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

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Will a Linux NTP server with an upstream Windows time source have any less jitter?

For my infrastructure we have a platform which cannot synchronize over NTP to a W32time service due to too much jitter from the Windows time source. So my question is, if we have a W32time source ...
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213 views

SSH freezing with ControlPersist on

I recently enabled ControlMaster and ControlPersist in SSH so that it reuses and multiplexes connections for speed. The config is: ControlMaster auto ControlPath /tmp/ssh_mux_%h_%p_%r ControlPersist ...
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791 views

Cannot make mobile broadband Vodafone USB connection Ubuntu 13.04

I have Ubuntu 13.04 and I bought yesterday a Vodafone USB stick for internet connection. I am located in Romania. This is what I've did: First Thing Network Connections, added connection. Selected ...
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85 views

Independence of SATA channels and ports

I'm working on setting up a simple RAID and am wondering about how independent my SATA ports really are. There are 4 ports on the motherboard, but lspci shows only two controllers 00:0e.0 IDE ...
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300 views

Why is the kernel and the watchdogs consuming all the CPU?

I run a bunch of heavy user space processes on a powerful Xeon machine (32 virtual processors according to /proc/cpuinfo). The CPU load is normally around 30 and the machine feel responsive, but later ...
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756 views

How to create and use USB network interfaces on debian platforms?

This question is basically a follow up on this question. When the phone is plugged in and the Internet pass-through option is checked then a new RNDIS device(usb0) should be provided. On ubuntu the ...
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156 views

Limit bandwidth on HTTP downloads based on file size

Is there a way to limit lets say in iptables or any proxy solution/software if a user is downloading a filesize that is greater than lets say 20MB it will limit his entire download at 2KB/s? ...
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1k views

Accessing VM on host machine through IP address

I'm trying to set up a CentOS VM with VMware Fusion and get access to it through the host. I was following a tutorial online for this as this is my first time doing this. When I try to access the IP ...
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73 views

Is there a path from OpenSCAD to WebGL?

tl;dr version, Does a software path exist to convert from openscad input to render on a website via webgl? What I'm trying to do is display OpenSCAD created designs uploaded via post on a LEMPy ...
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154 views

rsync: large exclusion list adding 10 hours to sync

I have had an rsync backup script running on a Centos 6 box that has been syncing ~410gb of data from a local (LAN) server over a gigabit connection. This script runs hourly, and if there are no new ...
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202 views

Keep local folder in sync with Samba share

I have a local folder on my Linux Mint desktop (my Dropbox folder, though that shouldn't matter), and I'd like to keep it synced with my school's "datastore" Samba share, which I can connect to from ...
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93 views

How to disable / re-map keyboard keys in the kernel?

I would like to remap my Caps Lock key to either nothing or a key code of my choice. To get the same behaviour across different environments (X / Wayland / non-graphical TTYs), and for learning how ...
2
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0answers
105 views

Windows 7 not showing on Grub 2 list

I have Linux Mint and Windows 7 installed on two separate drives. I have bounced between the two all day (initially trying to get mint to show in the windows boot list, and now working on getting ...
2
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0answers
137 views

Ubuntu 12.04 unable to mount first partition of internal hard drive

I used to have Windows 7 installed, but some day it crashed (or the hard drive crashed, I'm not sure) and the laptop wouldn't boot. So I decided to boot Ubuntu 12.04 from a CD and it worked. For ...
2
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80 views

So I wrote a program… Now how do I package it and automate the install?

I wrote a very simple Linux program which is essentially made up of: a bash script, four python scripts and a text file. I want to package it all together so that when people install it, it ...
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79 views

Why the volume is higher when earphones' jack is not plugged in completely?

This is interesting. When I plug in the jack completely the volume is normal as it should be, but the interesting part is that if I do not plug it completely but leave around 2 mm. of the jack ...
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260 views

Linux noob trying to get headset to work

I am trying to get my headset (Logitech H390) to work on a new linux installation (centos 6.4). Unfortunately I am unable to hear anything from the headset. I have tried several options from the sound ...
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193 views

How is /sbin/init found during lilo boot

I just cloned my root partition (in anticipation of a dist-upgrade), changed lilo.conf and fstab (in the cloned partition) and ran lilo. But alas the system won't boot from the cloned partition. I ...
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36 views

How can I manage interdependencies in a software test environment?

