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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SSH with a private key without passephrase

I have a debian 7 64bits server with my public key inserted into authorized_file. I can connect to my server with putty without problem. But when I try to connect to my server with command line on ...
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How can I reconnect to a dropped gutil ssh session?

I have installed Matlab on a (remote) linux (debian) machine. I run Matlab by tunnelling in from my Osx machine via ssh and then using the command line interface. To run a Matlab script I run ...
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Cannot decompress .tar.xz file, getting “xz: Cannot exec: No such file or directory” from tar

Per How do I uncompress a tarball that uses .xz?, I tried tar xf php-5.6.0RC4.tar.xz and tar -xJf php-5.6.0RC4.tar.xz and in both cases I get the following: tar (child): xz: Cannot exec: No such file ...
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Is there a tool for syncing changes to individual nodes within HDF5 files?

I'm looking for a tool for efficiently syncing large scientific datasets in HDF5 format: Each file is ~20-30GB in size and contains many large floating point arrays, which are usually chunked and ...
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Avoiding users to corrupt and use a script

Is it possible to deny the right to copy files? I have a script which should be executable by others. They are also allowed to read the file (though it would not be a problem to forbid reading). But ...
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File permission issue on NAS (Linux) with Windows

I have a NAS (LaCie 5big NAS Pro). I have a share (using SMB protocol) called backup and backup my Windows 2008 servers on it. I use AISBackup. There's no problem with the backup itself. It works OK. ...
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sshfs too slow while remote editing on Eclipse and other IDEs, what options to use to make it faster. *Not* for mac users

I've been looking into this problem, and it is common. But since there is a package for Mac with the same name, the solution for Mac users is hiding the solution for Linux users and our default sshfs. ...
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Have I misconfigured xrdp? My setup has a security hole

I'm using xrdp/Xvnc to connect to a CentOS 6.5 VM. I don't know whether I've got something wrong with my configuration or whether I've stumbled upon a security hole. My xrdp.ini file contains ...
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10 (count 'em) x-caja-desktop windows open upon Mint 16 login, often

Running Linux Mint 16 Petra on an HP Mini 1101, up-to-date. Since install, sometimes when I log in (as either of two users) exactly ten (at least the last two times, I counted) x-caja-desktop (file ...
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Syslog level of logging

Hello i have syslog daemon, running on server with busy box, it runs with -l 6(LOG_INFO), and if write some info to this log with LOG_NOTICE(witch is equals to 5) should this information be recorded ...
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Raspberry in kiosk mode - How to secure bash or change matchbox for switching tty

I want change my raspberry to a kiosk pc. It works well and is complete, but with some mechanics I've some trouble. The actual problem is, that the autologin mechanism is defeating the purpose of ...
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Word Realms won't start from the Menu anymore on Linux Mint 16

Installed Word Realms on Linux Mint 16 per its included instructions. It worked fine launching from the OS menu, for a time. Now when I try to launch it, same way as always, nothing happens: no ...
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Can I control which physical volume(s) in a volume group will be used first?

I just set up my swap to use LVM, with a volume group that contains two physical volumes: one partition on an SSD and one partition on an HDD (because the space available on my SSD wasn't large enough ...
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blank screen forever trying to switch users on Linux Mint 16 Petra (often)

Our netbook running Mint 16 (all up-to-date) has two users. Since first installing, we have run into two very similar problems going Menu -> Log Out -> Switch User, or going Menu -> System Tools -> ...
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Automaticly run xinit from rc.local as different user

I'm working on some tuning of my raspberry pi b+. So I decided that midori should start automaticly after autologin. With startx it works without problems, but X is still to ressource hungry. So I'll ...
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Is it bad practice to use an init.d service for a script that isn't a daemon

On e.g. Ubuntu, one may run service procps start to reload the files found in /etc/sysctl.d. However, procps isn't a daemon. It terminates when it's done. Is it bad practice to use an init.d ...
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how to skip grub dual boot option menu entirely (without picking an OS to boot)

