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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How to provide “reverse ssh” to a shell?

Scenario: Many embedded devices (running Linux) out in the fields, behind routers so NAT'd and we can't make connections to them. We need for a support person to be able to initiate a terminal/shell ...
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559 views

Setting reduced complexity passwords for a regular user

From root it is possible to set a single character password for any account Example: Here I created a account test3 and set the password t, and the password is accepted [root@localhost ~]# useradd ...
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102 views

RAID 1 : one device reads while the other writes symmetrically. What is going on?

Take a look at the disk throughput of this two disk software RAID 1 array in a Linux 2.6.26-2-686 Debian system : As you can see, one device reads at a speed apparently close to its top throughput ...
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1answer
3k views

wget not working on one machine: 404 Not Found

I am trying to use wget to debug and issue I am having. I have a remote machine from one server trying to reach query.json and it works fine, connects and downloads fine. I have another remote machine ...
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1k views

Setting permissions on /var/www is not working correctly for subdirectories and files

I followed these instructions (in the accepted answer) for setting up permissions on my /var/www/ folder. I'm using the www-data group as it says to use. jdownes and testuer1 are both memebers of the ...
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2answers
1k views

Permissions errors when connecting from Windows7 to a SAMBA server

I've got a Win7 system that connects to my Ubuntu server, where I keep my music and other media. I can access my media files from the Win7 machine, but I often get permissions errors, for example when ...
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218 views

eth0 always has 192.168.1.1 and ignored a network with a DHCP server

Rarely my network interface (eth0) always has: $ ifconfig eth0 eth0 Link encap:Ethernet HWaddr aa:00:04:00:0a:04 inet addr:10.100.1.198 Bcast:10.100.1.255 ...
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2answers
187 views

Is it secure: Storing an unencrypted keyfile in a volatile location?

I have multiple hard drives that should all be encrypted with the same keyfile or passphrase. Here's what I planned as an approach: I encrypt every hard disk with LUKS / cryptsetup and choose a ...
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2answers
765 views

Can Synergy be cross-compiled on an ARM platform?

I am trying to compile a Synergy client so I can use it in a WindRiver Linux environment. I've tried compiling and I keep getting this error: CMake Error at CMakeLists.txt:195 (message): Missing ...
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1answer
3k views

MySQL ERROR 2002 (HY000) on CentOS 5

I have problem with starting up mysql. When I type service mysql start All I got is ERROR 2002 (HY000): Can't connect to local MySQL server through socket /var/lib/mysql/mysql.sock' (2)** ...
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173 views

Linux Mint gets stuck when using wireless card “rt73usb”

I'm changing Linux distributions a lot, wishing to resolve my problems with the wireless card identified as rt73usb, like explained in this question of mine. Now I'm using Linux Mint 12. I noticed ...
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2answers
174 views

vim (gvim) marking occurrences on the vertical bar?

When I search for a string, vim(gvim) highlights all the occurrences, which is great. But is there a way to show the occurrences with markers on the vertical bar on the right hand side, so if I click ...
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257 views

Ubuntu 12 Headless Monitor on D2700 Board

I'm trying to set up a home web server running Ubuntu 12 LTS (Desktop). The server itself boots and runs fine and i'm using a vnc to connect to the server via another desktop. The issue I have is ...
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2k views

Sony Vaio Laptop not booting - black screen

I have a Sony Vaio laptop - not sure on exact model as I am not at home currently - can post later if required. I have it dual boot running Linux (Ubuntu 12.04 LTS (Precise Pangolin)) and also ...
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51 views

Is it possible to restore from Fedora automatic backup?

I've accidentally deleted everything using: rm -rf /* I did not know what the commands was, I thought it would only delete the folder I was in. Now nothing works, not even terminal. Actually after ...
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1answer
112 views

How remap ctrl + k to ctrl + v in linux?

