download source? [closed]

In what situation, will we like to use apt-get to download source? Can's we install from binary installation by apt-get too? If we are to install from source, can't we download source from its ...
0
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0answers
24 views

Possible not restore cpu frequency after suspending and waking up?

When I suspend my Ubuntu 12.04 and wake it up, the cpu frequency I set by clicking indicator-cpufreq on the desktop panel will be restored. I wonder if that is a bug or some design? Is there a way to ...
1
vote
2answers
43 views

Increasing performance of clear text file reads

In our bioinformatics application we have large files (up to 900MB, typically 100MB). These files contain a clear text representation of a genome, and are essentially a 1 line file with a sequence of ...
4
votes
1answer
35 views

Softlink in rc0.d is working on poweron rather than shutdown

I want to run a script on poweroff in Ubuntu. so I made a script, placed it in init.d & made a softlink in rc0.d with name S36xyz. my script is working perfectly when I run it in terminal. so ...
1
vote
1answer
34 views

How to test new kernel releases ?

I am using ubuntu 14.04 with linux kernel 3.13.0-37-generic . I know that the latest stable release of the kernel is 3.17.01 and want to test it. Can I test it on my system without blowing away my ...
1
vote
1answer
29 views

Resize of VirtualBox Screen?

I've recently installed the Guest Additions CD on my windows VirtualBox running Ubuntu 14.04. It was working great for a while - screen resized automatically, etc. However, when I turned off my host ...
1
vote
1answer
27 views

.xsession and .xinitrc not executed at login

This is the content of my ~/.xsession: #!/bin/bash # Tray for skype, keyboard layout, ... trayer --edge top --align right --SetDockType true --SetPartialStrut true --expand true --width 10 ...
1
vote
1answer
29 views

Where should my authorized_keys file be if I want to ssh to `localhost`?

I have my public / private key setup, but I don't know where it should go. Should both these files be placed in ~/.ssh/ for my user?
0
votes
1answer
59 views

SSH Pub Key Login without Password

I am configuring an SSH Server on Ubuntu 14.04.1 Server Edition. The goal is to use public key authentication only and only permit certain usernames. My public and private keys are created and a ...