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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Asciio on Ubuntu, can't find export as .txt

I just downloaded Asciio to my workstation running Ubuntu 14.04. I created a pretty complex piece of ascii code in order to put as part of the documentation inside my code. I can save files and open ...
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Can not bypass mac address filtering

I add a white list filter by mistake to my wifi modem router, so I want to change mac address to that IP. I run this command: ifconfig wlan0 down ifconfig wlan0 hw ether xx:xx:xx:xx:xx:xx ifconfig ...
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Shell cript for getting video fps

So, i'm trying using ffmpeg to get the fps of a video and save the value as a variable using this vid_fps=$(ffmpeg -i "$vid_file" 2>&1 | sed -n "s/.*, \(.*\) fp.*/\1/p") echo "$vid_fps" but ...
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1answer
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connecting to host running ssh2 server using ssh client

I am trying to connect to a linux host( target_host) running sshd2 using a ssh client( client_host) ;While doing so I converted the pub key of client_host as ssh-keygen -e -f id_rsa.pub > ...
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What is the difference between monitoring only one host and cloud?

With the cloud computingtechnology is used very extensively, I am very curious about what is is the difference between monitoring only one host and cloud. For example, I can use top or ps command in ...
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How can I put my CentOS on public IP so that I can access it WinSCP from home?

I have a centOS system at office and I want to access it from home via WinSCP. I have a static public IP at office. Please help!
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1answer
13 views

How do I export a lxc container?

Is it possible to export a lxc container to another machine? There are some tools like lxc-snap and lxc-clone will those help in exporting to another system? Can I copy paste the rootfs folder or is ...
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1answer
30 views

How to use a SmartTV as second screen over wifi?

If we would like to use a SmartTV as a second screen over wifi using Linux, how could we do it? Is there a way to do this? For my case I'm using a Samsung SmartTV and Ubuntu 14.04 LTS with KDE 4. ...
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Removing nVidia driver from Fedora causes references to missing file nvidia-tls

I had installed the nVidia driver from rpmfusion-nonfree and it has been working fine for a long time(From fedora 18 I think). But now I wanted to switch to the opensource driver, so I removed the ...
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14 views

Debian server management GUI

I have to manage a number of Debian servers (one as the KVM host, and the others as virtual servers for File management, Infrastructure management - DNS, DHCP etc, and finally a Debian based ...
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Kali linux empty desktop

OK so after a long time struggling with the booting problem, I finally started the Linux. But the Desktop is empty. I don't see the bar at the top (Application Places terminal bar). I can only see ...
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1answer
15 views

java -version not working in linux

I have untar the jdk on my Linux machine and I have set the environment variables ie ~/.bash_profile however if i give java -version on terminal I receive the below error. bash: ...
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2answers
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Clone Drive Using Linux DD Command: Send IMG Over SSH Connection

I SSH to a VPN running Ubuntu Linux. To make backup copies of the hard drive, I use the following dd command: sudo dd if=/dev/sda1 of=/home/rick/hdImage-20150704.img It works, however, is there a ...
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“sudo dpkg-reconfigure keyboard-configuration” settings forgotten after reboot

I'm currently running on an Ubuntu 15.04 machine, and I've been attempting to set my Left Caps Lock Key as my Control Key. After following numerous ways of doing this, I've attempted the above ...
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2answers
30 views

Shell script to pass multiple arguments with options in command line

I have the script, I need to execute this script like this: ./create_endpoint.sh --controller-ip 10.20.20.1 --controller-name User1. But its executing like this: ./create_endpoint.sh 10.20.20.1 ...
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1answer
5 views

Grub2 on msdos table partition won't load

my laptop has: 500gb hdd /dev/sda 22gb sdd /dev/sdb I used to boot archlinux from a small ext2 partition on /dev/sda. The bios is set to use BIOS mode (not uefi), secure boot is disabled, AHCI is ...
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25 views

accessing outside my network through a server

I have: A user-machine (embedded device where I can't log in to console or ssh) , that doesn't have access to lan 192.168.5.x B a server debian that sees the A's network , but is in 192.168.1.x ...
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Create partitions using fdisk/gdisk using linux

