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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How to type special characters in Linux when Russian layout is active?

The way to type special unicode characters in Linux is to press Ctrl + Shift + u and then to type the character number. But this method doesn't work when Russian layout is active. So if I'm typing in ...
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114 views

btrfs does not show drive as missing

I am trying out btrfs and I noticed some funny behaviour: I have two drives in a raid 1 configuration. sudo btrfs fi show Label: none uuid: 52b9c6f6-ce5c-4727-861e-e2fd012e475f Total devices 2 ...
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1k views

USB disk not auto-mounting in Ubuntu 12.04

It used to, but suddenly now it doesn't. The device shows up in the following: dmesg | tail -1 [394191.758315] usb 2-1.3: new high-speed USB device number 9 using ehci_hcd ...which I know is the ...
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143 views

Adding nonstandard files to a checkinstall package

I am experimenting with checkinstall to manage custom builds of software. I would like to add custom files to a package, e.g. /etc/init.d/nginx when installing nginx. The --include parameter is a ...
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47 views

mixing sound from multiple users' processes on linux

As in the title. Is it possible without setting up a system-wide pulse server to mix audio output from multiple processes owned by different users on Linux? I have no trouble mixing audio when all ...
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325 views

Lightdm, x11vnc two seats: VNC keyboard/mouse input only works if seat is active

I have Lightdm setup to run two seats: XBMC (Seat:0) which uses my monitor xfce (Seat:1) which uses virtual terminal 8 This way I can switch between them using Crtl-Alt-F7/F8 I use x11vnc to ...
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104 views

Change group or permissions when a file is moved to a shared directory on Linux

I've set up a Linux server accessible with ssh and Samba share. Every user has his own folder USER/ and a public folder USER_public/. Permissions on the USER_public/ are set up using setfacl in such ...
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110 views

Consolidation of Free Space on Ext4

I'm building an linux installation which then will be pushed to various devices with different means of mass storage. Therefore, I'd like to shorten the partitions lengths before creating an image to ...
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101 views

Why does the “date -u” command show time 25 seconds ahead of “export TZ=UTC; date”?

I am running clockspeed-0.62 (DJB software) on Ubuntu 13.10 (Saucy Salamander). I have setup time zones so that /usr/share/zoneinfo is a link to /usr/share/right, and I have setup an up-to-date ...
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84 views

How can I create a CD or USB key that fully restores a Linux install? (a la the CDs that come with Windows boxen)

Whenever I assemble and configure a Linux PC for someone, I always run into the problem of what happens if they want to restore their system back to the way it was when they got it. Either they ...
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122 views

ffmpeg x11grab a single window

Is it possible with ffmpeg grab a window that is minimized or that not has the focus (there is another window over but ffmpeg records only the window which is below)? With a command like ffmpeg -f ...
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219 views

PC reboots after “Welcome to Grub” unless booted from BIOS

I have a Linux machine running on an ASUS P8H77-I. The boot drive is correctly set in the BIOS. If I let it boot normally, I see the Welcome to Grub line, then it reboots, and repeats forever. If I ...
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134 views

VirtualBox error with Ubuntu virtual machine

I am trying to work on a coding project and cannot open my Ubuntu virtual machine with Oracle VM VirtualBox. I took a snapshot yesterday at about 11, and it was working fine. Several times I closed ...
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199 views

xkb set keyboard level 3 chooser to ctrl+alt

The title says it all: I'm interested to mimic the Windows behavior, where Left Ctrl + Left Alt acts as a 3rd level chooser. This is relatively important to me, because, as a programmer, on my ...
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2k views

CHECK_NRPE: Socket timeout after 10 seconds, when trying to read Windows Server 2008

When invoking the check_nrpe via terminal, like so: /usr/lib/nagios/plugins/check_nrpe -H winserver -c alias_cpu I get the error below: CHECK_NRPE: Socket timeout after 10 seconds. (Also ...
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76 views

Can I get urxvt to recognize xmodmap configuration?

i switch from an apple-style keyboard at home to a microsoft-style keyboard at work. the primary difference in these keyboards is that the super key and the alt key are transposed. i've used xmodmap ...
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1k views

How to trace LDAP authentication failures?

1) I have a working LDAP server which I've confirmed can be used with LDAP clients, running on ec2 via jumpbox. 2) I've run authconfig to setup ldap based authentication, to point to the server: ...
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119 views

Migrate LVM to ZFS

I am currently thinking about moving away from my LVM setup to a ZFS setup with RAIDZ. My current setup consists of 5 x 4TB disks in a LVM and a 60GB SSD for the system. At the moment there is about ...
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246 views

How to decrypt a message sent via Pidgin-Encryption?

A friend sent me an offline Google Talk message that was encrypted via Pidgin-Encryption. It didn't appear in my Pidgin logs because I wasn't logged in when it was sent, but I do have the encrypted ...
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513 views

Error mounting external hard drive

When I tried mounting an external hard drive connected via usb I got the error quoted below. So far I've tried using ntfsfix and chkdsk. My operating system is Arch Linux and the drive is NTFS ...
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289 views

Detect network clients connect and disconnect

I have a linux gateway/server, which sharing PPPoE internet connection between network users. Seeking for a proper way to detect when network clients are connected to and disconnected from the ...
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169 views

How to use a key binding within shell script ? (Launch terminator in broadcast mode in background)

I currently use a small shell script to start a terminator window as a background process which has multiple splits specified with a layout. terminator --layout=My_layout & I want to execute a ...
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111 views

KeyRemap4Macbook Vim-emulation alternative for Linux

There is a really nifty tool for Mac OS X called KeyRemap4Macbook which allows you, among other things, to use Vim keybindings to edit text in all text fields, with a distinction between normal and ...
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268 views

How do I disable a bluetooth adapter and install a new one in ubuntu?