We've got a large and complex test environment in which various product groups test their software before rolling out a new release. One of the challenges to this process is that different product ...
2
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171 views

“GSM only” mode in modem settings in tomato router

I use Shibby tomato firmware in ASUS-N66U. I use the "3G modem" option in it for WAN. it was working fine till now with my SIM's 3G data plan. I would like to use only 2G data from now, is there any ...
2
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533 views

NFS Mounts - Linux/Windows Permissions

I'm trying to mount a NFS-Share where I need specific permissions on the linux-site and a specific user on windows-site who is able to read AND write in this NFS-share. When I mount the share on ...
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134 views

Can't access OSX truecrypt from linux

I have a truecrypt volume generated on osx. I don't remember which filesystem type I chose, but I think it was macosx extended. I am trying to access this disk from linux ubuntu 12.02, but ...
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100 views

Limit user bound ports to arbitrary ranges

Is it possible to allow user to bind only certain ports? For example, I was trying to achieve this: user1: can bind only on ports 4001 and 4002 user2: can bind only on ports 5001 and 5002 and so ...
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82 views

Is it possible to check which stream is used by the command? (bash)

I have an irritating problem: redirecting stderr does not work. I get: iptables: Chain already exists I can't be bothered to check if a chain exists already (pointless, iptables just throws an ...
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137 views

MonoDevelop can't find .so file in LD_LIBRARY_PATH

I'm making a game using MonoGame and a Linux implementation of LuaInterface. However, whenever I try to build the project, MonoDevelop gives an error saying that it is unable to load liblua5.1.so, ...
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143 views

xev says Caps Lock remap worked but other apps don't see it

I'm trying to remap Caps Lock to Control. Before I modify anything, xev reports the following for a press/release of Caps Lock: KeyPress event, serial 73, synthetic NO, window 0x2600001, root ...
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780 views

Arch Linux Install Scripts on MacBook Pro Retina

I've spent many hours trying to configure arch linux on my macbook pro. I get stuck at "Loading initial ram state" when I reboot after install. Here is the script(s), I've created chronicling my ...
2
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233 views

Strange fglrx slow down under Debian

I am getting a weird slowdown on all non-OpenGL applications while running some OpenGL applications such as Chromium (while playing a YouTube video), Steam and Blender. Games are running perfectly ...
2
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0answers
143 views

ssh session occasionally hangs for some time

I have several ssh connections to a server that is in the same LAN as my desktop machine. Some sessions have X forwarding enabled, some don't. Both types of sessions occasionally hang for a couple of ...
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0answers
66 views

How to launch sshuttle without superuser pwd prompt

I love the sshuttle "poor man's VPN", however, having it require me to enter superuser pwd when launching each time makes my life sad. Is there a way I can either elevate the script or modify it in a ...
2
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0answers
186 views

Awesome WM scratchpad with terminator

I've recently started using Awesome WM and trying to recreate a Yakuake-like experience I found the Scratchpad manager. I've tried several configurations to make it work with terminator, and so far ...
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0answers
187 views

Apache memory usage never goes above 5%

I'm deploying an application that uses ImageMagick into VPS server. I tested in on two different OS: Centos6 and Ubuntu Server 12.04. On Centos6, the application is working properly and when ...
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89 views

Matching bracket selection on gnome-terminal, like Mac OSX terminal

I have recently fallen for a (non obvious) feature of the Mac OSX terminal: Given a display of some kind of deeply nested text with lots of matching brackets, parenthesis, or quotes (ie. JSON), the ...
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0answers
155 views

Need noacpi in CentOS 6.4, not in RHEL 6.4

I've been trying to fix a rather odd problem that I've seen on our new Dell R5500 (Xeon based workstations). We want to run CentOS 6.4 64 bit on them. We did a base install which worked fine, however ...
2
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0answers
63 views

upstart-monitor with CLI option fails to start in Ubuntu Server 13.04

When I try starting upstart-monitor on Ubuntu Server 13.04. I get the following error: Traceback (most recent call last): File "/usr/bin/upstart-monitor", line 195, in <module> class ...
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390 views

