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 command fails when run with ssh-dss as hostKeyAlgortihm

I am running two commands one after other. I run in the following sequence second command fails with error code 255 First Command: ssh -ladmin -oStrictHostKeyChecking=no \ ...
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Is there a failsafe guide for “ssh -X” usage for both client and server?

I simply can't get SSH properly to run with my server config. Both machines are reachable within the identical NAT and around 15cm distance away, they can both be accessed via TCP/HTTP or other ...
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Linux Mint 17: No 1366x768 Resolution

When I installed Linux Mint 17 for the first time I was facing some freezes and I solved that issue by installing nvidia-304-updates driver. But now my native resolution 1366x768 is not available in ...
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How do I get access to the file system of a stopped AWS instance (virtual machine)?

Issue: I have an AWS t2.micro (virtual machine) instance (name:webserver) set up with Ubuntu 14.04 LTS. The instance is unusable due to a configuration file that I edited improperly and saved. I ...
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How do I determine what programs are running with root privileges?

Is there a way to check via terminal which programs are currently running and by which privileges they run?
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How to downgrade kernel of samsung device SM-T230

I am facing a weird problem. My client reported that our game(which is based on cocos-2dx 2.2.6) displays black screen after focus change on one device namely Samsung Galaxy Tab 4 SM-T230 the Log ...
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Why does ssh wait for all the launched processes to exit?

I am running a script from one machine on another machine using ssh. ssh <host> a.pl Now, a.pl starts several other instances of a.pl using the 'system' method and executing each of them in ...
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Taking control over a ThinClient

http://41j.com/blog/2011/10/hp-t5325-thin-client-hacked-to-full-debian-system/ In reference to that. I've tried spamming CTRL+C with no avail. Are there other ways I could try to take control and ...
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mount point is not a directory

I am trying to mount a directory from a local desktop in my home network. The computer exporting the nfs share is named jarvis and the nfs client is named marvin. On marvin, I run showmount -e jarvis, ...
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Is there a way to change file/folder ownership on a server in Ubuntu/Kali-Linux?

I accidentally changed file ownership of a folder in Windows 7 and now nobody can edit, copy, view, move it, etc. Not even the administrator account account can change it back. I tried icacls and ...
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zero a large block device with parallelized dd

We have a sixty terabyte block device which we want to zero using dd. Is it possible to parallelize this operation in order to reduce the amount of time it takes? I've tried running the following ...
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OpenVPN iptables and security

I want to run OpenVPN at home. I have a virtual instance of Debian 8 on my ESXi 6.0 host with its primary IP as 10.0.0.99. I assigned multiple virtual NICs (server, vpn, management, backup) with the ...
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samba is up and accesible but not showing

I have a very strange problem, I have samba set up and running. I can access it if I use manual access like : smb://myserver however it does not show it on the list under my WORKGROUP. (no Folder ...
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1answer
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Autocompletion on all my programs for Linux

I'm looking for a tool to have an auto-completion feature (glory to zsh!) working on my whole linux system. It could be something similar to the suggestions given by the Android keyboard, but having ...
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1answer
311 views

HDD naming in Linux?

Does Linux attempt to give a drive the same letter each time? For example, if was to connect two drives to my computer, then disconnect them and reconnect them in reverse order would sdb and sdc ...
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Upgrade Linux Mint from ISO on HDD without burning DVD/USB

I have an old computer that I wanted to rescue, so I installed Linux Mint 10 onto it using a Live CD. Now, LM10 is obsolete, so I'm wondering if I can upgrade the distro using the ISO file of LM17. ...
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Binutils compilation error, makeinfo missing

I am compiling binutils from source on my amd64 computer. I got the following message: WARNING: makeinfo is missing on your system. You should only need it if you modified a '.texi' or '.texinfo' ...
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16 views

ssh proxy command with netcat

In example like this: Host destination ProxyCommand ssh gateway nc %h %p Is the connection between the gateway and the destination encrypted? I am confused because I have 2 hypotheses and both ...
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24 views

Copy (almost) entire filesystem with minimal effort

A couple months ago I switched from VPS to dedicated server, however all this time I haven't found the time to actually go through all the files I might need again, copy them and shut down the VPS. ...
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1answer
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Dual display through X11 protocol

I have a question: I'm working on a computer that has no secondary display output, but another computer in the network has one. Is this possible to extend the second monitor through X11 with the ...
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2answers
24 views

How to update git on RHEL without access to root?

I am trying to get my IDE set up at work for a project I am working on. I am coding in python and working in PyCharm because of its awesome git support. However, whenever I try to configure git on ...
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Continuously check status of OpenVPN connection

I'm trying to check and display the status (connected/not connected) and the server's hostname/cn of an OpenVPN connection that should connect at every boot. Now I've found out that in ...
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linux app runs only in terminal, not from desktop icon

I have a linux app that runs perfectly from the commandline, but when I launch it from its desktop icon, the system cursor goes into a long wait state, then nothing. The icon app.desktop file gives ...
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What is required to make sure no plaintext password is on the wire between an Apache web server and an ActiveDirectory server for LDAP authentication?

