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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Make all changes by a user reversible on linux

Is it possible to safe all changes a user does in his home directory? The idea is to be able to recover a home directory if a file is deleted or overwritten. My problem is having an old family member ...
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3answers
162 views

Keyboard no longer works when entering BIOS

I am trying to boot from USB so I can install a couple different Linux distros. I can enter the BIOS, but as soon as I enter the BIOS the keyboard lights switch off (Num Lock and Caps Lock) and I ...
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1answer
75 views

Linux Virtual Machine for Windows 7 that will run Keryx?

I'm having a problem getting packages onto a Linux computer that doesn't have an internet connection. The accepted answer here suggests Keryx, which needs a Linux computer with internet to get ...
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0answers
21 views

Mounting a VBox shared folder as user [duplicate]

In my Windows host, I have an Arch linux VirtualBox guest. I setup a Windows folder as a shared folder in VBox. I then manage to mount the folder as type vboxsf in my guest (done in /etc/fstab), but ...
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1answer
7k views

airmon-ng shows empty results in Backtrack 5 R3

I installed VMWare Workstation 10 and Backtrack 5 R3 64-bit as a virtual machine on it. Currently, I am using Windows 8 64-bit. When I run airmon-ng in Backtrack, it shows empty results. I searched ...
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0answers
164 views

How to merge 2 mp4 files with 1 atom?

I'm merging two mp4 files for video streaming. the problem is, the merged file contains two atoms, 1 atom from each file and that is a problem when it comes to streaming. the client needs to wait ...
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0answers
391 views

How can I call phones from my pc using a mobile phone connected to my pc?

I mean this question in abstract for usb/bluetooth connected featurephones and dumbphones. But also specially for this mobile phone: Motorola RAZR V3i I have computers running debian and ubuntu, can ...
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1answer
510 views

Two partitions on USB drive

I want to have two partitions on my USB drive. First one mainly for all files, I decided to be FAT32 because it works on Linux and Windows. Second one for my Linux Mint backup and private files, ...
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1answer
1k views

Ubuntu 10.04 using ssh without entering my password

I know questions like this have been asked before, and I have read them all (that I found). The problem I have is that we have an embedded linux device that we can log into for debug purposes by ...
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1answer
83 views

Bootloader can't load Windows?

I am using Windows 7 and it's installed on Local Disk C. I also installed Linux on another Local Disk. Because of the lack of storage, I formatted the local disk of Linux and merged the space with C. ...
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1answer
3k views

GPT disk partition recovery

I am having troubles getting my partitions to show up correctly on one of my drives. Setup: Linux 3.10.10-1-ARCH Disk is 2TB and has GPT with two partitions. The two partitions hold approx 700GB ...
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1answer
402 views

Unable to ssh to my desktop

I'm trying to ssh from my mac laptop to my linux desktop. I ran ifconfig on my linux desktop (the target machine) and got the ip address listed under eth0 (the machine is connected via wire - not ...
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1answer
1k views

How can a partition be full if du does not show it is?

On one of my systems, the root partition is full: snip:˜ # df -h Filesystem Size Used Avail Use% Mounted on rootfs 11G 9.3G 0 100% / devtmpfs 744M 36K 744M 1% /dev ...
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2answers
453 views

e2image restore file system metadata

I'm trying to recreate file system metadata on a virtual disk. I can save this metadata using e2image, and the e2image man page tells me I can use e2image -I to restore the file system. Unfortunately, ...
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5answers
317 views

Pre-authorise sudo? (So it can be run later)

I often set my work computer running some time-consuming computations before I go home in the evening. After they're done, I'd like it to shutdown. However, as shutdown requires root privileges, it ...
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3answers
196 views

Linux - Protection from ourselves (Root)

I love Linux and everything she stands for; however, unfortunately I grew up with Windows. Thusly so I have learned very bad practices (such as NT Authority will protect me). I have several Linux ...
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2answers
2k views

How to chmod +x a file in Windows, for use in Linux?

