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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Vim go to link in Firefox

Is it possible to have a list of links in vim (seperated by newlines) and then use firefox to open these links? I would have to externally call FF, but how would I pass what is under the vim cursor ...
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OpenGL is not using Direct Rendering

I have a Chromebook with Debian installed using Crouton. I've installed Steam, and I'm trying to get through all the dependencies and errors associated with such a hacky setup. My latest error that ...
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Excuting Java processes on a remote Windows machine when Developing on Linux

My main development environment is in Linux. However, my execution environment for my application is on Windows. The language of choice is Java. Is there anyway to setup IntelliJ to invoke the java ...
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I am looking for some free alternative to sharepoint [on hold]

I am used to sharepoint, as I managed it for a few years for a around 200 people. But now I am working for a very small company, less then 7 people. They don't want to use office 365 or Google docs. ...
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How does the bash interpreter work from the hardware up?

Recently, I came across a question asking how the bash prompt/linux kernel/etc works from the hardware level (CPU interrupt up). Precisely, what exactly happens after you type a command into bash and ...
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2answers
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What does mounting a drive on the /home directory do?

I am running a Rocks Cluster version of CentOS 6.5 and have two internal hard drives installed. When I installed the Rocks OS onto my machine it only made use of one of my two 250GB drives. I have ...
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0answers
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Emulating WinKey+ArrowKey Functionality from win7 to linux

I much prefer Linux over windows but one thing I've always found win7 to be better at was managing and moving windows to different parts of the screen. I'm wondering if anyone knows how I can ...
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2answers
29 views

How to prevent hacked emails from sending out spam

I am new to this whole server admin thing ... I work for a small company, in which I am the web developer & server admin (a job I was thrown into). Please note, before taking this job I did not ...
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4answers
216 views

How to use “date” to print tomorrow's day of the week

On CentOS 6 Linux I use date +%a in several cronjobs and scripts to generate logfile names like myprog-Tue.txt and this works well for me since many years. But now for one program I need to delete ...
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12 views

password md5 equivalent in grub2

In the old version of grub, we can prevent the user modifying the boot option in menu.lst with the following line: menu.lst password --md5 <password> In grub2, I tried to add the following ...
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8 views

How to concatenate MP4 files without losing embedded subtitle or audio tracks?

I have two MP4 files (mediainfo below), one is a short intro scene, and the other is the primary feature. Now, the primary video contains several audio tracks and embedded subtitles. I want to simply ...
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1answer
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How do I find out the duplex mode / speed of an ethernet interface under Linux?

I want to find out the duplex mode / speed of an etherenet interface or a bridge interface. And I want to change them also. I can not use tools like ethtool or mii because my system does not have a ...
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22 views

What percentage of RAM can I allocate as heap

I have 32 GB RAM on host, where I need to run java program ( On JRE 1.7 64 Bit). Currently I have specified 8 GB as heap memory. I am wondering how much can I increase ? I just run the java webapp on ...
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2answers
22 views

/dev/random but predictable?

if i want to do a quick test of some flash memory that i'm not sure is working correctly, the convenient ways to write data to it are either /dev/random, /dev/zero but dev/random i have no idea what ...
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16 views

How to bypass problems when trying to spoof a webcam in Linux

I am wanting to spoof my webcam, so I can eventually insert the method in to a pen-testing book that I am writing. This could possibly lead me into to building a program that is better than ...
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2answers
36 views

Hard drive spinning down/up while playing music

I'm playing music from my hard drive and at routine intervals it stops playback and waits for my drive to spin up again (takes about 2-5 seconds). Is there a way to fix or avoid this? It's a Buffalo ...
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0answers
41 views

What does “<>” exactly mean in “echo <> temp.txt”? [duplicate]

Non existing file $ ls file_not_exists.txt ls: cannot access file_not_exists.txt: No such file or directory $ echo <> file_not_exists.txt $ ls file_not_exists.txt file_not_exists.txt $ cat ...
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3answers
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How to batch compress images with Imagemagick or similar command or program in Linux

I recently learned about the convert command from imagemagick which I have used to compress many pictures that I have for personal use, and for a blog that I have. In my experience, Imagemagick is the ...
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School Bell with Digium Switchvox

Wondering if anyone has a script or suggestion on how to setup a School Bell with VoiP phones. Basically I'd like to setup a schedule to call every phone in a group, switch to speaker, and play a ...
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2answers
54 views

How to rm -rf a directory that's “hard to kill”?

