A family of Unix-like operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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Alt-tab within VNC and back to my desktop

My local desktop is Windows 7, and my remote Linux machine is Ubuntu + Gnome. I access my linux machine via VNCViewer. When I'm working on my desktop, Alt+Tab switches between my desktop programs. ...
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18 views

Command to fetch a list of urls with connection keep-alive but fail on the first error (404/500)

I am trying to reproduce a potential bug in the Jetty web server with regard to serving static files. I need to repeatedly download a list of urls with "Connection: keep-alive" until one of them ...
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23 views

Motion daemon causes 100% cpu when stopped

I have setup the motion video detection system on Ubuntu 14.04 and want to start and stop it via cron so that it's not capturing pictures when the room is normally in use. It all works fine until I ...
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15 views

dadcomputer.home appears as dadcomputer.lan-when logging in to another computer

I changed ADSL router recently (from BT home hub 4 to technicolour tg582n) and now dadcomputer.home (ubuntu) appears as dadcomputer.lan when logging into my freeciv server, or SSHing into another ...
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9 views

How to configure live DVD based OS to install packages to hard drive?

If I'm running a live DVD operating system (specifically Debian) is there any way that I can configure the OS to install packages to the hard drive that is in the computer rather than storage that is ...
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64 views

How to disable some cores on Intel machine

I have a machine with two Intel(R) Xeon(R) CPU E5-2618L v3 processor, which has 8 cores on each socket. I only want the OS or hypervisor (such as Xen) on the machine to detect only one socket and ...
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43 views

ffmpeg on Intel Edison cannot find pkg-config

I've had a surprisingly difficult time finding documentation for what I'm seeing. I'm cross-compiling ffmpeg for the Intel Edison using the poky linux sdk. I've set up an upper level makefile to do ...
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171 views

Memory heirarchies and kernel boot options

I'm booting a Ubuntu 14.04.3 LTS server on a Core-i5 T5200U machine with kernel boot options agp=off ipv6.disable=1 intremap=no_x2apic_optout biosdevname=0 audit=0. When I inspect dmesg, I see the ...
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52 views

script to mount a dm-crypt partition with luks

I'm going to use dm-crypt and luks on raspbian, a linux distribution for the raspberry pi. I was wandering if you have any suggestion to automate the mount - umount of the partition, or if you suggest ...
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16 views

Stop bash script with any key

I'm writing a script which I want to stop with any key I choose. After pressing the key, my intention is to complete all my commands at that moment and start su. I've tried adding a & to my ...
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47 views

Is there a way to completely disable TCP keepalive?

I'm trying to disable TCP Keepalive in a linux machine. If I set the three keepalive parameters to 0, the machine refuses connections. sysctl net.ipv4.tcp_keepalive_time=0 sysctl ...
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35 views

Slow Qt resize on Gnome 3

I am experiencing slow resize behaviour for Qt applications on Gome 3(.18) on Fedora 23. The problem is that the bounding window resizes faster than the contents and random flicker or whatever its ...
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37 views

Keyboard/mouse layout changed and weird commands in logs. Was I hacked? (OSX)

Edit: Looks like my colleagues had some fun. False alarm. My work computer is running OSX Yosemite 10.10.1. I noticed my keyboard layout was changed to Dvorak and my mouse direction reversed when ...
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47 views

On which version of Linux Kernel the usb enumeration changed?

Grettings. I'm trying to build a new and customized version of linux using LFS guides and etc. The thing about doing this is because I'm trying to build a linux kernel where the usb enumeration was ...
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20 views

Using 16 TB volumes with the ext3 filesystem on a Drobo Pro

There seems to be a limit to the usable volume size on the Drobo Pro disk array that only applies when using the ext3 file system. On other file systems, volumes can be 16 TB, but for ext3, Drobo ...
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18 views

What does atop 'cache' output really mean?

The atop man page says: An occupation percentage of 90% is considered 'critical'. Notice that this occupation percentage is the accumulated memory consumption of the kernel (including slab) ...
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31 views

Adding a non-Windows VHD to the Windows 8 boot menu

I have a Linux VM running as a Hyper-V guest within my Windows 8.1 box. Can I add this VM to the Windows boot menu in order to run it on the bare metal? If yes, then which property values do I need ...
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38 views

Is it possible to get separate X11 screens in a multi-monitor VirtualBox Linux guest?

