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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Debian shutdown takes a long time (RAID/crypt related)

I'm running Debian Jessie and recently my shutdown has been taking a long time. When I sudo shutdown -h now I'm sent to a blank screen except for a blinking cursor which sits for ~1 minute. It then ...
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16 views

Detect vga signals from command line

Currently I am working on Ubuntu 12.10. I am using vga2usb device for interacting with other vga devices such as monitors. Is there any command line utility or any specific command from which I can ...
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34 views

Printer configurations on Linux: Providing privilege to normal users

I am on a CentOS machine. Everything is working fine, I can configure the printer with the GUI System->Administration->Printing. It asks for root password and then I can make the configurations. ...
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26 views

Best practise for debbuging hdd

I just logged onto my machine when suddenly ls gave me an Input/output error. After rebooting the machine /dev/sda1 could not be mounted. dmesg results in : [ 545.691453] EXT4-fs (sda): VFS: Can't ...
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53 views

LC_LOCALE settings interactions between Mac OSX and LINUX via SSH

I have been struggling with the following problem for years now. I have never been able to solve it, and I adopted several workarounds to keep being able to work. However now I can't stand it anymore, ...
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16 views

Can I configure GNOME 3 to move a window to it's own workspace when maximized?

I'm using GNOME Shell 3.10 and would like to have each maximized window moved to its own workspace automatically. Ideally I'd also like GNOME to prevent any workspace from having more than one ...
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22 views

What does dbconfig-common do? Should I use it?

For several packages, the installer asks you if you'd like to use 'dbconfig-common'. After some Googling, I can't really find (in plain old English) what the heck that package brings to the table, ...
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32 views

Is there a tool like dm-crypt/luks using RSA encryption?

Is there a library/tool available for linux, similar to dm-crypt/LUKS using RSA encryption instead of symmetric ciphers? I want the "public side" to only be able to create these volumes, and the ...
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122 views

“screen is terminating” for non-root

When I try to run screen as a non-root user I get: screen [screen is terminating] immediately, though it works fine for root ls -alh /usr/bin/screen -rwxr-sr-x 1 root screen 465K Jun 9 20:30 ...
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50 views

Stuck on GRUB command prompt after regular kernel update

I am running Debian Wheezy. Update Manager suggest to install kernel update. After update, I reboot system but instead of listing all the kernels (bootloader), it gave me a GRUB command prompt: ...
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37 views

How to use DVD+RW (UDF) both in windows and linux?

I have dvd+rw disk. I would like to create UDF file system on it to use with windows 7 (and newer) and gentoo both. How must I prepare media and what commands should use to mount it in linux? What I ...
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60 views

Block all outgoing traffic for a User running Wine apps

Good day, I'm using a lot of WINE apps under Linux which work just fine, but one thing I am specifically looking for right now is to block their access to the internet (outgoing), with exception of ...
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65 views

SSHD Consuming 100% of CPU (Hundreds of processes) - Will not die

Recently I've noticed that SSHd on a few systems I administrate will start spawning unstoppable processes which will consume huge amounts of CPU. The syscall shows that the processes are all ...
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19 views

Download yum packages on Debian for an offline fedora20 system

I need to download YUM packages (namely java-1.7.0-openjdk, gstreamer-plugins-good, gstreamer-plugins-bad and gstreamer-plugins-ugly) for an offline Fedora 20 machine, and I'm working on a Debian 7. ...
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94 views

How to register shutdown script on Amazon Linux in AWS EC2

I am using Amazon Linux (RH-based distro) in AWS EC2. I followed the structure of /usr/share/doc/initscripts-*/sysvinitfiles to create an init script in /etc/init.d. /etc/init.d/do_something ...
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181 views

Why does NTP require bi-directional firewall access to UDP port 123?

From What are the iptables rules to permit ntp?: iptables -A INPUT -p udp --dport 123 -j ACCEPT iptables -A OUTPUT -p udp --sport 123 -j ACCEPT Also, from the NTP website: ... ntpd requires ...
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845 views

Perf samples too long, lowering kernel.perf_event_max_sample rate to

My machine freezes from time to time and I can get it working back by pressing the space key. I have this problem since two weeks now, but it was just once per day max. Now it's starting to be many ...
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125 views

linux catalyst and three monitors

I just switched from opensource ati driver to catalyst because I had many crashes on my linux box when playing flash videos. It looks like with fglrx my system is more stable, but I lost my third ...
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73 views

rasperry pi / debian / directory mount issue

I have trouble regarding to external USB disk write operations I am using Rasperry Pi box with Debian Linux root@raspberrypi:~# umount /dev/sda1 root@raspberrypi:~# mkdir /media/extGrayUSB ...
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59 views

How to use wget to download images from messages on facebook?

