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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VirtualBox SLES12 install GuestAdditions

I'm trying to install the guest additions in my sles12 guest system (host is win7). I followed the guide in the virtualbox-forum faq and the official tutorial on their website but this doesnt work. ...
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Tty and X session locking

Most GUIs lock the session after a period of idleness or after resuming from sleep, which means that the user is require to reauthenticate themselves to continue the session. Can this be mirrored in ...
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Jumping to previous prompt in terminal

In a terminal, are there any shortcuts to jump to a previous/next prompt? Scrolling up and trying to find the start of a log slows down my workflow. I'm using iTerm on OSX, but this should be ...
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What is the difference between a Display Manager and Desktop Environment?

I know that a Window Manager just manages windows, and can basically be used with any DE. My question is what is the difference between a display manager and a desktop environment? I ask this because ...
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ZFS not writing continuously to array

Preface: I'm by no means an expert Linux user, but I've played with Linux enough to be dangerous. I'm building a personal server, basically just to use as storage for video and photos. Current specs ...
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How to find configuration that wil emulate specific network conditions with netem / tc?

We had our otherwise well tested application fail once it was deployed on a device connected via a poor wan connection. To be able to debug this we want to reproduce the bad network conditions in a ...
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1answer
18 views

Grep matching lines but return matching key IDs in GnuPG output

Having this input: rsa2048/C7927B82 2015-08-30 rsa2048/FB2D99F9 2015-08-30 I want grep to only return the key ID, for example: C7927B92. Using the pattern from Grep characters before and after ...
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remove windows 8.1 and replace with centos 7

An Acer Aspire T desktop computer came pre-installed with Windows 8.1. I would like to completely erase windows 8.1 forever from the machine, and replace it with CentOS 7. How can I accomplish this? ...
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1answer
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How can I get Git to ignore/drop files I have deleted or that are only file-system artifacts (ending in ~)?

I would like my git repository to show only files that currently exist in the directory. In particular, I just pushed my git project to a remote repository on github.com, and now it's showing all ...
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how to xset dpms force off only one monitor?

I have multi headed setup using KDE display manager with proprietary nvidia drivers (no xinerama, single X server). Usually I keep only some server monitoring stuff on second monitor, eventually web ...
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1answer
24 views

Shred File without overwriting blocks

AFAIK, a file on a file system has two components. The pointer that stores the directory path of the file. Also stores the list of sectors/blocks on the disk that the file is composed of. The real ...
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1answer
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Linux: Presenting a larger-than-real file system?

Does anybody know if it's possible to have a small Linux filesystem with apparently limitless (or very big) free space? We have a Samba server with lots of filesystems, all available from a small ...
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Scaling and rotation of image without depending on EXIF data?

Is there such a thing as a simple image editor for Linux which allowed for scaling and rotating the image without using EXIF data for the scaling and rotation? So far have I tried EOG, Shotwell, and ...
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deleted linux mint from windows 8 dual boot reinstalled linux can't make it work

I have a lenovo g710 laptop with windows 8.1 preinstalled.I made a dual boot with linux mint and everything was ok.Then i did something in linux terminal and when i restarted the pc linux wouldn't ...
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16 views

Unable to run yum command

I'm unable to run yum command on my Linux machine. I'm getting the following errors: dispsim:~$ yum Failed to set locale, defaulting to C Loading "rhnplugin" plugin Loading "security" plugin error: ...
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1answer
10 views

tuleap and agiledashboard plugin

after I've installed and enabled agiledashboard plugin, I'm not able to access web home of Tuleap anymore. I found the following kind of error in httpd log: [Mon Aug 31 10:48:10 2015] [error] ...
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1answer
15 views

Linux kernel working only on kernel mode

Porting the Linux kernel to an architecture that has no execution modes (is always in kernel mode) and has no MMUs seems like a very unprotected system. Would it be possible to make Linux run in that ...
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proc/meminfo :MemTotal vs MemFree

There is an excellent summary of the various stats returned by proc/meminfo in this SU thread. However,it does not explain the MemAvailable statistic which I gather is relatively new. I am assuming ...
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1answer
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How to boot into single-user mode (runlevel 1) without entering root password?

