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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“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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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
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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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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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1answer
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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
14 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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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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2answers
38 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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1answer
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Who can explain what “cat <> temp.txt” means in BASH?

Today I encountered an example of IO redirection in BASH which can be seen as follows: $ cat temp.txt Content of temp.txt $ cat <> temp.txt Content of temp.txt $ cat temp.txt Content of ...
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1answer
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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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7 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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4 views

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
25 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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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
25 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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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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13 views

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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1answer
36 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
39 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 ...
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21 views

Use USB numeric keypad with phone-like typing?

I have USB numeric keypad like this: I need to write chars (A to Z) on this keyboard, and so my idea is to use it like on old cell phone: If I press 1x 2 it writes A, 2x 2 - B, 4x 9 - Z, etc. ...
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1answer
4 views

shellinabox - How can I restrict access to certain users only?

I've got a Ubuntu 14.04 machine which I've set up with shellinabox. Now I would like to restrict access to it to only a certain user account. Nobody else should be able to log in. I've tried adding ...
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beagleboard-xm angstrom image not booting

i will explain all the things which i have done ... First of all i have downloaded an Angstrom image from http://narcissus.angstrom-distribution.org/ then follow all the procedures from this site ...
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1answer
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wget index.php redirection - The name is too long

I am trying to get a copy of the catalog. I would love to get the "List View" and "Show Object" details. The URL I am tring to wget is: ...
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How can i run a command or script after Clonezilla restores?

I have a custom Clonezilla USB drive that restores an image off a samba share, completely unattended. The trouble is, the machines I'm reimaging are headless, so I need a way to know when the restore ...
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1answer
13 views

Terminal that supports select-to-copy right click to paste

I wish to have select-to-copy and right click to paste in a terminal. Gnome terminal doesn't support this out of the box I think so I guess I am going to have to find a different terminal. Everything ...
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1answer
19 views

Configure GRUB for dual boot

I've been trying to get this sorted for 2 days now and just now found the root of the problem. But being new to linux, I'm not sure how to proceed. I have 3 physical drives, sda is for Windows 7 only. ...
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4answers
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Is there a way to tell cron to trigger a particular cron job right now?

The cron job for updatedb didn't run because the system was powered off at the time. I'd like to tell cron to run that job now, as if now were the schedule time. Is there a way to do that? For this ...
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SSH reverse proxy

I am setting up a Gitlab server (https://about.gitlab.com/) inside a virtual machine using KVM on a Ubuntu 14.04 host. My university charges us for every external IP address, so I cannot use bridged ...
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3answers
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Grub rescue, unable to boot windows

I have windows vista and backtrack Linux installed on my dell PC. I wanted to uninstall backtrack so I delect the partition, but when I try to boot widows again, the grub rescue> shown up. I can't ...
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Ubuntu insert key not working in applications under GNOME

My insert key seems to have stopped working, in all applications (vim, gedit, etc.). However, if I change from Gnome flashback to TTY#1, i.e., non-graphical mode, the insert key works just fine. I ...
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can't boot windows 8 need hel on grub-repair

After installation my grub is a complete mess. Now I've got 5 options. First two options for linux and the rest are various supposed windows 8 choices. What can I do? I need desperately to log into ...
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4 views

Squid: ACL based on date

Is their any ACL element in squid to restrict, based on a particular date or giving access based on date? I have checked the time ACL element, and its not possible to give any date, only time of day ...
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2answers
21 views

Choose which binary is default binary on Mac OS X Mavericks

I have installed the latest SVN 1.8 via homebrew on my Mac. However now If I run svn --version I get back that I have 1.7. Next thinng I run which -a svn which then shows me I have it twice: ...
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Limit the size of tmpdir

I need to limit the disk usage of MySQL tmpdir so it does not "eat" all available disk space. There are around 30G available but i have seen mysqld using all of it to create a temp table. My first ...
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2answers
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Linux whereis command still returns a result after uninstall…?

OK, hopefully this is a quick one but I can't seem to locate the answer. After I uninstall a program, the whereis command still returns a reference. For example. Let's say I had ssmtp installed but ...
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1answer
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Dual boot (Windows 8 + Linux Mint 17) UEFI system boot windows only

I have been working on a dual boot system with windows 8 preinstalled and linux mint 17 for a month or so. After applying an update in linux grub loader does not appear and system only boots windows. ...
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Add android-like governors to any Linux on PC

I was looking for a better way to get the most of a laptop on Ubuntu or any Linux distro. In Android rooted phones, we can add CPU governors to the kernel in order to have "smart governors" taking ...
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how to delete yum and right re-install to centos6.5?

[root@webdev docs]# yum list Gathering header information file(s) from server(s) Server: Red Hat Linux 6 - x86_64 - Base retrygrab() failed for: ...
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1answer
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wget doesnt create index file of directory

I try to download site with command: wget -r -l 0 -p -k -m -e robots=off --restrict-file-names=nocontrol,unix http://site.com When it finds link, for example, http://site.com/direction, it creates ...
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What is a ZFS legacy mount point?

I am trying to understand the way ZFS works when I do for example, a snapshot. When I use zfs list on machine I get some mount points and some paths. For example I get something like that: ...
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iBus cannot be activated with non-KDE window

I am using KDE4, and iBus as my input framework. It worked fine. I don't know since when, the iBus can only be activated with KWin windows, like the terminal, KWriter; but for other types of windows, ...