I have an application that is designed to use two separate X11 screens (:0.0 and :0.1) which I would like to run with a Redhat VirtualBox guest. I have set up the guest additions and vboxvideo in ...
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81 views

Constant disconnection Ubuntu 14.04

I had a similar problem before, I tried many many distros before (debian,arch,fedora) and had the problem of constant disconnection and the authentication bug. It was persistent , which made me think ...
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20 views

Software wifi bridge cant authenticate to access point for reason 3

I have a Edimax EW-7811Un USB-dongle and try to build up a software bridge between wired (eth0) and wireless (wlan1) interface. The wlan interface should work in client mode so no hostapd is needed. I ...
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49 views

Vagrant shell provisioner does not respond

I am provisioning a VM through shell script in AWS using vagrant-aws plugin. VM gets launched and the shell script gets executed but I don't see any update on the shell prompt. It used to get updated ...
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26 views

What is happening on a Mac computer when you rename a (e.g.) Word File without closing it

Other posts have asked if this is possible... Is it possible to rename an open Word document without closing it? I am asking what happens and how it is programmed. I would have thought that some ...
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24 views

Linux - How to not receive broadcast warning message about low disk

I mount a remote host to my system during debug because the source code is on that host, but after I do the mount, I keep receiving the warning message: Broadcast message from root@<the host> ...
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12 views

How to delete files from a tarball by owner or version? Tarball contains files from multiple owners

I was deleting and appending files to a already existing tarball (meaning created by someone else other than me) but now I have duplicated directories from different owners and even from the same ...
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12 views

LVM partitioned with 3 distros. Missing /sbin/init on some boot options

So I've installed Ubuntu with LVM and added Antegeros and Debian on seperate LVM partitions with them all sharing the same home. I can boot all of them if I select a particular Linux kernel version or ...
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44 views

How to Enable wifi Channel 12 on ubuntu laptop?

I need to enable on my laptop channel 12 to connect to a specific wireless network. That network is not mine so I must fix the problem on my laptop. I have dual boot (Windows/Linux) in Windows ...
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30 views

Will GParted deactivate cause data loss?

I am using GParted Live CD to resize a Fedora external USB drive. I have a locked lvm2 pv disk on GParted. I have to deactivate it in order to shrink it, according to my online search. But that ...
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54 views

Create, connect and disconnect a PPPoE connection

What I'd like to do is create a PPPoE connection and than have the possibility to connect and disconnect them changing IP. I was able to make this thing using Windows: I created a simple PPPoE ...
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23 views

using conditionals in environment modules

I am on a CentOS 6.6 system and I am trying to create some environmental modules. I have a package, HTSeq-0.6.1 that uses python and I wanted to have a conditional that checks the current version of ...
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66 views

Filesystem failing to mount on boot, but OK when mounted manually

not sure when/why this started happening, but I have a RAID array entered in my /etc/fstab to mount on boot to /mnt/data. Up until today everything has been fine, and it's been that way for several ...
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13 views

What does this XML block for CPU do?

I'm having trouble getting a CPU configured. The problem CPU configuration is shown below. However, I have a good configuration and I am trying to understand what it does so I can add pieces of it to ...
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27 views

What are these 'Ghost' files, visible over CIFS but not on the host machine?

I'm trying to restore a Perforce depot from a Linux based (Thecus) NAS but I'm getting different results when looking at the mount from the server vs logging into the NAS via SSH directly I'm at a ...
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38 views

Native Debian X32 Virtual Machine?

I'm trying to setup a native Debian X32 virtual machine. Note that X32 is different than X86 and X64. For details, see Difference between x86, x32, and x64 architectures? on Stack Overflow. Some other ...
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109 views

pulseaudio/bluetooth - systemwide mode issues

The target is to use a RaspberryPi B+ with a bluetooth dongle as a bluetooth a2dp audio sink. Since this system is old and has only one purpose of being the sound sink, I run pulseaudio in system ...
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61 views

How to solve Kernel discrepancy

I am running Centos 7, when I tried to upgrade the kernel or check the version it shows me an older version running. Yet it seems the newer one is in place and installed. Any idea how to fix this ...
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25 views

Using Wine for only one game? How to avoid malware?