I am running Ubuntu 13.04 on a Macbook Pro (8.2). I have a faulty bluetooth antenna that I am not interested in paying to fix. In windows I have a usb bluetooth dongle and I just keep the built in ...
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3k views

Windows 7 & Linux Mint sharing: W7 can't see LM

I have a Linux Mint 15 desktop and Windows 7 laptop that I am attempting to share files and a printer with. I have a bit of an odd problem that I can't figure out how to resolve. I've configured the ...
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2k views

USB flash drive is not detected in Ubuntu 12.04

I have 15GB Kingston flash drive. It is not detected in Ubuntu 12.04 and remains hung up in Windows too. sudo fdisk -l output: WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The ...
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96 views

lowercase 'x' key not working as root under linux

This is a weird one. The title says it all - The lowercase letter 'x' has stopped working as root. It works just fine for other users, and the uppercase form works (Though of course with case ...
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382 views

Linux detects Vaio touchpad as a ImPS/2 Generic Wheel Mouse

I tried this on Ubuntu, Linux Mint and Fedora. My problem is that in these distros, my Vaio VPCSA touchpad is detected as a normal mouse. It works as a simple mouse but multitouch gestures, double ...
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167 views

My Fedora Setup is gone due to accidental “yum upgrade”

How to roll back? I tried yum history undo 143 and yum --skip-broken history undo 143 and get the following errors. Important: All I care about is getting my kernel and custom graphics driver back to ...
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62 views

Can not copy files after installing windows

I am experiencing a weird problem. I was running Xubuntu on my laptop until yesterday that I had to delete Xubuntu and install Windows. I had a NTFS partition on my Xubuntu that I kept some files on ...
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212 views

Raspbian: USB drive mounted and accessible but doesn't show on df -h

I have an USB drive connected to my Raspberry Pi running Raspbian, the directories on it are accessible using cd, ls etc but the drive doesn't show up when running df. It however does show when I run ...
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61 views

Automatic package recompilation on apt-get upgrade

Is it possible to achieve the following setup with apt-get on debian based distros, particulary Ubuntu: I need to compile a package from source (like apt-get source ). Before compilation, I need to ...
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74 views

OS X configurations partially lost when sharing home directory with Linux

I've installed Arch Linux on my Macbook Pro with OS X 10.8.5. I created an HFS+ volume(journalling disabled) for home directories so that my personal data can be shared between the two OSes. ...
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995 views

CentOS 5.10 Yum Packages won't update/upgrade

I've just used yum to install PhpMyAdmin and it installed version 2.11.11.3-2.el5 which is completely out of date since version 4 is out. I've tried running yum update phpmyadmin but I receive No ...
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Ubuntu error Cannot mount USB drive Not Authorized

I have a Ubuntu 11.10 Desktop. Until now I was able to mount any external drives (USB flash drives which have FAT, SD Cards having ext4 partitions/filesystems using USB SD Card adapters). Both of ...
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59 views

X window (or whole linux system) replace Caps Lock with ESC *and* Control

on windows there are several key maps applications that replaces Caps lock with ESC on a single 'press and relase' and with a Control signal if hold and another key is pressed. Is there any way to do ...
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396 views

Lubuntu LiveCD disabling auto-mount.

In cooperation with my IT teacher we want to boot all PC's in IT class with Lubuntu. I've successfully set up PXE server, but there is one thing that worries us. Harddrives shouldn't be accessible ...
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157 views

Why rebooting the system takes longer than a shutdown in fedora?

I'm a fedora (19/ x86-64) user. When I power off the system, it always takes about 3 to 4 seconds to shut down. But whenever I reboot the system, it takes the system much longer (about 30 seconds or ...
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3k views

Show hidden folders and files on Fedora 19

I'm in the middle of a migration from Ubuntu to Fedora. How do I make Nautilis in Fedora show the hidden files and folders (those with a dot)? It's Nautilus 3.8.2, if I go to Preferences and choose ...
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428 views

Computer wont finish booting after I install a third graphics card

I'm running xubuntu on this motherboard and three sapphire 7950 graphics cards. The computer boots and works fine when I have just two of them installed, but when I attach the third the computer stops ...
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359 views

Getting i/o statistics of a process per file

I have a process of I would like to monitor the i/o with some precision. I know the PID, but I can't really control the way it is started (so I can't really put a pv-like command in between). What I ...
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148 views

Share Windows PPPOE connection with Linux

I have a windows computer connected wirelessly to router and connected to Raspberry Pi (Raspbian Linux) with LAN cable. I need to connect to PPPOE connection and enter my credentials to connect to ...
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276 views

Reuse Linux SSH-Key with MacOS

I want to use an SSH-Private-Key generated on Debian 7 with my MacOS-Machine. So I copied id_rsa and id_rsa.pub to .ssh/ on my Mac. The Key is recognized, but every time I enter my passphrase the ...
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185 views

Can't access my drives from open suse 12.3

I just installed linux along with my Windows 7 in separate drives. Now when I try to access hard drives from linux it shows error as: An error occurred while accessing 'Home',the system responded: ...
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108 views

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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256 views

How to backup Linux VPS from Windows via ssh/rsync?

There are a Linux VPS with my hobby projects and my home computer with Windows 7. Windows client is located behind provider's NAT with dynamic IP. VPS server is only accessible with ssh. Is there any ...
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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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216 views

Mobileorg not finding emacs org file with ssh server (but it is there)

I'm just getting starting using org-mode with Emacs - I thought I'd use it as an alternative to Evernote. Having it on my mobile is pretty important (I'm using the Android version). I'm getting the ...
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283 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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2k 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 ...