In Fedora 22 and Ubuntu 15.04, whenever I boot into "single-user"/"recovery" mode, I'm asked for the root password. This is a new behavior; I remember that it used to drop me straight into the root ...
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1answer
21 views

sed option to preserve file times during a find/replace?

I'm trying to modify some Autotool files because a project is not honoring my CFLAGS, CXXFLAGS and LDFLAGS. I located some areas where I could likely make the change with a grep for libtool: link. ...
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Is it possible to copy files that skip the file system?

I got many files(for a 4TB HD, 50M+ file count) to upload to S3. To make it multi-worker upload, I have adopted tmpfs to enable concurrent upload, and there may be 1 or 2 copy-to-tmpfs worker that ...
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2answers
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Kali => ssh_exchange_identification: Connection closed by remote host

I'm using Kali Linux to connect to a server remotely using SSH, it used to work out, but suddenly I got the message: ssh_exchange_identification: Connection closed by remote host Even though I've ...
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1answer
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LAMP Setup on CentOS at DigitalOcean

I'm following this tutorial. I got some issues start from step four: Configure Nginx to Process PHP Pages. After I typed this $ sudo vi /etc/nginx/conf.d/default.conf. I can't find server { listen ...
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1answer
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How to find all keyboard shortcuts to a process/program in Linux?

Is there a way to find all keyboard shortcuts for a given process/program in Linux(SuSe)? I have googled tons of stuff,but don't get anything useful. Could someone give me a tip?
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1answer
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Establishing an SSH connection between machines behind firewalls

I have two machines, A and C, each of which is behind a firewall so they can’t accept incoming SSH requests on port 22. I have a third machine, B, outside both firewalls and I wanted to SSH from A to ...
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Use existing encrypted directory as home directory

In the past, I installed Ubuntu 12.04 with /dev/sda4 mounted as /home. I encrypted my home directory. Today, I erased all the partitions except /dev/sda4 and I installed Xubuntu 14.04 on a new ...
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Replace system disk - centos 6.x

I have a Precision 380 running CentOS 6.5 where the (one and only) disk appears to be failing. I'd like to copy out everything to a new drive and have it take over as the system disk so I can ...
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Is it possible to share printer in guest Windows to host Linux?

I'm using Linux in company, and cannot set up printer in Linux, so I installed VirtualBox in Linux, and in VirtualBox I installed Windows, I can print in this Windows. But it is very bother to print ...
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1answer
33 views

Monitor Mode doesn't work in Kali 2.0

For the last year or so I have been using this exact setup with Kali 1.0. Everything worked fine with Wireshark. Now, when I am connected to a Wi-Fi access point my card REFUSES to stay in monitor ...
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16 views

Force media to be mounted to /dev/sr1 instead of /dev/sr0

I would like to be able to have the first device that I mount to a linux host be /dev/sr1 instead of /dev/sr0. I am trying to script installing IBM’s SVC. There installer is hardcoded to expect the ...
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remove pdf stamp that has been added by pdftk

Question: Can you remove a stamp added with pdftk, using Linux command line tools? Motivation for the question: I have tens of thousands of scanned pages, in hundreds of pdf files. I would like to ...
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1answer
18 views

How can I use Pacemaker to setup a virtual IP for receiving syslog messages?

I need to setup a VIP / floating IP that network devices will send their syslog messages to. The idea behind the VIP is to have a highly available setup in an attempt to minimize the amount of logs ...
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Booting Windows and Linux across two physical drives

I'm trying to get Windows 7 and Kali Linux bootable on an old laptop, but there are a few considerations that are making it difficult: 1) Windows 7 is on an SSD, while I installed Kali on the ...
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1answer
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Difference between apache2 and apache2-bin?

