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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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In Fedora 20, $DISPLAY is unset after a kernel update. How can I permanently fix this

I recently updated the kernel (a rebuild that came through the usual update channels, nothing unusual done by me). I think the problem started here, but it might have been a coincidence. After this ...
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Installing Nvidia drivers on Red Hat

I am trying to install Nvidia drivers on Red Hat Why am I getting the following error: rpm -i NVIDIA_kernel-1.0-2880.rh62.i386.rpm error: Failed dependencies: kernel = 2.2.14-5.0 is needed by ...
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1answer
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Linux Filesystem with either no discretionary access control (user/group permissions) or that can have it disabled

Is there a file system for linux that has no permissions? I have a folder that is shared between multiple applications and although they are all running in the same group, I am constantly having ...
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Installing Nvidia drivers on Red Hat

I wanted to install Nvidia drivers. Can you tell me why the following is not working : [root@INEICP-EPM-W134 Downloads]# rpm -Uvh XFree86-4.3.0-35.EL.src.rpm warning: XFree86-4.3.0-35.EL.src.rpm: ...
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Installing packages on multiple centos machines

I have to install standard package like java 1.7 in 40 of my lab machines which are connected over a lan. I know I can simply write a shell script to install something in user space of each system, ...
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Minimize PCR Jitter in mpegts stream

I am using ffmpeg for capturing desktop screen and creating mpegts stream. I am using following command. ffmpeg -y -loglevel warning -f alsa -ac 2 -i pulse -f x11grab -s `xdpyinfo | grep ...
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1answer
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How to distinguish 'syscalls' form 'int 80h' when using ptrace

As syscall number is different in x86 and x64, ptrace can only get syscall number by PTRACE_SYSCALL. So is there any way to figure out where this syscall real origin?
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Postfix 'No route to host' even when port is set to 2525

All I want to be able to do is send email from my ubuntu server, I do not need to receive. Whenever I attempt to send an email to an outside domain such as gmail, the email never resolves and it stays ...
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2answers
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How to kill a continuous process started from rc.local?

I'm working on a Raspberry Pi with Raspbian (Debian-based) OS. For testing I added such a command in /etc/rc.local: python /home/pi/test.py It works fine starting this script. But the problem is ...
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1answer
11 views

server randomly becoming unresponsive

I've been having a sporadic issue that seems to occur completely at random with one of our Ubuntu servers. The server will randomly decide to stop responding to connections on all services (SSH, HTTP, ...
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1answer
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tar reverse of '--to-command', or: compressing tar entries individually, or: tar with plenty of large files

I would like to create tar gzip archive, but do it the reverse manner of what is most commonly done -- have the files in the archive be compressed individually rather than compress the entire archive: ...
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2answers
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Protect certain files from being modified or deleted

I'm trying to expand my knowledge of Linux security and one thing I'm looking for is protecting select directories and files from modification, deletion, or alteration of attributes. I understand that ...
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Booting to liveCD with MacBook Pro 2,2

I am trying to install any modern Linux version on an old MBP 2,2 from about 2006. Previously I had Crunchbang Statler (basically Debian 6 w/Openbox). I am having no luck getting either a liveCD or ...
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Server drives gives input/output error when formatting in Fedora

I am at a total loss as to why this is happening. I have tried everything I can think of. I am trying to format a drive in Fedora to use in the server. Every time I try to format it I get a ...
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0answers
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Php-cgi Server Load high Every Single Visit

I Get Big Big Problem I Am Using Virtual-min in My Dedicated Server My Server Configuration IS Intel Xeon E3-1230 3.20Ghz RAM:8GB Bandwidth:1Gbps I Am Using Varnish And NGINX I See Carefully ...
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25 views

How to create new localhost interface in Windows?

In *unix you can write: sudo ifconfig lo0 127.0.2.1 up But how to do this command line in Windows?
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1answer
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How to apply only security updates on CentOS?

