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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email does not deliver body when I use < 'file'

Moving from centos 5 to 6.4. I have many scripts that use mail with < 'file' at the end to email various reports to users rather than use -a BUT when I use that syntax with the mail installed on ...
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820 views

Convert stream file (mux) to mp4 gstreamer

I used a program to capture my screen (called Kazam for linux). My computer crashed and I lost my screen capture which I cannot recreate. I found two files that seem to hold my video, a .mux and ...
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164 views

Change UDP port with iptables for VPN clients

What I want to do is say that for all UDP connections on interface ppp0 that have a destination port of 53, change that destination port to 1053. I am attempting to change the destination port of UDP ...
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1answer
7k views

How to adjust the PKG_CONFIG_PATH environment variable, while running ./configure

I'm running into this error message while trying to install from a tarball configure: error: Package requirements (gtk+-2.0 >= 2.16.0) were not met: No package 'gtk+-2.0' found Consider ...
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1answer
69 views

Windows Extended Volume to Linux?

I have two 3TB drive on my Windows Server 2008 R2, that I have "extended" together to form one 6TB dynamic volume. I'm going to install a Linux distribution on the server, and am wondering how I ...
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2answers
284 views

copy logical volume to another server

I have copied a logical volume from Server A to Server B, using dd command, however every time I try to mount the volume root@munin:~# mount /dev/DS/data_snap /mnt/ mount: you must specify the ...
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2answers
1k views

How can I sort a long list of text alphabetically?

How do I sort rows of text alphabetically without using specialized third party software or plugins (like Notepad++/Word/Excel/et al)? I suppose what I'm perhaps asking is -- How do I sort rows of ...
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1answer
176 views

Usb keyboard connected on windows, sending keystrokes to linux tty over Lan

My current set up, i have a usb keyboard connected to a windows machine, I have linux machine on Lan which has a monitor but is NOT running X.org, (synergy won't work for me). I was wondering is ...
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1answer
1k views

Openssl decrypt from encrypted text from command issue

I am using following command to decrypt an base64 string. openssl enc -in ciphertext -out binarytext -d -a openssl rsautl -decrypt -in binarytext -out plaintext -inkey private.pem I am facing an ...
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1answer
2k views

PuTTY - Display whole server output (screen command)

I am using PuTTY to administrate a Minecraft server on a remote Linux machine. I do not own the server but I have an SSH account. The server has a console window which can be accessed with the screen ...
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1answer
258 views

How to bind super and arrow keys to windmove in Emacs?

I'm trying to bind Super and the arrow keys, (s-up, s-down, etc) to change windows in Emacs. Unfortunately I'm having trouble setting it correctly. I am running Kubuntu 13.04 with Emacs 24.3.1. ...
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506 views

Automatically transfer completed downloads from seedbox home

I'm pondering a move to ruTorrent/rTorrent and was wondering how people have gone about automating transferring content from their seedbox to a linux based home server. I'd like to: 1 - Download ...
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2answers
110 views

Circular RSync for Wordpress

I've got 4 servers in a load-balancing setup. And I've got a wordpress app on which I need to upload images. Now there is rsync set up on all the servers on a cron with a 1 minute interval with the ...
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63 views

How to upgrade an offline computer's OS and software?

I have a Linux computer that is kept offline for extra security. How do I keep it up to date without putting it online? It's running Fedora 17, but I don't mind changing to another distribution if ...
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221 views

How do I run WEBrick as an upstart job?

I need to get WEBrick (basically a Rails web server) to work using upstart, but cannot figure out what should I write in script. The following gives me an error: chdir /rails-app exec su -s /bin/sh ...
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36 views

Managing Linux Machines

I have a bunch (hundreds) of low-end machines running Linux (mostly Ubuntu and CentOS distributions) spread out all over the world that I don't like to SSH into very often. I would like, however, to ...
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21 views

Linux boots when I click “Windows 7” in boot manager [duplicate]

I've been trying to dual boot, which has pretty much been successful. I have Linux installed on an external Hard Drive. In the boot manager when I click on Windows 7: (with the hard drive plugged ...
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215 views

setting up linux routing table for mutliple wifi connections

I would like to increase the speed when downloading large files on a public hotspot by using both a built-in wifi-adapter (wlan0) and a wifi-usb-stick (wlan1). As bonding wifi-devices does not seem ...
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1answer
610 views

Use Qemu & chroot to reset password on mounted external disk

I have a NAS based on Linux, but the root password is kept secret by the manufacturer. Now to reset the password I am trying to mount the disk to my local linux computer. All of the files are present ...
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1answer
163 views

Add a window padding to guake

Text is too near the edge of the screen, I'd like to allow a small 10 pixel padding on all sides to comfort my eyes. Is this possible? I'm using guake.
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2answers
426 views

Is this (wireless) network layout possible with clearos?

I am planning the layout of my future home network. On it, I want to use a small pc with clearos on it as a firewall/server/router. However, I'm having trouble with the wireless part of my network. I ...
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1answer
2k views

Write file permissions for root user

I have a file called myfile that I would like to move using: sudo mv myfile deep-dark-directory/ I need to use sudo to move the file as deep-dark-directory needs root privileges to write and I ...
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1answer
357 views

Elementary OS - Stop MySQL from starting automatically at boot

MySQL is started automatically each time I boot my ElementaryOS Luna, how can I disable this and have MySQL off by default? I have verified that the mysql service is disabled at all runlevels using ...
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264 views

Trouble installing php-devel on CentOS

Working with a PHP install and trying to install APC on a server to help with speed issues with an application we're developing. We are having trouble getting phpize installed. phpize is not on the ...
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547 views