My digitalocean server is running Ubuntu 14.04, and I'm trying to install Apache. When I just type in "apache2" to PuTTy, it says: The program 'apache2' is currently not installed. You can install ...
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1answer
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Update Debian8 JRE 1.7 => 1.8

The OpenJDK website reports installation is a simple one line operation. Debian/Ubunutu is specifically referenced in the instructions. http://openjdk.java.net/install/ sudo apt-get install ...
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2answers
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tcpdump not capturing any packets

I'm trying to monitor what's going on in my network, so I've tried tcpdump command. I'm just learning to use it, so I thought on playing around a little bit with it. My problem is that I cannot ...
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Is it possible to setup a NAT loopback on a router with a dynamic IP using iptables?

I've set-up a Raspberry Pi home server attached to my router. I have a dynamic IP. I can access the server within my network using the internal IP (192.168.0.8). I can also access the server outside ...
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1answer
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Debian can't access partition with user, only root can

I have a permission problem - my users can't access to partition. this partition is mounted with debian installer : # /data was on /dev/sdd2 during installation ...
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1answer
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How to use touchpad gestures to scroll back and forth in history on non-Mac OSX devices in Google Chrome?

I prefer the way how Mac OS X allows users to use touchpad gestures to scroll back and forth in the tab history of Google Chrome. Is it possible to use similar touchpad gestures on non-Mac OS X ...
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Translate permissions with as sshfs remote mount?

I have two computers on a network, call these Q and X. I want to mount via sshfs X:/ to Q:/mnt/X. So to do this I use: user@Q $ sudo sshfs root:X/ /mnt/X This successfully mounts it and allows the ...
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2answers
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Resumable Downloads corruption due to ISP redirection

I have a Bsnl bradband connection in India. Whenever I turn on router and open any link the first time, it gets redirected to mail.bsnl.in page. That could be a way of promoting their email service. ...
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Which version of Zorion OS? [on hold]

First, Thanks for your earlier responses. :) Now, I have finally decided to go for Zorion OS on my old PC but I am too amazed by the number of different OSes present underneath the Zorion title. ...
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Set header in CUPS response

I am trying to communicate with a cups server from javascript in the browser but I am running into cross origin policy. Anyone have any wisdom for setting headers in the cups response? I'm using ...
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1answer
23 views

Wipe ChromeOS drive and start net

Is there a way to fully wipe the harddrive for a ChromeOS laptop and do a full install of Linux? I've been playing around with the many different ways for installing linux to a ChromeBook to make it ...
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1answer
26 views

can I run a split ms access database on a linux server?

An ms access database has been split so that the back end of it is on a windows server, while the front end GUI is on each user's windows PC. Is it possible for the back end to run on a Linux server ...
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1answer
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“read” works as expected in ZSH but behaves differently when using any other shell

I’ve written a short while-do cycle but I found it working strange with different shells. That's it: find "`pwd`" -type d | while read -r D; do ls ${D}; done When I start it using zsh, all goes ...
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How can I import my Ubuntu terminal's color scheme for a different computers?

I did a reinstall on my computer presently, and I want to restore my previous terminal settings. While exporting my settings, I ran the command gconftool-2 --dump '/apps/gnome-terminal' > ...
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Linux Mint draining power, VGA errors

I have a Dell laptop, with Core i7 processor, radeon r7 dedicated vga. In windows, everything is fine, battery can hold up to 7 hours (im amazed). In Linux (which i must use for specific jobs) the ...
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1answer
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Bash script to create a folder structure

I'm trying to write a Bash script to automate a recurring task, namely the creation of a structure of folders, where some of them should be numbered (To be more specific, this is meant to archive some ...
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1answer
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Can I delete one of these windows partitions?

I've been googling around trying to figure out if I can remove one or more of my partitions. But couldn't find a answer for my case. It's a pre-built laptop HP Probook 650, It came with Win 8, and now ...