This look a bit harder than usual. I'm a new user wget and i was thinking that maybe it's possible to somehow login into facebook and download only images from a specific conversation. I mean, i'd ...
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42 views

Sudo works as su

Ive observed kind of strange behaviour. I have openSuse and when Im in console and want to gain root access for executing one command, after typing sudo it like switches me as if Id type su. ...
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43 views

DNS tunneling through an SSH connection looses connectivity

In the article 'UDP traffic through SSH tunnel', it is described how to tunnel DNS trough a SSH tunnel: client# ssh -N -L 6667:localhost:6667 user@server server# mkfifo /tmp/fifo server# nc -k -l ...
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271 views

tar: Cannot create symlink : File exists

I backup lots of gigebytes files in to myproject.tar.gz, and compress success without errors. Now, I want to decompress all to an folder "myprojects". adan@adan-Latitude-D630:~$ tar zxf ...
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24 views

using pam_mount in WLAN setting

I thought this should be a simple exercise here, but obviously I couldn't find a solution, yet. I use KDE on Ubuntu 12 LTS. I want to use libpam-mount to mount a nfs share to a directory within user's ...
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768 views

Debian: Unable to use mono (missing mscorlib.dll)

I've been trying over the months to use mono on Debian 7 x64 but try after try it never works. I've installed it on several different machines only to come to the same end: mono program.exe The ...
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99 views

Stuck at GRUB prompt after booting, how can I restore normal booting?

My machine was dual-booting with Windows XP and Fedora, then I tried to install Arch. While installation power went off. After that, booting always results in the GRUB prompt. Even when I instruct my ...
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43 views

Preventing unused spare hdd from spinning up during suspend and shutdown

I recently replaced my sata hdd with an ssd, and keeping the hdd in as a spare. It's not used, not event mounted to filesystem. Yet, when suspending or shutting down the system, it quickly spins up, ...
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64 views

Archipel / Xen Orchestra

I'm hoping you can help me to get my head around this! We want to start using virtualisation. We intend to rent a large server in a datacentre and use this. I was excited to see that XenServer is ...
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64 views

Mounting shared directory for chroot users

I ran in to an interesting issue with mounting that doesn't make any sense to me. Basically I have setup a chroot environment for SFTP users, they each have a chroot directory with a format of ...
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39 views

scp doesn't work when my .bashrc is echoing to console

Ok, so I have used linux for a long time but this is the weirdest thing I have encountered in a long time. Maybe I just don't do a lot of scp so probably missing something simple here. So in my ...
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204 views

Debian 7 kernel 3.13.6 - kworker freezes for no reason and takes several processes with it

I have been wracking my brain trying to figure this out. My Linux server will, at random, decide to just hang everything and it is only ONE kworker thread that does it. First the kworker thread ...
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76 views

Short hang on each new window and each closed window in Linux / Gnome Shell

Every time I open a new window on screen, the entire display freezes for 3 seconds. Every time a window is closed, the entire display freezes for 3 seconds. The first few windows after reboot are ...
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543 views

Multiple Linux distributions return “Fast TSC calibration failed” when running on Hyper-V

Client Hyper-V on Windows 8.1 Pro host with Intel Core i7-4800MQ processor. Several Linux distributions, including openSUSE and Kali Linux, return the following error message when booting up in a ...
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18 views

Best way to run service no matter the distro

I am working on an application and want to make the script start on boot, and for the users to be able to run things like service my-program restart What i am seeing is there seems to be different ...
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66 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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53 views

why “date -u” command shows time 25 seconds ahead “export TZ=UTC; date”?

I am running clockspeed-0.62 (DJB software) on ubuntu 13.10. I have setup timezones so that /usr/share/zoneinfo is a link to /usr/share/right, and I have setup an up to date /etc/leapsecs.dat file, ie ...
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132 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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902 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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0answers
48 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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83 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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192 views

Open only the first 10 lines of large CSV file in LibreOffice Calc

I will start receiving many large CSV files, of which only the first few lines are of interest to me. I was hoping to open them by piping only the first few lines to Calc, but this doesn't work: $ ...
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0answers
83 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 ...
2
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0answers
314 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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160 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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124 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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88 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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2k 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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1k 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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0answers
77 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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57 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 ...