How to backup apps + data using TitaniumBackup directly to SMB share

I've been searching for answer to this question for quite some time now and finally decided I should as a question here. So I've managed to find a kernel module (cifs.ko) for my kernel build on ...
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1answer
497 views

VPN server on Debian with login access from Windows

I have a friend in a closed country that needs a VPN. I want to install a secure VPN server on my dedicated server. I have looked at PPTPD and OpenVPN, but I am not sure which one would be best? Or ...
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345 views

Rotate webcam video on Ubuntu Linux

I need to rotate (90 degrees) the video feed of my laptop webcam to use it with skype/hangout. It seems to be possible using the gstreamer infrastructure, but I don't know how.
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184 views

State of vanilla kernel support of RaspberryPi [closed]

What is the state of the support for RPi in vanilla kernel? What is holding back any possible merge from the forked RPi specific kernel repo back into the upstream? Is there any technical issue with ...
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2answers
554 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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94 views

My vbox shared mount will not auto mount and is only ready only?

My vbox shared mount will not auto mount and is only ready only? I am using scientific linux host and centOS guest and I am trying to share a folder I have in both accounts but the folder is only ...
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1answer
154 views

How can I reboot system using Upstart?

I'm using Upstart on Ubuntu 12.04 to control and monitor a service defined by me, where the service is a user process running as a daemon. I need to monitor it so, when it fails/crashes it respawns, ...
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1answer
213 views

mySQL outfile & permissions under Ubuntu Linux

I know there are already several postings on the stackexchange sites about Linux permissions, but I can't find the answer to my problem. I'm working on my own laptop (no web server or anything) with ...
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393 views

Lower bandwidth on Linux than on Windows behind same wireless router

UPDATE: When I connected via an Ethernet cable directly running from my Linux laptop to my wireless router, I get the correct bandwdith (~10 Mbits/s). It's only when I connect wirelessly that my ...
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1answer
837 views

configuring huawei e303e dongle on arm9 embedded board

i have been trying to connect 3g modem on arm9 board. bot modem is not getting detected. here is my lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID ...
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1answer
135 views

trouble shooting the connection between systems by using telnet?

I have a windowsystem called "A" and Linux system called"B" .Our application software is client -server software. So in this scenario server part of application is resding in a window system and ...
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2answers
1k views

How to find out what port is Exim 4 using for SMTP?

I'm trying to debug a problem with email sending on my home machine, possibly a router related problem. This is on Debian squeeze with Exim 4.72-6+squeeze3 (the default Exim 4 Debian package for this ...
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38 views

Check which printer is online

I have one machine with Windows 7 - Ubuntu 12.04 dual boot, i installed and shared over the network my printer on every two operating systems, naming it printer-windows on w7 and printer-linux on ...
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3answers
2k views

How to incrementally backup a partition (not as a bunch of files) and be able to mount the snapshots?

Is there any tools that allows this use case: I have a LVM2 partition vg-vol; I periodically create snapshots of it, save them (create_new_snapshot --directory=/media/external_storage/snapshots/ ...
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1answer
350 views

Can I make mount.cifs reconnect against the same DNS name?

I run Linux in a VM on a Windows host. When I'm in the office, my Windows host machine self registers it's DNS name and it's mymachine.myco.com. When I'm at home, it self registers as ...
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1answer
227 views

Bash script template to copy files to predefined destination folders

I need an interactive bash script template to copy files to predefined destination folders. If possible, when prompted for user input tab completion would be enabled for a predefined source directory. ...
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2answers
947 views

Iptables configuration to allow Steam Client

I recently got and setup a small linux (Debian) router box. I'm adding it to an existing network to create a small subnet with specific properties, namely internet content filtering. I'm highjacking ...
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1answer
192 views

USB boot of linux mint killed my HD installation of linux mint

I have linux mint 14 MATE edition installed on a T430 lenovo thinkpad laptop. Yesterday, I wanted to test my bootable USB drive on the machine. After 1 or 2 minutes it booted fine. I created a file to ...
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1answer
60 views

Finding postfix path

Using my linux machine, I downloaded postfix to receive and send mail. I can send external mail, but anything internal does not send. My local mail is being delivered to the file ...
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136 views

Linux kernel 3.9 new storage features howto?

Linux kernel 3.9 has been released, which brings new features for storage cache devices (dm-cache), as well as BTRFS RAID 5/6. These features are undoubtedly sexy, but are all but completely ...
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74 views

Insert blank page using Print Dialog

Is there a way to insert a blank page anywhere in the document using the print dialog? The use case in my mind: While in print dialog, if it were possible to direct the printer to insert blank pages ...
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3answers
953 views

zcat | head : write error from large gz file

I was trying zcat to get only the first 1M lines of a compressed .gzip file into a new one. However, I get the following error: $ zcat path/to/R2.fq.gz | head -100 >R2.fqtest head: write error: ...
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205 views

Gparted live CD UI crashed, gpartedbin still running. Anything I can do?

I'm running Gparted live CD v0.15.0-1 on a production file server (after having tested successfully on a similarly-partitioned test server). The actions I wanted to do are: delete /dev/sda5 ...
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1answer
283 views

How can I forward sound output of some Ubuntu virtual machine to my Windows computer?

Is there a way to forward sound output from some virtual machine running Ubuntu to my Windows laptop for example using some sound server (pulse) on Ubuntu and connect to it in Windows?
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604 views

How to dual boot RHEL 6 and Windows 8?

The Situation: I have an ASUS Notebook with Windows 8 preinstalled, i created a new partition and installed RHEL 6 to that partition, but the computer keeps booting into Windows 8 without going into ...
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1answer
72 views

Information flow in Linux - how to tell who is currently active and typing?

I'm currently playing a mafia/werewolves game with my cyber-security class. The basic idea is: on one machine, the moderator starts a server program all the players ssh into the machine and launch ...