I'd like to skip the entire Grub 2 interface, where I have to decide booting Linux or Windows im running linux ubuntu lastest version (14.04.1 LTS) and windows 8.1 both 64 bit versions. I've ...
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linux-headers and images in ubuntu after installing vmware-tools

a noob question. Can I run dist-upgrade for linux-headers and images in ubuntu after installing vmware-tools? I ask this because i think vmware-tools also install something like a header and image ...
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Can't start mariadb in centos 7

in the systemctl status it shows: systemctl status mariadb.service mariadb.service - MariaDB database server Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled) Active: failed ...
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Linux kernel devices enumeration

What are the different techniques used at boot stage by the Linux kernel to detect hardware devices? The Linux founder being not very fond of ACPI, how is it used by the kernel in the discovery ...
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USB headset doesn't connect automatically when plugged-in in CentOS 6.5

The USB headsets are not automatically selected when plugged-out and back in, it must be manually done each time. So far, I have tried to modify /etc/pulse/default.pa to include a module I have ...
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2answers
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gnome 3 is more like gnome 2

I recently installed debian 7.6 on my laptop and have been trying to get everything configured the way I like. However gnome 3 is looking more like gnome 2, with the Applications and Places menus that ...
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1answer
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dynamic ip to hostname mapping in LAN [duplicate]

I want to access PC in LAN from other devices. I cannot use static ip for my PC. Is there a way to use hostname instead of dynamic ip to access PC so that even if ip changes i can access PC with its ...
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Deleted part mapped to /home, how to map the new one (LUKS)?

I have 2 disks on my computer, on each I have a partition for a Linux Mint 17 installation. Both encrypted using LUKS. The other day, I deleted the partition mapped to /home. Now, I created another ...
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Application not themed when run with gksu instead of sudo

Slightly nitpicky, but when running applications on Linux Mint 17 from a terminal using "sudo", the application gains root privileges and is nicely themed. If I use "gksu" or "gksudo", the application ...
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1answer
19 views

Software installation script says “loopback not defined in ifconfig”

I'm trying to install a software by IBM in CentOS 7 and the installation script does a few environment checkings to make sure everything is working. The script is saying that "loopback not defined in ...
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CentOS 6 Getting Sudo to show the display in a FreeNX session

My platform is a 32-bit installation of CentOS 6.4 with a gnome desktop and the FreeNX server. When I log into an NX session (usually using NoMachine NX Client), and then try to open an application ...
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Installing Debian 7.6.0 on Lenovo Y50

I was trying to install Debian on my new laptop: a Lenovo Y50 64bit running Windows 8. I got together with a friend and installed Debian in his computer first and had no problems. However I've tried ...
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How do I set different background images for different monitors in Gnome 3.10?

How do I set different background images for different monitors in Gnome 3.10? As one monitor is 1360x768 and another is 1920x1080 it is not possible to use the Span feature and keep proper aspect ...
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Ubuntu How to configure networking to support two NICs

ifconfig shows em1, lo, and p3p1 (not connected) when the interfaces file does not include p3p1 but when I do include p3p1 and restart only em1 and lo show up with ifconfig. What am I doing wrong? ...
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mount cifs: input/output error

I'm running fedora 20. I can connect successfully to a shared Windows folder via files > connect to server; however, when I try mounting the share manually I get various errors: sudo mount.cifs ...
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What is the CPU microcode?

Today after unpacking the initramfs file from my Linux /boot directory I found that it contains the GenuineIntel.bin file, and that that file is an image of what is called the CPU microcode. Then I ...
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VirtualBox: Grub sees hard drive, Linux does not

I installed Linux on my second hard drive. I can boot to it just fine. But when I try to boot it from a Windows 7 host using a raw host hard disk, grub sees it and can load vmlinuz and initramfs. ...
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What did Emulator do to my laptop?