I am trying to Install Xubuntu alongside Windows 8. I have two Windows part C: and D: . I want to install Xubuntu in between them, so I shrunk C: (using windows Disk management) and created ...
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1answer
26 views

Getting controller to work on second x-server

I am using Linux Mint 17 with Cinnamon as my primary WM. I want to run Steam in a separate x-server for better fullscreen performance and because unredirect doesn't work properly in Cinnamon and ...
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12 views

Supermicro server with 2 PSU and 24x1TB [on hold]

we have several superciro servers, had 2 PSU and 24x1T SAS disk, when shut 1 PSU and always had serveral HDD failure. Any idea to how to find out the really problem? Thanks
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How would I configure a dedicated server only to be accessible via vpn

I have a server inside my lan. It runs owncloud and some applications for development purposes: docker, wildfly, tomcat, samba ... My workflow: I use a openvpn appliance to get inside my lan and then ...
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How can I find why a port is used in Ubuntu Server? [duplicate]

I recently installed Kamailio 4.0.4 on Ubuntu Server 14.04. After first run. 0(5400) ERROR: <core> [tcp_main.c:2932]: tcp_init(): ERROR: tcp_init: bind(a, 0x7fb5b0783344, 16) on 127.0.0.1:5060 ...
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Boot fully encrypted Windows 8+ with GRUB without password using keyfile

I have a current setup so that my entire linux (including /boot) is encrypted and when I first start grub a password is needed to access /boot from my linux partition. But my entire windows partition ...
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2answers
35 views

Curl post form and get result

I found this website http://www.fonefinder.net/findome.php , that locates phone provider by number (ex: http://www.fonefinder.net/findome.php?npa=562&nxx=866&thoublock=1666) shows VERIZON ...
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How to get total records affected in database: A shell script

I have written a shell script to update the records on database server. The query.sql file contains variable number(almost 600 to 800)of insert queries. As I am running the script, it runs fine and ...
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linux crash graphics go crazy

Frequently at boot my computer does this. It is extremely frustrating as I have to restart it many times till it works normally. Any ideas are greatly appreciated. system specifications ubuntu ...
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need to recover data from bcache device

I have had some problems with a bcache device, that ended up in: bcache-super-show /dev/bcache0: sb.magic bad magic invalid superblock(bad magic) I need to save the data that was on that device, I ...
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1answer
27 views

Why an OS has same name on different achitectures?

What is the similarity in running a same OS (like Linux) on different architectures? I mean, we cannot run Linux x86 apps on Linux ARM. And even the OS itself is constructed differently for different ...
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12 views

Wifi hotspot, what's wrong with this redirection structure/code?

My linux machine provides a Wifi access point (made with hostapd package). Interface wlan0 is thus accessible by machines around. When clients webbrowses my machine, I would like any IP/url to be ...
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3answers
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How to make a local tar file of a remote directory

This link describes how to copy tarred files to minimise the amount of date sent over the network. I am trying to do something slightly different. I have a number of remote files on different ...
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1answer
10 views

I am trying to run a cronjob but it is not executing correctly

I have the following line in my crontab */1 * * * * /usr/bin/screen -S lftp /bin/bash /media/c419d280-9833-4432-b5a5-520f040b87ec/NASDataDisk1/Other/autolftp-sftp.sh >> ...
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The conflict spread: http://archive.ualinux.com maya Release (expected maya, but received precise) [on hold]

The conflict spread: The conflict spread: http://archive.ualinux.com maya Release (expected maya, but received precise) broccoli@K53SV ~ $ ls 123.txt Playlist.pls ...
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1answer
14 views

What is MASQUERADE made for?