I use a Dvorak keyboard, and I want to use the shortcut like a Windows/Dvorak. I've tried to use autokey but doesn't work very well. I'm interested in a solution on Xorg directly, of the style of ...
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2answers
389 views

Input focus stays with vmware guest when host gets locked

I am using a combination of xautolock and slimlock to automatiacally lock my machine if it does not receive input. ~/.xinitrc: xautolock -locker /usr/bin/lockify.sh -time 5 & ...
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161 views

Samba Share: smb doesn't set group id bit

I have some problems with a smb share. Every subfolder should get the group id bit. If I create a directory local on the machine with: $ mkdir local the bit is set, but if i create it via the smb ...
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225 views

Making gnome see xkb changes

This is on Oracle Linux 6.3, but I bet it applies to any Gnome based distros. I have edited /usr/share/X11/xkb/symbols/ru, to add a layout section: partial alphanumeric_keys xkb_symbols "stdwin" { ...
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1answer
158 views

Is there a way to know the font type used by console and its location in linux?

Anyone knows how to trace this? I'm learning the way font works by doing this BTW.
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1answer
877 views

Creating usr/local/bin symlinks for things in usr/bin good idea?

I have a Linux production server and development machine that runs OSX. Stuff that is in usr/local/bin on development is installed into usr/bin on Linux. That creates some problems and I always have ...
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1answer
419 views

How to stop my laptop from throttling my CPU?

I have an AMD TL-60 mobile processor. I've noticed that often when I watch videos, I get a really jerky playback. I can fix it if I run the following command: echo 2000000 > ...
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507 views

What could cause a disk read speed of ~5MB/s? [closed]

My harddisk seems to have a very low read speed of only ~5MB/s. [root ~]# hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 14 MB in 3.02 seconds = 4.63 MB/sec Also, after going into ...
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1answer
29 views

On Linux where should I store non-subversion files for a web site? [closed]

I've finally upgraded to a VPS. I'm planning to run about 4 - 6 sites off it each with a fairly sizable files directory. That is, user uploaded media content such as images and video clips. I ...
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2answers
3k views

RedHat Network - Unable to register

I'm trying to register my RedHat machine to my RedHat Network account but when I try, I get this error: Problem registering system: Error Class Code: 70 Error Class Info: All available ...
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1answer
572 views

Playing sound on server using php

I want to play a sound file on my server using PHP. The PHP script is called by Apache and runs under the user 'nobody', which has by default no access to the speakers. So I created a new user ...
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1answer
1k views

Run script after all interfaces were up in Debian

In order to setup a load-balanced permanent routes in debian, according to this article, i have to run the following command ip route add default scope global \ nexthop via 10.100.0.254 dev eth0 ...
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1answer
1k views

Linux Mint 13 is not booting on dual boot computer

I have 2 hard drives in my computer a 300 GB drive which is my primary drive for windows 7 and a 1.5 TB drive that I'd used for storage. When I got it I partitioned 500 GB for use in Linux. So, I ...
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2answers
684 views

How to make your ubuntu filesystem read-only

I wonder whether there is a way to make my ubuntu read-only when I mount it on another linux system. Let me clear what I want. I have a usb stick on where my ubuntu is installed. However, the problem ...
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568 views

How do I set the primary display on rhel 6 with dual displays

I've got a lenovo T410 laptop running RHEL 6.3. When I plug it into my docking station I've got it setup to do dual display, but it insists on using the laptop as the primary display keeping the ...
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141 views

s3fs gives me an empty directory

I built s3fs, and now I'm getting an empty directory where I mounted the s3 bucket. I put a text file in the directory, and I can see it in there, and it transfers into the bucket. How can I see the ...
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159 views

Forward second keyboard input to window and split-screen terminal and KDE

I have two keyboards (one internal and one external) and I want to split-screen Linux video output so I'll have tty on one half and X11 on second half and I want redirect input from external keyboard ...
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1answer
1k views

Bluesnarfer in Backtrack 5

I'm new to backtrack and I am learning to hack Bluetooth . As you know I must use Bluesnarfer. But when I use it I get this error: Can someone help me to solve this, I searched the Internet but I ...
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1answer
77 views

How to share the environmental variables between windows and linux(Ubuntu)

I have windows 7 and ubuntu installed as dual boot. Till now i was working on Windows and have defined my user environmental variables. How can i import or use those defined in windows to ubuntu?
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1answer
94 views

Brasero Disc Burner does not behave. How to address it in command line?