I want to sudo rm -rf a directory, it was a chrooted jail. I already did everything I know of: umount everything in there netns -k the directory ps amx kill everything involving the directory ...
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13 views

Linux Mint - local access but no internet

I am able to see the windows computers on my network and access the shared folders on them. I can no longer remote into my OpenVPN and cannot access the internet. For about the first 30 seconds after ...
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1answer
17 views

“Always-on” video chat?

I would like to set up an "always-on" video chat between two locations displayed on a TV. The hosts that will do the work will be running Linux. Skype is too low quality and runs poorly on Linux. ...
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8 views

Could I use a raspberry pi as a wifi access point with Sophos UTM for uplink balancing?

I have a router box that's running Sophos UTM (which has an option for uplink balancing). I've already got a wired connection to my ISP, but also have a wireless connection to a different ISP that I'm ...
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2answers
40 views

what can be the reason for no permission even using root or sudo

When root or using sudo, I cannot write to some files. I have a file fileA with permissions 750 fileA rwxr_x___ root root When I run a program as root or using sudo, the system prompt is: no ...
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1answer
69 views

Errors were encountered while processing fuse

I was updating my system (Debian Sid x64) using apt-get, but I got the following error: Setting up fuse (2.9.3-14) ... dpkg: error processing package fuse (--configure): subprocess installed ...
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Rsync doesn't allow me copy files into mounted filesystems

I configured rsyncd.conf for public access in my rpi: log file = /var/log/rsyncd.log timeout = 600 max connections = 20 uid = nobody gid = nogroup read only = yes list = yes [public] path = ...
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2answers
21 views

tee causing bash scripts to hang

I have a script that calls a number of other install scripts ./script1.sh 2>&1 | tee script1.log<br> ./script2.sh 2>&1 | tee script2.log<br> ./script3.sh 2>&1 | tee ...
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How to manualy spawn a client in a specific tag in Awesome?

I already have automatic tag assignation for clients using rules, but sometimes I need to spawn a client in a specific tag. For example, I usualy want my browser (dwb) in tag 2 using the following ...
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1answer
18 views

screen - reattach last session

Is there a way of getting screen to directly reattach to the last used session if there are multiple sessions available? I always have at least one screen session running on my server, and always ...
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5 views

Wireless Network card Disconnection while running 4+ VirtualBox instances(bridged)

I am running several VMs with VirtualBox using Vagrant to configure and control my test env. Host box is Linux Ubuntu 14.04. I am using a WiFi connection to a Cisco WAP321 and I have the VM boxes ...
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1answer
8 views

Can’t ping gateway on a Tomato OpenVPN server setup

I have some problem configuring an Open VPN server from a tomato firmware (v1.28.9054 MIPSR2-beta K26 USB vpn3.6) on a WNR3500L router. I’ve setup the server like that : And, when connecting ...
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1answer
43 views

Preventing a Linux user from executing anything non-approved

For some user 'bob' in Linux is it possible to restrict the stuff executable by 'bob' to specific paths only. As an example suppose that the 'bob' has the home directory /home/bob 'bob' must not be ...
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2answers
82 views

What does “<>” exactly mean in “echo <> temp.txt”?

Non existing file $ ls file_not_exists.txt ls: cannot access file_not_exists.txt: No such file or directory $ echo <> file_not_exists.txt $ ls file_not_exists.txt file_not_exists.txt $ cat ...
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1answer
19 views

Is it possible to disable chmod/chown from sudoers for these specific directories /usr and /etc?