Ive tried what this article describes: yum install yum-security Next step is yum list-security but the result of this is: Loading mirror speeds from cached hostfile * base: mirror.anl.gov * ...
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Robocopy equivalent in Linux that supports Multi-threading

I personally love Robocopy for one major feature. The /MT command to allow multi-threaded connections. Is there an equivalent tool in Linux that provides the same functionality? Its really useful ...
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Linux Debian dual screen graphic card , screen on chipset not detected

I am trying to a dual screen on linux debian. I have one screen on the graphic card (HDMI) and the other one is linked to the chipset (VGA). The dual screen works fine on windows, on linux i tried ...
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0answers
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Window Period Where Sent Packets Cause Socket Acting as Server to Malfunction

I am currently working on an embedded Linux server. My main application is a state-machine that is started during the init phase from the rc-scripts. The application spawns several worker threads. ...
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0answers
20 views

Can software circumvent the light on a laptop's built-in cam or is that isolated somehow?

I don't use my webcam much so I keep it taped over just in case I got a virus or something that could activate it without the light coming on. However, it's ugly and I'd like to take it off so it I ...
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2answers
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Why do I add a path to ~/.bash_profile and source it, but there's no effect?

In my install.sh: # other commands to install java... echo 'export JAVA_HOME="/usr/java/latest"' >> ~/.bash_profile source ~/.bash_profile After this script runs, I type echo $JAVA_HOME, but ...
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0answers
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I want to block the server used as proxy in iptables [on hold]

How to disable socks proxy incoming and outgoing request in Linux ip tables ?.
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1answer
24 views

Where do the variables of a new BASH shell come from?

I am puzzled as about how environment variables work. From what I am aware, for a new process to have some environment variables, its parent must have issued export. But what about all the variables ...
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Where are Iceweasel's configurations (headers) stored?

I would like to write a small script to modify some of the things Iceweasel sends in it's headers. I'm aware there are plugins for this but I would need some custom stuff. At the very least I would ...
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2answers
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how to undo sudoers file

I accidently command the root admin and sudo in sudo visduo file. Now with current user it is not rolling it back because i can't access it any more. File does not get opened with command sudo visudo ...
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1answer
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Why does Ubuntu mount the wrong partition as root?

I am messing around with a problem of Ubuntu mounting a backup of my root partition residing on a different disk as / instead of the real one. I think the problem has been triggered by a clash of ...
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1answer
16 views

Configuring samba on linux so that the network share does not need a login / password

I'm eager to use a raspberry pi as a low-load NAS, and I was reading the guide at: http://www.howtogeek.com/139433/how-to-turn-a-raspberry-pi-into-a-low-power-network-storage-device/ In the tutorial ...
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2answers
25 views

How do I permanently reset the UUID of a partition?

I have just started experiencing problems on my Ubuntu install with a (dd cloned) backup of my boot partition - residing on another drive - "taking over" the root mount when booting. So I have, from ...
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33 views

I accidentally deleted files of root folder

Now my root folder is looking empty.And I lost my shell string (same as: I accidentally deleted my /root folder and now my shell string is different. What gives?) What should I do now ? I created ...
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0answers
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How to forward DHCP broadcast messages between two interfaces using ebtables?

I have two interfaces, WLAN and LAN, on my linux system. How can I "forward" DHCP broadcast messages received on WLAN to LAN using ebtalbes?
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5answers
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Install linux on computer that can't boot from USB, but no CD/DVD available

I have a computer (A) that I want to install linux on. The bios on A does not recognize "booting from USB". I do not have access to a CD or DVD to create a boot disc. I do however have access to other ...
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1answer
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Unknown characters in LXTerm terminal on Arch linux

I am trying to learn node.js using the learnyounode node from http://nodeschool.io on an arch linux machine running LXDE. I am using the bundled LXTerminal to execute it. However, when I run it, see ...
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Unable to find linux-headers-2.6.32-amd64 for installing VirtualBox

I tried to install virtualBox on my Debian Server, but each time I try to start a virtual machine it tells me to do /etc/init.d/vboxdrv setup. Whenever I try to use this command it tells me this: ...
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Why doesn't ruTorrent/rTorrent respect my ratios?