I have a file that needs to be executable in Linux, which I'd do by using chmod +x when using Linux. My problem is: this file is compiled in Windows, and it's a pain to have to open my Ubuntu VM to ...
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1answer
2k views

iceweasel (firefox) browser re-installation

I uninstalled my browser (iceweasel) from Add/Remove Software option in Kali Linux.At the time of removal it asked for one dependent package also to be uninstalled that I don't remember. But now when ...
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1answer
709 views

Should I create an EFI Partition In The Debian Installer?

In the Debian Installer after you are done partitioning I was asked if I wanted to create an EFI partition. I do have Windows 7 already installed in EFI mode apparently (that was a mess up on my part) ...
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0answers
527 views

Reusing pre-installed Windows8 OS after installing Ubuntu Linux alongside it

I've bought a laptop which came pre-installed with Windows8 (UEFI enabled). I've read in many places that if I install Linux alongside it, I could run my Windows8 virtualized (instead of using dual ...
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2answers
350 views

Grub boot loader uninstallation

The laptop I use is Acer 5733. I've partitioned my HDD as AHCI and IDE modes and installed Red Hat server in AHCI and Windows 7 in IDE. Now I want to remove Red Hat, how do I do this? Thank you in ...
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1answer
391 views

Is there a way to limit maxdepth for ls -Rhal?

Is there a way to limit maxdepth in a ls -Rhal command? I am aware of find . -maxdepth, but I want to be able to get the file information that comes with ls -Rhal.
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1answer
3k views

How to enable mouse focus in Linux Mint 15 with Cinnamon

I'm a big fan of mouse-focus, or "focus follows mouse", and I had this enabled in Mint 14, but when I reinstalled with Mint 15 I can't find the option anywhere. None of the sections in "system ...
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1answer
340 views

How can I detect long-lived connections and mark them for shaping

I would like to detect TCP connections which have been open for more than one minute (or for greater than N bytes, or M packets), so I can classify them as bulk traffic ("downloads") and de-prioritise ...
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2answers
618 views

How do I restore windows 8 / hard drive after hard drive overwrite?

So I have been a bit of an idiot... I was installing fedora and I clicked through the partitioning without much attention assuming that fedora would be installed in dual boot. It seems to have ...
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1answer
641 views

I accidentally deleted my /root folder and now my shell string is different. What gives?

I stupidly managed to delete my /root folder on CentOS. I re-created an empty /root folder and set root privs to it, but now my shell string in PuTTY is different. Whereas it used to say ...
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2answers
171 views

How do I list every other file extension using regex on Linux?

I have the following command which lists all files that have the extension .swf however I would like to return a list of every file that does not have the extension .swf find . -maxdepth 1 -regextype ...
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1answer
467 views

OOM killer despite lots of free memory on PAE kernel

We have an application server which for legacy reasons still runs on 32bit kernel with PAE (Ubuntu 12.04 LTS). The server has 24GB of RAM, as seen in the output of free: $> free -lmt ...
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2answers
262 views

Processors cores over processor speed [closed]

Dual 5520 Quad-Core Xeon 2.26GHz with HT & Turbo(2.53 GHz) -vs- Single Quad-Core E3-1240v2 (3.4 GHz to 3.8 GHz) I run web hosting. I'm just wondering which would be more ideal. Personally, I am ...
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1answer
346 views

How to run GCC compiled output on NTFS drive?

Basically, I have three major partitions on my machine as I'm dual booting: Partition1: Windows-7 Partition2: Linux-Mint Partition3: SHARED_NTFS_DRIVE Well, I've reserved only a minimal chunk of ...
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4answers
82 views

Catalog of programs listed in bash

In bash (or any other shell), when you type "firefox" or another command, how does bash point it to its actual location (/usr/bin/firefox)? Also, where is the "catalog" for bash autocomplete?
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2answers
1k views

On a linux shell, what is echo $? supposed to do?

I came across a shell script where echo $? was used. What does this mean . How can we use this in a shell script. Are there any references for this.
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0answers
339 views

How to install reliable/flexible GRUB for multi-boot (Windows, Linux)?

