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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Visualize memory and its segment of process in Linux

I am currently trying to see memory segmentation in action of a process for learning purposes. I know the basic theory but what I hope for is to see how it work in a real program which I can debug. ...
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The requested URL was not found on this server

Wordress + Centos 6. SO, permalink structure works just fine on the wordpress default perma links, but when I switch over to postname, I get the 404 error. My .htaccess: <IfModule ...
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Finding files greater or smaller than a certain size with user input (Linux)

I'm writing a script that will ask a user if you wants to find a file greater than or smaller a certain size but i'm having trouble calling the variable (input) of the user. read -p "Do you want to ...
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6 views

Reverse port forward using windows

I've got a VPS (vps.mindfulhacker.tk) and I'm running a game server on my windows machine. IF my machine was running linux / mac, I could use the following command to make my game server accessible ...
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5 views

Freepbx outbound calls through an FXO device (Grandstream GXW4108)

Im trying to use GXW4018 fxo gateway with freepbx. Inbound calls work as expected but outbound calls doesnt. Outbound calls work but i cant seem to be able to force an extension to dial out with A ...
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12 views

Sudden sluggish performance of ubuntu system

since 3 days a very important system at my workplace started a most peculiar behavior. There is no internet connection on that PC and no updates have been made. When I started the PC 3 days ago after ...
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9 views

Processor never reaching maximum frequency

I have an Intel i7-3630QM which, according to both the adverts and /proc/cpuinfo, can go up to 2.40GHz per core. I ran cpufreq-set -g performance cpufreq-set -f 2400000000 And I'm running a ...
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1answer
35 views

Complete wiping of hard drive - shred, wipe or dd?

I need to wipe all data of a number of hard drives, from Ubuntu Linux. I have found three command line tools: shred, wipe and dd. It seems kind of random what people recommend. Sometimes someone ...
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4 views

Correct location to configure a bridge using iproute2

I'm setting up a server for KVM virtualization and having a play with linux networking while I'm at it. Initially I'm aiming for a very simple bridged network set up where eth0 is enslaved to the ...
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21 views

Ping command in different Operating Systems? [on hold]

What is the flexibility of Linux in dealing with the ping command for Windows? Ask a question in one of the professors lecture information security do not know anything specific anyone can help thank ...
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7 views

Unable to get Linux Live installation media to properly boot from USB on 2006 iMac

I'm trying to dual boot linux on a 2006 iMac. I have tried Arch, Ubuntu, and Fedora. I originally created the Arch USB installation media following the instructions in the Arch Beginner's Guide. ...
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5 views

Check if a daemon triggers watchdog

I read about sd_notify (http://www.freedesktop.org/software/systemd/man/sd_notify.html) and was wondering if it's possible to somehow find out if a daemon sends some notifications. In particular, I ...
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12 views

Recovering from a boot error

I was doing a project for my library where I installed Ubuntu desktop on a couple of hard drives. When I finished, I shutdown my machine, but when I tried booting back up again, I noticed that there ...
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1answer
23 views

Access TrueCrypt mount over network

I'm running Linux Mint in a Virtual Machine (VMWare) with a Windows 7 as host. I shared one of my Windows partitions to access it in the Linux guest using Samba because of a problem with permissions I ...
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20 views

CentOS 7 on VirtualBox Using 100% CPU

I have CentOS 7 installed as a guest in a VirtualBox 4.3.18 virtual machine, with the latest guest additions installed too. The host operating system is OS X Yosemite running on my 2014 MacBook Pro ...
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3answers
448 views

Is SELinux important if I'm the only one who uses my computers?

I've got two Fedora laptops and a CentoOS home server, but I'm the only person who uses any of them, with the exception of a smb share that a family member uses. Does SELinux have any real benefit if ...
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14 views

How to find the culprit of high sysload on NAS?