As you know the Brasero Disc Burner is the default disc burner in some Linux environments. I used Brasero a few times, each time choosing a different speed at the outset. But no matter which speed I ...
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559 views

Bind mouse button to Control_L or Super_L keys

I'm trying to make mouse button act exact as Control_L or Super_L keys. In lots of applications (firefox, konsole, etc.) Ctrl+Scroll has special actions like zooming, so assigning mouse button to ...
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176 views

Linux Ubuntu Server x32 not recognizing my hard drive

I am trying to install Ubuntu Server x32 on my IBM eServer xSeries 365. The installer says it can not recognize my drive. I have 2 hot-swap Maxtor ATLAS 10K V 73GB Ultra320 SCSI drives and both are ...
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1answer
509 views

Cannot read /proc/<pid>/smaps, despite having mode 444 permissions

I'm trying to write a script that examines memory usage for running processes. To do this, it needs to read /proc/*/smaps files. Processes owned by root have the permission set to '-r--r--r--', which ...
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102 views

Multiple viewports into the same Virtual Desktop

I have been looking around for window manager solutions that would work nicely for me. While I have found a number of things, I have not yet found anything that really works well for my needs. Usage ...
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1answer
498 views

how to enable caches in u-boot for imx boards?

Since I am working on boot time optimization for imx boards , I heard enabling caches(D-cache or I-cache) in u-boot causes improvements in boot performance.Can any one suggest the way to enable ...
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1answer
1k views

PDF to PDF/A converter and validator for .NET or Linux

I want to convert PDFs to PDF/A under either Windows or Linux. If Windows I want a managed .NET library (with a DLL, not installation). If Linux then the validation file must be readable for code. ...
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485 views

Different drivers for different Nvidia GPUs in the same system

I have the following two video cards installed in my Arch Linux system: $ lspci | grep -i vga 01:00.0 VGA compatible controller: NVIDIA Corporation G84 [Quadro FX 1700] (rev a1) 02:00.0 VGA ...
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1answer
144 views

change colours when running screen

I use gnome-terminal in Centos 5. I have my terminal settings customized to use the colours I like. However when I run screen (or tmux) the colours for my terminal input lines are always inverted. ...
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99 views

fedora 17 when close the notebook cover

the screen turned black and the screen shows "no vaild vbios image found". where's the problem? my notebook is ASUS A42JC, and I install fedora 17 using DVD.
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70 views

Overlapping links in chrome linux

Sometimes, at times which seem not to relate, chrome renders links overlapped on normal text. Has anyone had this experience or know how to solve the issue? On refresh, the problem might resolve ...
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749 views

Problems setting up VLC Sever/client streaming

I'm trying to set up a Linux machine as the server and a Windows XP machine as the client. Both machines are connected to the same local network via a Wi-Fi router. I setup the stream with the ...
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2answers
477 views

How can I create a bootable SD card with linux kernel?

I just order an ARM Cortex A8 development board with preinstalled Android, but instead of the preinstalled OS I would like to use Linux, so I compiled the kernel with success, but I don't know how can ...
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161 views

Efficient mirroring of directories using hardlinks

I'm backing up my music collection on to a number of NTFS-formatted external hard-drives; however, as I store my main collection in FLAC and have my library on my laptop as MP3s to save space, I want ...
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1answer
1k views

Switch GNU Screen windows with F-keys on PuTTy

I'm trying to use the f-keys to switch windows on GNU Screen/PuTTy, but I can't get it to work. This is my current .screenrc: bindkey -k k1 select 1 bindkey -k k2 select 2 bindkey -k k3 select 3 ...
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276 views

What might cause cron jobs to occasionally not run or complete?

In my crontab, I have set MAILTO and a bunch of cron jobs (5-10 jobs). These cron jobs usually run fine and I get emails for them. Most of these jobs consistently run as expected. Emails and ...