This question must've been asked a billion times, but I haven't found a real GRUB-related solution. I need to install GRUB on a machine that'll have both Windows and Linux (Fedora) installed. It must ...
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2answers
2k views

List subdirectories one level down that do not contain a certain file

How can I find all subdirectories in a directory (only 1 level down) that do not contain a given file ?
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2answers
850 views

IPv6 tunnel from behind an ISP-level NAT

Previously, at a different location, I set up a Hurricane Electric IPv6 tunnel, which worked fine, allowed me to access IPv6 only sites and test the native IPv6 connections on my remote servers. ...
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1answer
257 views

Routing issue with bridged connection

I had a problem setting up a wired to wireless bridge on my Raspberry Pi box - but that is now fixed - Wired to wireless bridge in Linux - but the consequence seems to be that the squid proxy server ...
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1answer
718 views

Debugging “clogged” TCP connections

I'm having trouble with an internet connection that seems to randomly "freeze" arbitrary tcp connections when they have not been used for a while. The connections stay established, but no data is ...
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2answers
237 views

LVM without stripe

I want to use LVM to have a partition that spans over multiple drives. I know that there is a down side in that if one drive fails all the data in the array is lost. Is it possible to have LVM not ...
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3answers
650 views

Difference between xargs /bin/ls and exec ls?

Hi this may be a very newbie question, but why doesnt the xargs /bin/ls work in this case? I thought it was supposed to be faster? Also what are those /fd/3 directories? sh-3.2# find / -name 'GOALS*' ...
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2answers
4k views

How to automatically change permissions for files copied to a directory?

I would like to automate changing permissions for files copied to a directory. For example, any files copied to folder X should have mode 755, and any files copied to folder Y should have mode 700. ...
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1answer
151 views

Tiling window manager where dual heads share common workspace [closed]

I want to use a tiling window manager with my dual monitor setup, but almost all wms seem to treat each monitor as an independent workspace. This means that I can change the workspace of monitor 0 ...
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1answer
7k views

Sharing Wifi-internet access via bluetooth

I'm on an extremely strict wireless network, which locks down one machine to one account. [Hotel wifi] Is there a way that I can share the Wifi connection with my android tablet via bluetooth? ...
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1answer
387 views

lshw tells me my processor is a 64 bits but my motherboard has a 32 bits width

Recently I noticed lshw tells me a strange thing. Here is the first part of my lshw output: bpetit-1025c description: Notebook product: 1025C (1025C) vendor: ASUSTeK COMPUTER INC. version: x.x ...
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2answers
3k views

Running Linux commands in the background: ampersand (&) or screen

Running an app in the background can be done by adding ampersand (" &") at the end of the app or via screen (by opening a screen session) if the app needs input now and then. Is there any other ...
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1answer
657 views

Restrict mouse from moving to secondary monitor

I have two screens connected to my system and I am working in Ubuntu Linux. Is it possible to make the mouse work only on one screen and to make it stop going in the second one?
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1answer
551 views

How to automaticaly mount luks-partition only when disk is plugged in

I have the following scenario: I want to automatically backup some data from my Laptop(Fedora Core 17) to a external encrypted(luks) hard disk. The disk can be opened by a key file, which lies on the ...
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1answer
74 views

Printing: Different pages from different feeds (pdf)

I've got a pdf document and want to print it about 100 times with a Kyocera fs 4020dn printer. I'd like to have the first page on colored paper. Is it possible to tell the printer to take the first ...
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1answer
628 views

How to make VirtualBox headless answer on rdp port?

I'd like to run windows xp on RDP: $ VBoxManage modifyvm winxp32 --vrdeport 3389 $ VBoxHeadless -s winxp32 -v on Oracle VM VirtualBox Headless Interface 4.1.18_Debian (C) 2008-2012 Oracle Corporation ...
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1answer
126 views

How to view LuraWave images on Linux?

I have a number of images I compressed as LuraWave before I knew about advantages of open formats in general and Jpeg2000 or c44 in particular. What is the simplest way to view *.lwf images in Linux? ...
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6answers
672 views

Why do Linux systems have multiple virtual consoles?

We can switch to a text console by pressing Ctrl+Alt+F<1-7> on the keyboard. What are the uses of these consoles, and why are there multiple consoles?