Debian Wheezy crackling sound on shutdown

Crackling sound is coming out of my internal and external speakers as well when I shutdown or reboot my HP 8540w notebook. lspci | grep Aud 00:1b.0 Audio device: Intel Corporation 5 Series/3400 ...
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217 views

Dual Boot with Windows: Enable numlock

After I installed Ubuntu along with Windows, in both OS's I had to manually enable numlock (despite having enabled a setting for this in the BIOS I believe). Is there a way to enable numlock?
2
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0answers
193 views

Making sysvinit load EVERYTHING in parallel - why does this even work?

I edited /etc/init.d/rc on my Debian machine and changed startup boot to startup boot &. Boot time decreases ridiculously, and no race conditions happen at all. Way faster than even Systemd (which ...
2
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0answers
293 views

Can't connect Wi-Fi on Linux Mint 14

I have got Linux Mint 14 and everything worked fine until today. Today I installed and configured a new router I bought recently, then I tried to connect it. I clicked on the router name in the list ...
2
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0answers
88 views

Explaination needed for strange df and du results

Can someone help me to understand the following output # df -h Filesystem Size Used Avail Use% Mounted on /dev/xvda1 8.0G 7.5G 167M 98% / udev 7.4G 8.0K 7.4G 1% /dev ...
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0answers
172 views

Monitor and injection support broadcom 4313

I have a laptop with the broadcom 4313 wifi card. So far I've tried 2 drivers - brcmsmac and wl. The first is an opensource one and the second is a closed source vendor one. With the brcmsmac I'm ...
2
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0answers
268 views

Is my CentOS library multiarch? And what does that mean?

On CentOS release 6.4, I am trying to run a binary. However, it gives the following complaint: (...) requires "/lib/libuuid.so.1" to function. From a quick search, I can see that the only similar ...
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0answers
132 views

Using pandoc, dzslides and mathjax only works with Firefox

I'm trying to create dzslides with pandoc (v. 1.9.4.2) that contain equations which I want to be rendered by mathjax. Consider the following example: % $\TeX$ test % John Doe % March 22, 2013 ## ...
2
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0answers
85 views

focus changes when changing workspaces in gnome 3

When I change between workspaces in GNOME 3 (I use fallback mode) either by using a keyboard shortcut (Ctrl+Alt+arrow_key) or by clicking on the workspace icon in the taskbar, the window with focus is ...
2
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0answers
455 views

mdadm RAID monitoring no DegradedArray email

So, I have a couple of MDADM RAID arrays and I want to set up monitoring with email notifications for drive failures through sSMTP but I can't seem to get it working. The system in question is a ...
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0answers
155 views

Linux bootloader on USB-stick, load different kernel depending on hardware

I'm experimenting with a setup where I keep my kernel and initrd on a USB stick, and thus I can keep everything on the actual computers fully encrypted. Nothing is stored in clear text, and nothing ...
2
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0answers
147 views

Error compiling and installing mcrypt from source

I'm hoping someone can help shed some light on my current issue. Scenario: Installing libmcrypt, mhash and mcrypt from source in order to compile PHP5.4 with the mcrypt extension enabled. OS: ...
2
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0answers
403 views

Having problems with booting GRUB for EFI on USB stick

Whatever I do, it constantly drops me into the 'bash prompt'. Never displays a menu, nothing. I'm running GRUB on a USB stick formatted as msdos (so, FAT) and when I boot into it, GRUB simply won't ...
2
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0answers
46 views

Is there a way to use an external computer's compiler and fetch results?

I have to use Windows 7 for some reason, but sometimes I need to compile and execute simple programs using C language, which are supposed to work in Linux. All of them are console applications, don't ...
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0answers
249 views

Trying to rescue data from WD My Book Studio II, raid 0

For a friend I'm trying to recover data from a Western Digital My Book Studio II external disk drive enclosure in raid 0 mode. At first I tried to rescue the data under OSX, the OS used by the ...