I would like to avoid being able to run Windows malware with Wine. I have Xubuntu 14.04 and when I install Wine it automatically associates filetypes .exe... etc with Wine so it is pretty easy to get ...
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47 views

Why image is blurrier in Windows than in Linux (Ubuntu)?

While viewing an image on Facebook using Google Chrome, I was very surprised to notice (indeed, I noticed it while viewing it) that it better (sharper) on Linux than on Windows, which you can see ...
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18 views

How does Windows 10 stand up to being relocated?

I'd like to rearrange how my hard drive is laid out, and I'd like to take my Windows 10 partition and put it's own separate, smaller drive. If I'm using grub to boot, can I just run update-grub and ...
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29 views

Unable to open android studio IDE on Linux mint

This is the problem: # A fatal error has been detected by the Java Runtime Environment: # # SIGILL (0x4) at pc=0x00007f4c71aa89e7, pid=2765, tid=139964951590656 # # JRE version: Java(TM) SE Runtime ...
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34 views

What is Other Execute on Linux and How Do I Fix This To Allow Windows to Hide/Unhide Files on An NTFS Samba Share (All Files Are Stuck Hidden)

I've made a Samba share of an NTFS drive and I access the NAS from Windows. However, I can't hide any files through Windows by accessing properties and checking hidden. I then learned that if I add ...
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48 views

Create a remote session able to use a screen larger than allowed by remote hardware

I am trying to use an ubuntu 14.10 laptop with a large screen (2 monitors actually) which size is way larger than its graphics card limits. So I thought to use it via LAN (1Gb/s): with "ssh -X ..." ...
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19 views

How to listen for system level services in user level instance of systemd

Is there a way to use WantedBy, Requires, etc from a user level systemd instance to a system level systemd unit? I'd like to add WantedBy=<system_level_target>.target in my user level instance. ...
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106 views

Iwlwifi drivers not found while Kali Linux Installation

I am trying to make dual boot of Windows 8.1(already installed) and Linux Kali. I found file missing iwlwifi.ucode. Insert a removable media to install. I skipped the step. After installation while ...
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46 views

Ethernet Unidentified Network (Windows 8.1) after linux Installation

the title says it all. but i'd like to add some detail about this error.im dual booting windows 8.1 and fedora 23 yesterday. in linux all of my network adapter is working perfectly fine but, after i ...
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16 views

Is it possible to automatically compile a LaTeX document through terminal using TeXworks?

I want to create an alias to automatically compile the main .tex file of a big document in LaTeX under Debian Wheezy. That means I need a shell command to do so. Is this possible? I am currently ...
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33 views

Why won't `date` accept it's own default output?

On my system right now by default date outputs: $ date Fri 29 Jan 22:04:26 GMT 2016 However if I try to feed dates of this format back into date it results in "invalid date": $ date -d "$(date)" ...
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54 views

NSCA “cache” directory /nagios/var/spool/checkresults

I've inherited an old nagios 3 environment with NSCA implemented on CENT 5. It is integrated into my companies datacenter software so much that we now cannot upgrade it. We are building a new ...
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35 views

Disk partitioning, partition shrinking for triple-boot

I have the following situation on my main SSD: Boot EFI Windows 10 main (C:) Linux SWAP Ubuntu 15.10 main FAT 32 automounted common partition Now, I would like to add Kali Linux and triple-boot my ...
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67 views

How to setup grub fallback functionality for Centos-7

I have multi-boot environment Centos-7.1(Kernel-4.2.6 on /dev/sda3) Centos-7.1(kernel-3.10 on /dev/sda2). I want to boot through Centos-7.1(kernel-3.10 /dev/sda2) on failure of Newly installed ...
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27 views

SSH: Failed to authenticate with keys with a particular file name

all. I deployed a new VPS on ConoHa yesterday, and normally used ssh-keygen to generate a new key pair whose file name was conoha. But I found I couldn't pass the SSH authentication with this key, ...