I have a QNAP TS-410 NAS, modest little ARM-based box. In the past the sysload of the NAS would be well below 0.5 for all load averages (1, 5 and 15 mins), it would only spike while sabnzbd was ...
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5 views

Can't send email to my own domain

I've set up sendmail on my ubuntu server and I have the following PHP code set up to email my own domain contact@example.com: $subject = "Hello!"; $message = "This is a test."; $header = "From: " . ...
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1answer
11 views

Way to easily identify all default fonts in applications?

Debian Kwheezy (a Debian Wheezy spin with KDE), came bundled with every imaginable font and hundreds of fonts that are there to support various foreign languages in their extended character sets. A ...
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301 views

On Linux or Windows, how do I find the path for all mp3s that are the only mp3 in that directory?

I have a Music folder and the contents look like this: Music     -ArtistA ...
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11 views

Installing lscpu utility on Redhat 5.11

I am using Redhat 5.11. I require an utility 'lscpu' which comes with "util-linux" package from version 2.15 (read somewhere on Internet). The max version of util-linux package that is supported by ...
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1answer
7 views

Dotted lines in GTK3 Theme

I recently tried the Vertex Theme, you can get it here in case you are interested. It looks very decent in my opinion, except for the dotted lines in windows using GTK3. As they seem to be for visual ...
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1answer
31 views

“Unable to Display Current Owner” & Access Denied when trying to take ownership

I'm facing a problem where I (logged in as the Administrator) am unable to view file attributes. Please see the screenshot below. I'm not interested in taking ownership (even if I wanted to I'd to ...
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20 views

Recommended Partition Layout for a Debian VirtualBox Server

First I posted this on Unix & Linux, but got no response so I deleted my post there before moving it over here - so this is not x-posting. I understand the basics, but I have a few requirements ...
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2answers
19 views

Recommendations for running Linux together with Windows 7 on Toshiba Satellite

I have never installed linux before, but I would like to run it on my Toshiba Satellite C660-1UJ (64x, 4GB RAM, Intel Core i3 CPU - 2.10 GHz) next to the current Windows 7 Home Premium OS. I read some ...
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28 views

Linux Mint 17 Windows network shares

I have installed Linux Mint 17 Cinnamon on my desktop in an effort to migrate from Windows (and only keeping a VM with Windows) but soon I discovered that I can't see any workgroups after I click on ...
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9 views

ntpd works not as expected when the offset becomes large

I changed the /etc/sysconf/ntpd with the option -x added in ntpd client server.And I found ntpd works fine when the offset between the client and server is less than about 10 minutes.If more than 10 ...
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10 views

rpm signing error rpmMkTemp failed

I'm running into this error when signing an rpm file. I've not got a whole lot to go on as you can see, and google seems to have come up empty. I'm stumped ! Does anyone know what causes it ? I'm ...
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6 views

Making a connection between puppet and puppet agent.

I know this question has been asked before in many different variant. I read all the post related to the problem but I cannot get agent and master talking to each other. I boot up 2 vm via vmwork ...
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1answer
12 views

Linux console periodically hangs for sporadic, short periods of time

I am working with embedded Linux, and I have some strange behavior on custom board, in which the serial console—connection via UART—hangs for a 1-2 seconds every 15-20 seconds: The entered chars in ...
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6 views

What is the command to check supported ciphers on a SMTP(TLS) server

What is the command to check supported ciphers on a SMTP(TLS) server I need to check the supported ciphers for SMTP
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9 views

How to access mail in an organized manner

I just finished setting up postfix on my ubuntu 14.04 server, however, to access my mail I have to use command line. How can I make it so that I can access the mail in an organized manner, like ...
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how to monitor network/cpu/memory/disk usage by each Rails app

I run many Rails app on linode VPS I want to charge my customers by their usage, Is there anyway to monitor each Rails app's usage ? I need these information network/cpu/memory/disk usage Any ...
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16 views

How do I share my wlan0 internet connection to eth0 using command line and config files?