At my work, I have a rather stubborn IT person who is extremely against adding services to our central SBS installation (which means no SVN, no internal web server, etc.) As a compromise, I convinced ...
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Harddisk not mounting: not recognized under Devices - Ubuntu

I am using Ubuntu 14.04 desktop computer. According to my code I mounted my harddrive and then copy a file in it. I also use 2 USB for this copy operation. Today I got into trouble. Firstly one of ...
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bash - processing output one line at a time

I read that xargs was good for processing the output of a command one line at a time (and it is). I have the following line in my script. ./gen-data | awk '{printf $2 " "; printf $1=$2=$3=""; gsub (" ...
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What is the best way to create a local development environment in a linux machine without being in sudoers

I use a workstation for my development but it does not include all the libraries for my case. I like to install them for my use without any system wide effect. How should I proceed this is a linux ...
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CBL is blocking my IP and I have no IDEA how to fix. Urgent please help :( [on hold]

I am new to stack overflow so sorry if I do not get this quite right. I noticed my mail.log was 4gb in size so I opened it up and it has 12 million lines similar or the same as this: Jul 19 06:53:04 ...
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1answer
29 views

SSH still prompting for password with authorized_keys

I'm trying to log into a server with a different user. The user's name on the server is gitquery. I used ssh-keygen to create these files locally: /opt/gitquery/gitquery-rsa ...
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Need help formatting drives for dual booting Windows with Antergos

Okay, so I'm planning on dual booting already installed Windows 7 with Antergos. I currently have 4 active Primary NTFS drives set up. I will be formatting one of those into ext4 in order to use that ...
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Mac Address configuration in DHCP Server Ubuntu 14.04 LTS

I have configured the DHCP 3 server on Ubuntu 14.04 LTS and releasing the IP Address on all device. Now I want to register the mac address to only 150 device not for all and I don't want to put the ...
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How to dump .data section of PE files?

So, I was able to disassemble with Linux's objdump, and I was able to extract the .data, but I was unable to interpret it effectively. Is there a way to dump it in a more readable format, similar to ...
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Customizing Ubuntu Server Startup Message

I have an Ubuntu server (15.04) that I am using for testing in a group. Is there a way I can customize the startup message (probably not the correct terminology) to include the IP address. So ...
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18 views

passthrough graphics card to virtualbox

So I'm trying to get my laptops NVIDIA fx 880m to pass to a virtual box running window seven on a linux mint 17 install. So far everything seems to be (maybe) heading in the right direction: the ...
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Remap Super_R to control (Fedora 22)

I have verified that keycode 134 (0x86) is my Super_R key on my keyboard. But I would like to remap this to control. However, I've tried nearly every permutation. What am I doing wrong? ...
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I need to calculate time of booting RPI using Watchdog? Can any one help me please

The boot sequence of the Raspberry Pi is basically this: Stage 1 boot is in the on-chip ROM. Loads Stage 2 in the L2 cache Stage 2 is bootcode.bin. Enables SDRAM and loads Stage 3 Stage 3 is ...
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Equivalent of Linux /boot directory in an Mac OS?

In linux /boot, we have the Linux kernel and boot loader files. I wonder whether there is an equivalent of Linux /boot directory in an Mac OS?
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Invalid command 'SSLOpenSSLConfCmd', perhaps misspelled or defined by a module not included in the server configuration

Everyone know what issue it this ?what i miss? This is my Http.conf SSLProtocol All -SSLv2 -SSLv3 SSLCipherSuite ...
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How to execute command on host machine in Virtualbox

My guest machine is Ubuntu 14.04 and my host machine is Windows 8.1. I need to execute a command coming from Linuxmachine on Windows. What is the best idea to do that? If my host was also Linux, I ...
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How to change the current TCP timestamp value for Linux?

Linux normally sends a TSval field that corresponds to the current uptime. I would like to overwrite this with a user-specified value. # 4 hours after boot: > outgoing TCP packets have TSval ...
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FatRat - How to add FTP credentials?

I am wondering, how to add FTP credentials to FatRat? You have to insert an regular expression, but how exactly does it have to look like? Anyone has an example of an regular expression? For example ...
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Which new version of Fedora to use with Amahi?

I recently came across Amahi and tought I found an use for an old computer I have. However, When I read the documentation for the 32bit systems, says I need to have Fedora 19. but then on the website ...
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Can't Connect to External Monitor on RHEL6

I have rhel6 installed. I am using a W530 lenovo laptop. I am trying to connect to Lenovo LED monitor using VGA cable. I think I have the Nvidia driver installed but I when I plug in my VGA cable the ...
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1answer
40 views

How to read ls -l permissions

I've been trying to understand Linux permissions. I know that I could download one file via CyberDuck from a remote Linux machine and the other one I was not able to. Here is the output of ls -l: ...
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24 views

My wireless interface can't see access point

I'm trying to learn how to manage wireless with my Ubuntu and so what I want to do is to enable my wireless from command line. What I have done is this: sudo ifconfig wlan0 up sudo iwlist wlan0 ...
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How to determine what type of wifi networks are supported by your driver on Linux

On Linux (specificially Ubuntu) what's the easiest way to determine what types of Wifi protocols your hardware and driver support? I have a router running DD-WRT that supports broadcasting in both a ...
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Strange “Last Login” ip SSH

I was told to post this here instaed of StackOverflow so here it goes: 2 weeks ago I accessed my server via SSH and noticed that PuTTY displayed an "Last Login" IP from India. Today I accessed the ...
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Custom script in /etc/rc.local - not starting X properly

I made a script called starter.sh: #!/bin/bash while true; do sudo fluxbox & sudo -u pi epiphany-browser -a --profile ~/.config http://localhost/index.php & sleep 2s done; Which is ...
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gradual gamma correction to correct viewing angle instability

I have an Thinkpad e540 laptop whose display is very susceptible to the vertical angle at which you look at it. I have found out that the color distortion which happens at the top and at the bottom of ...
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1answer
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String replacement using sed [on hold]

Searching and replacing a string in a file. Input file name - Input.txt DATETIMEOFFSET(20) datetimeoffset(99) DatetimeOffset(10) lots of data1 lots of data2 datetimeoffset(45) Output File name - ...