There has been two occasions where I have accidentally chmod-ized 777 the whole direcotry of /etc and it has forced me to come to the decision that I'd be better off to do fresh installation of OS ...
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8 views

Remote Broadcast web radio setup

I have a web radio and need to learn how to setup the web radio to have someone else broadcast remotely weekly but I do not know how to set this up. I have zara radio with shoutcast. If someone ...
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Enable multiverse via script on Ubuntu

I am writing a script which needs to enable multiverse in /etc/apt/sources.list for ubuntu. The script will be run on vps where the multiverse is not present. The script will be run on debian and ...
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2answers
30 views

How to run installed ubuntu inside of installed windows

I have installed Ubuntu 14.04/Windows 8.1. I want to play couple rounds of some game in between tasks which I develop in Ubuntu. Games are running on windows, so each time I need to reboot, but it ...
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1answer
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Hardwired ethernet connection not coming up on Ubuntu 12.0.4

I have a Toshiba Satellite P870 laptop in which the wireless connection is working but the eth0 is not showing up on networking. It does however show up in lspci: Notice the second to last entry: ...
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24 views

2 port 10Gbe NIC Performance half of expected

I'm having trouble getting my expected throughput of a Intel dual port 82599EB 10-Gigabit. I've tried many things and want to know if there's anything I could try that I've missed. My hardware ...
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1answer
27 views

how to create a server for remote desktop access

I'm using linux elementary and I'm trying to create a server that i will be able to access via wifi that my android phone will be able to connect to for remote desktop access. in short i need to be ...
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1answer
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Xmonad refuses to recompile

Recently I've installed Xmonad on mint. It works nicely. Then I create an ".xmonad" directory within my home, and a "xmonad.hs" within that ( ~/.xmonad/xmonad.hs ). I use the basic example on the ...
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1answer
22 views

What could cause ext4 partition label to change?

I have a Rosewill RX-358 U3C external HD enclosure which I boot from on different machines. I had a Seagate Barracuda ST31000524AS 1TB 7200 drive in there until yesterday, when I started getting fs ...
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Can user-mode Linux be compiled and run on UNIX systems?

e.g. on NetBSD or Solaris? Or does it require exclusively Linux-specific system calls, virtual filesystems, etc.? Also, if it's currently limited to Linux, what changes would be required to port it ...
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How to monitor free space and automatically delete oldest files on Linux?

I have a software application that continually writes files to disk at high speed. Each file is modest in size (less than 10 MB or so), but they are created every 1-2 seconds underneath a specified ...
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Shell Script basics for validating user credentials

Shell script that validates username and password. Checks the values if the data does not match.it should alert and again prompt for correct username and password instead of coming out to the terminal ...
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42 views

Detect which songs in folder have a siren sound

I'm listening to music while studying, and I want to avoid any songs that have any form of siren sound. Is there any application or CLI command which will recursively examine a folder of .mp3 files ...
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Error on ubuntu server testing - “fio: first direct IO errored.”

I'm working on a VM to test caching algorithms. The tool I've chosen to push IO is fio (click for HOWTO) given its flexibility. What I don't understand is why running on this ubuntu server 14.04 image ...
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Deny external access to services on a Linux server when no ssh session has been established

I am trying to configure my Debian based VPS to only allow access to certain services (ports) from a given IP when there is an established ssh session originating from this IP. Is there an easy way of ...
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Booting a second, encrypted Debian installation from Ubuntu grub command line

I have a stable dual boot between Ubuntu 14.04 and Windows 8.1. I am installing a second flavor of Debian. It has three separate partitions: / is an encrypted luks volume located at (hd1,gpt9), /home ...
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1answer
42 views

Remove two dots back from end of line

I need to use regex to remove all text starting at the end of line and going back two dots. gtk2-2.24.22-2.fc20.x86_64 becomes gtk2-2.24.22-2 This is the output from rpm -qa to a text file, and ...