I have set up my ratios such as this on ruTorrent (3.6) and rTorrent (0.9.3) : When I add torrents they stop at the 2.0 ratio as they should. If I want to seed more once it was stopped and assign ...
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How to host multiple php sites on one OpenShift app

How to make different domains point to different sub-directory? For Example: abc.com --> ./php/abc.com/ xyz.com --> ./php/xyz.com/ Can I create virtual hosts on OpenShift's app?
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1answer
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Is PCIe speed compatible with that of PCI

If I go in for a PCIe to PCI adaptor, will I be constrained by speed. PCIe provides a faster interface than PCI. How can I make them speed compatible
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Boot USB Tails through VirtualBox?

So I have Tails 1.2 on my USB (Disk 5) and also on a partition (2) on an external hard drive (Disk 4). The USB shows up as 3.75GB and the partition is 6GB. I want to be able to boot either Disk 4 or ...
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Differences of aufs, unionfs and overlayfs from each other

I have to join two file systems, one read-only (squashfs) and one read-write (ext4). My plan is to mount the read-write filesystem over the read-only flesystem so it appears writable. When I make some ...
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1answer
17 views

Linux : Setting which php bin to use in CLI

Hi i'm trying to use php command in linux. However I have two installations of php, one I got from the sudo-apt-get and one from a stack, Lappstack. Don't ask how I got there, but nevertheless i'm ...
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0answers
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Keyboard and mouse don't work after kexec

While installing Fedora on my MacBook Pro Mid 2012 I've occasionally used kexec command to "boot" from live environment to the installed system. # yum install kexec-tools.x86_64 # mount LABEL=/boot ...
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Linux WBEM client to pull event logs from Windows SCOM Server

I was told by my UNIX team that a wmi/wbem client for Linux called WBEMCLI allows Linux to pull event logs from a windows server given that the right parameters are configured on the linux side. Now ...
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1answer
21 views

Oculus Rift in Linux

Sorry if this isn't the right place for this question. I do realize this is a somewhat experimental piece of hardware. Still, it would be nice to see how much progress can be made here. I'm running ...
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0answers
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can filling up a disk and then freeing up space cause filesystem problems a month later?

I had an incident happen not too long ago with a server running mysql. Someone had enabled slow query logging on the server but never bothered to implement a log rotation, so the log files slowly ...
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1answer
30 views

Configure Locales on Debian

I have a problem to generate the Locales on my server (Debian 7.5 stable (Wheezy) (64bits)). When I run, as a root: dpkg-reconfigure locales And select en_US.UTF-8, I get the following logs: perl: ...
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2answers
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How to check if busybox has a command?

In my case, I want to see if busybox has "md5sum" builtin. I am currently doing this: $ echo | busybox md5sum &>/dev/null && echo yes || echo no I have not been able to find any ...
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0answers
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eclipse: unreadable text in GUI

A number of menus in eclipse have fields where the text is unreadable - either because it is the same color as the background, or its not being rendered, or something. I've looked around the KDE ...
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1answer
17 views

The directory “/tmp” does not have enough space for extraction

[Debian 7.7] Want to install jdeveloper. Moved the file jdev_suite_121300_linux64.bin (1.7Gb) to folder /opt/jdeveloper/. The chmod +x jdev_suite_121300_linux64.bin is applied. Running the ...
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0answers
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grep not matching patterns in scripted session

Asked this question on the Unix board and got slapped for it. Someone said this was the right place so hopefully that's right. We have a bunch of reports that run on a Linux server and I am trying to ...
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0answers
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Allow user via setfacl to chown files

I am using ACL to set specific permissions in a folder: setfacl -R -m u:wordpress:wrx /var/www/html/wp As that user, I am able to create a folder touch test but if i want to change the ownership ...