I played SEGA with my KEGA.exe (Sega Emulator) and it made my right key malfunction. Before that I had also played it in my notebook with fullscreen mode, and suddenly my ACER Aspire One notebook ...
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Interpret edid information to get manufacturer and type number of my laptop screen panel, especially what is “SEC”

I want to find out the manufacturer and type number of my linux laptop screen panel and look up some specs on the net for example on http://www.panelook.com/. So I did: cat ...
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1answer
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ssh login with key can't connect although go an ssh key

I have my 2 servers that I want to connect one to another with ssh. I am the user --> userA in serverA, and I have this config file in .ssh folder Host git HostName git.OURSITE.com ...
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Ubuntu Linux 32bit or 64bit for flash drive

I am going to download Ubuntu and put it on a flash drive so i can have a portable OS. I am going to be using it on a selection of different PC's and i was wondering if i should choose 32bit or 64bit. ...
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Is it safe to format this partition?

On a ubuntu server I own, I am running out of space. When I ran sudo parted /dev/sda -l to find all available drives, I got this: Model: ATA ST31000528AS (scsi) Disk /dev/sda: 1000GB Sector size ...
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How to completely delete Chrome OS and replace it with linux?

as you can see in the title I have a question regarding chrombooks. I would like to format the internal storage and install Linux (manjaro hopefully) and I would prefer to not have to use crouton. The ...
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How to make a machine accessible from the LAN using its hostname instead of dynamic ip [duplicate]

I want access my PC using its hostname from other devices in LAN. I cannot use static IP address. Is there a way to do this? I am using Ubuntu OS.
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1answer
18 views

Alsa hardware volume with PulseAudio

Before installing pulseaudio, I was able to control volume for the front (meaning on the front panel, the "headphone" jack) and rear (meaning on the back panel, the "line out" jack) separately. When ...
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Compressing an OS after some slight changes has yielded massively different results - why?

I am using SUSE Linux on a Virtual Machine through VMWare Workstation. This morning, I zipped up a copy of the folder containing my VM (.vmx, .vmdk, .vmem, single snapshot and all) and sent it to my ...
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1answer
24 views

Is \d equal to [0-9] in sed?

7 00:00:30,008 --> 00:00:30,066 by line 8 00:00:31,038 --> 00:00:34,050 or later in the nineteen seventies it was usually a 9 00:00:34,005 --> 00:00:38,634^M video consul but the council was ...
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1answer
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After each command tmux prints: ps1_update: command not found

On Linux Ubuntu 11.04, after each command (cd, ls, vim...) successful or not, tmux prints out as a last line ps1_update: command not found. Is there any config option I am missing? Thank you very ...
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1answer
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How to recover files stored in a virtual machine running linux in windows 7

I was running XUBUNTU in VMware workstation 10. Once when i was updating the vitual machine, it got stuck. then i killed the process and after that when I was going to power on it again, it doesn't ...
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1answer
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What does errno in fs.lstat err variable means?

i wrote this sample code to replicate Lstat error. var fs=require("fs"); var path="/home/unixroot/Desktop/zookeeper1"; fs.lstat(path,function(err,stats){ if(err) { ...
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linux reverse engineer to find process source

A compromised wordpress site has started several processes that run as the apache user. I can find these processes by running ps and greping for the apache user. Then I take one of the process IDs and ...
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wireless internet in linux is very very slow… but in windows… everythnings fine

yesterday when i was connecting to our neighbors wifi connection which is the signal strength is below 50%, i cant browse anything... even ping to gateway. 100% packet loss, and sometimes.. i can ...
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1answer
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What does it mean in the man page of shutdown that Requests that the system be halted after it has been brought down?

Today when I was reading the man page of shutdown, it made me confused a lot. Take -H as example. I just could not understand the "after it has been brought down". What does it specify exactly? What ...
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Can't start X: “intel(0): Failed to set backlight acpi_video0”

I originally posted this to the ArchLinux forumns but didn't have much luck there: https://bbs.archlinux.org/viewtopic.php?id=185800 I was trying to adjust my laptop brightness, and after running ...