I understand how it is done using the GUI (1, 2, 3), but I need to do this manually using Linux tools/commands (iptables, eatables ...). What are the configuration steps and commands to use, ...
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2 views

Configure CUPS to run all printouts through Ghostscript to embed fonts

My office printer (some HP product or other) substitutes Courier or a look-alike for any font that is not embedded. Naturally this looks horrible. I would like to configure CUPS so that it runs all ...
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8 views

Why am I getting “FATAL: Ident authentication failed for user ”root“” after changing rails server to port 81

I was running my rails app on the default port of 3000. I opened port 300 with: sudo iptables -A OUTPUT -o eth0 -p tcp --sport 3000 -m state --state ESTABLISHED -j ACCEPT and sudo iptables -A ...
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2answers
25 views

How to migrate a root filesystem to another partition from within running system?

I try to migrate a root filesystem from ext4 to another partition type (zfs) and started with a simple rsync -a --exclude=/boot --exclude=/mnt --exclude=/media --exclude=/tmp --exclude=[all zfs ...
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2answers
30 views

Windows 8.1 Advanced startup options disappeared

OK so a bit of background: I need to disable driver signing because I need to install a modified driver so that I can hook up my PS3 controller. I have a dual boot setup with Mint 17 and windows 8.1 ...
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20 views

How do I set a static permanent IP on a raspberry pi [duplicate]

I have an NOOBs-Raspbian Raspberry Pi. How can I set an permanent static web IP to it?
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1answer
11 views

Error compiling the linux kernel 3.8.0

I am trying to compile the Linux kernel on my virtual machine which is installed Lubuntu, and I am getting the following error: In file included from ubuntu/aufs/aufs.h:45:0, from ...
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1answer
21 views

How to build an sd card image, without an sd card?

We have a scripted process that builds up an embedded install of Debian Jesse on an sd card. The relevant parts of the script look like this: export DISK=/dev/sdb umount ${DISK}1 # make sure no ...
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21 views

How to keep ppp up and running

I'm using a USB Cell Modem on a Arm SBC running Debian Jesse. I have a wvdial.conf file and a ppp0 file in my /etc/network/interfaces.d directory: auto ppp0 iface ppp0 inet wvdial It mostly Just ...
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2answers
15 views

Virtual folder combining a read-only and read-write directory (file deduplication)

Is it possible in linux to have a directory that contains all the contents of another directory (in a read-only fashion) but you are able to write to the directory without it affecting the 'parent' ...
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3answers
16 views

Debian Linux: /usr/bin/nologin missing

I have set up a Debian Linux server, now I want to disable the shell so the user can't login and just connect via SFTP. But my /usr/bin/nologin is missing for some reason. In which package is it ...
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1answer
23 views

Passing different set of arguments to the different commands in a linux bash script

I am writing a bash script foo.sh that runs too commands bar with first input argument, and baz with the second argument: #! /bin/bash bar "$1" baz "$2" Now I want to make foo.sh more flexible, ...
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How to execute a system command one minute after reboot (Linux)?

Is it possible to run a system command such as mount a certain amount of time after system reboot? My problem is that I had an entry in /etc/fstab to mount a host disk in a Linux (Ubuntu) virtual ...
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23 views

install ipkg on DS413j DSM 5.0

I would like to install sudo with ipkg. First ipkg need to be installed. You can find the bootstrap tutorial of Synology here. The DS413j has a Marvel Kirkwood mv6282 ARM processor. So I used this ...
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4answers
33 views

Connnect to Linux from Windows using PuTTY over the Internet

I want to connect to Linux from Windows using PuTTY, over the Internet. This will give my friends access to execute shell script files on my Linux (Ubuntu). I have tried this on Windows 7 and Linux ...
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5answers
49 views

How to copy hidden (starting with a dot) files and subdirectories in linux?

How to copy hidden files and hidden subdirectories (the ones starting with a dot) in folder A to folder B? For example if I have this structure: A/a A/b A/.a A/.b/ A/.b/somefile A/.b/.c I would ...
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How to add files to dotfile-castle with homesick?

So I've setup my dotfiles repo on github and installed homesick to manage my dotfiles. So now I happend to have a clone of the repo on my local machine but also a cloned CASTLE ...