A simple redirection is used on my server, with iptables rules : $ iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 13.37.42.1:80 $ iptables -t nat -A POSTROUTING -j ...
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1answer
24 views

Keeping data separate from OS

Is there a simple way to configure windows/linux/mac so that the OS is installed on a separate HDD/SSD to all the user data which is stored on one or more drives?My motivations are: Quick and easy ...
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How do I set systemwide connection over a proxy server

My Internet access is through a proxy, my OS is Debian 8, each application must configure it to use the proxy, but there are some that are a headache to make it work with a proxy, then my question is: ...
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1answer
24 views

Is mounting a filesystem as read-only enough to prevent FS/data corruption in case of power loss?

I have a home-made HTPC setup. I often plug and unplug USB drives on it. I was wondering whether just unplugging these drives without umounting them first would be alright considering that they are ...
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Unresolvable broken dependencies, none of 'apt-get' commands works

Before I explain the problem, I should say that I have tried all other answers to similar questions and troubleshootings around the Internet, and none of them works. To be more specific all apt-get ...
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14 views

Wi-Fi signal strength in OpenWRT

Is there a way to retrieve signal strengths on all the devices connected in a wireless network in OpenWRT? I want to check signal strength of devices connected to the router. My router has OpenWRT ...
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24 views

Fast disk encryption on Raspberry Pi

I need to have a trivially encrypted disk on my Raspberry-based server. As far as I know, Raspberry Pi doesn't have any hardware AES encryption. That means, the standard disk encryptions are awfully ...
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10 views

Logging signal strength in router logs

how to know the client(device) signal strength that connected to WiFi in OpenWrt platform? Is it possible to to log signal strength of devices connected to Wi-Fi access point? Actually not even just ...
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18 views

Group permission doesn't work for group

I'm trying to give me permissions to write on a file owned by www-data me@home $ touch my_tralala && chmod 660 my_tralala me@home $ sudo chown www-data:www-data my_tralala me@home $ groups me ...
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2answers
38 views

ipTables, how to block all services requests on port 80 for an IP?

On a linux server/router, I want to block port 80 only for one IP (example : 1.2.3.4 ) I have been given this example : ### Block Incoming Port Requests (BLOCK PORT) # To block port 80 only for an ip ...
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1answer
17 views

How to chroot with sshd in a directory not owned by root?

I followed this, to restrict user to a determinate directory and it works perfectly, but i need to chroot a user in a directory that is /dir1/dir2/dir3/dir4 Suppose dir1 is owned by root, dir2 by ...
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Pycharm on Linux: Scrolling has become suddenly very sluggish

I've a Linux machine with 4gb of RAM and 2 VCPUs on VirtualBox running on a Windows 7 host (Core i7 with 16 gigs of RAM). The Linux VM is my workspace for a project. I run Mobaxterm on my Windows ...
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33 views

cannot connect with Remote desktop in windows 8.1 using RDP file

I am having difficultie connecting to a remote computer using my dell notebook with windows 8.1 I have connected to this computer many times before using Linux (Remmina and/or KRDC) without any ...
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21 views

Is there a way to install Arch Linux on a separate drive via Windows?

I want to install Arch Linux on a new SSD I've bought however I don't have any discs or external drives to install it from. Is it possible to install Arch Linux via Windows 7 which is running on a ...
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1answer
15 views

why doesn't strace work on gcc -c

>echo > foobar.c >strace gcc -c foobar.c 2>&1 | grep foobar.o > (nothing) - foobar.o is being written obviously, but I don't see it on strace. Why?
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ubuntu 14.04 cannot “apt-get update” ok

I am running ubuntu 14.04. Recently I am not able to update the apt source. When I typed "sudo apt-get update", the process is very very slow, in hours that not proceed. And the result is all "Ign" or ...
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1answer
36 views

Why have a single partition on an external hard drive?

I have several external hard drives that I've formatted (in ext4) without creating a partition table and a partition first. I formatted the raw block devices, and they work fine. I only want one ...
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1answer
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Unable to view contents of directory on Linux server via FTP, or using “dir” via shell, able to find files within directory nonetheless

I have a directory on my Linux (CentOS) server which serves as a repository for uploaded files from a webpage. I noticed I was not able to open the file using Filezilla via FTP (was formerly able ...