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10 basic examples of Linux ps command

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The ps command on linux is one of the most basic commands for viewing the processes running on the system. It provides a snapshot of the current processes along with detailed information like user id, cpu usage, memory usage, command name etc. It does not display data in real time like top or htop commands. But even though being simpler in features and output it is still an essential process management/monitoring tool that every linux newbie should know about and learn well. read more...
permapage | score:9803 | -Silver Moon, March 24, 2014

Tutorial: Debian 7 Samba Server with tdbsam

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This tutorial explains the installation of a Samba fileserver on Debian Wheezy and how to configure it to share files over the SMB protocol as well as how to add users. Samba is configured as a standalone server, not as a domain controller. In the resulting setup, every user has his own home directory accessible via the SMB protocol and all users have a shared directory with read-/write access. read more...
permapage | score:9765 | -falko, June 5, 2013

Linux find command examples: finding files

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This is a quick tutorial on how to use the find command to search for files from the commandline. The find command is a powerful commandline tool in linux that can search files based on various criterias like name, modification date, size, permission etc. read more...
permapage | score:9755 | -Silver Moon, August 13, 2013

OpenVZ Mount Tutorial: Mount Host Devices, Partitions, Directories in Containers (Debian, Ubuntu)

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Sometimes you are in a situation where you need to mount a hard drive, partiiton or directory from the OpenVZ host inside an OpenVZ container - for example, you add a fast SSD to the host and want to put your container's MySQL databases on it to make MySQL faster. This tutorial explains how you can mount host devices/partitions/directories in an OpenVZ container with bind mounts. read more...
permapage | score:9749 | -falko, July 22, 2012

Tutorial: Create an NFS-like Storage Server with GlusterFS on Ubuntu 12.10

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This tutorial shows how to set up a standalone storage server on Ubuntu 12.10. Instead of NFS, I will use GlusterFS here. The client system will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA. read more...
mail this link | permapage | score:9748 | -falko, January 16, 2013

LG 8-inch G Pad 8.3 Android tablet

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But the LG G Pad 8.3 is not just about screen size, it comes with some cool features, too. Beneath that 8.3-inch screen size is a 1.7GHz quad-core Qualcomm® Snapdragon™ 600 Processor. That makes for a powerful tablet computer. read more...
permapage | score:9718 | -finid, September 8, 2013

Unix: Shell Script Wrapper Examples

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Shell script wrappers can make the *nix command more transparent to the user. The most common shell scripts are simple wrappers around third party or system binaries. A wrapper is nothing but a shell script that includes a system command or utility.

Linux and Unix like operating system can run both 32bit and 64bit specific versions of applications. You can write a wrapper script that can select and execute correct version on a 32bit or 64bit hardware platform. In cluster environment and High-Performance computing environment you may find 100s of wrapper scripts written in Perl, Shell, and Python to get cluster usage, setting up shared storage, submitting and managing jobs, backups, troubleshooting, invokes commands with specified arguments, sending stdout to stdout and stderr to stderr and much more.

In this post, I will explains how to create a shell wrapper to enhance the basic troubleshooting tool such as ping and host. read more...
mail this link | permapage | score:9703 | -nixcraft, June 24, 2012

Tutorial: Webcam streaming your desktop plus audio with ffmpeg, crtmpserver, Flowplayer

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This tutorial is based on Ubuntu Lucid, but will work on later releases as well with small changes. I will show how I stream my desktop with audio from pulse and webcam from video4linux2. I will also show how to configure crtmpserver and flowplayer so you can watch the live stream from a web browser. In this scenario I use separate host for the tools. Flowplayer is installed on a server running Apache, crtmp server is on a separate server and ffmpeg is installed on the streaming desktop. read more...
permapage | score:9703 | -falko, June 19, 2012

Epoptes – Open source computer lab management and monitoring tool

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Epoptes is an open source computer lab management and monitoring tool. It allows for screen broadcasting and monitoring,remote command execution, message sending, imposing restrictions like screen locking or sound muting the clients and much more! read more...
permapage | score:9703 | -gg234, August 16, 2013

Dual-boot Windows 7 and Ubuntu 12.04 on a PC with UEFI board, SSD and HDD

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That was a lengthy introduction, but it was necessary. Here is a condensed version: Get a UEFI system with an SSD and an HDD. Install Windows 7 on the SSD. Set the boot device to the HDD. Install Ubuntu 12.04 on the HDD. Reboot. Select Windows 7 or Ubuntu from GRUB’s menu. Have a fun computing. read more...
permapage | score:9701 | -finid, October 11, 2012

Pipelight – Using Silverlight in Linux browsers

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Pipelight, which allows to run your favorite Silverlight application directly inside your Linux browser. The project combines the effort by Erich E. Hoover with a new browser plugin that embeds Silverlight directly in any Linux browser supporting the Netscape Plugin API. He worked on a set of Wine patches to get Playready DRM protected content working inside Wine and afterwards created an Ubuntu package called Netflix Desktop. This package allows one to use Silverlight inside a Windows version of Firefox, which works as a temporary solution but is not really user-friendly and moreover requires Wine to translate all API calls of the browser. To solve this problem we created Pipelight. read more...
mail this link | permapage | score:9695 | -gg234, September 6, 2013

Install openQRM 5.1 on Debian 7

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This HowTo is about how to install the openQRM Datacenter Management and Cloud Computing platform version 5.1 on Debian 7 aka Wheezy. It is the starting point for a set of openQRM HowTos explaining different Use-cases with the focus on virtualization, automation and cloud computing. read more...
permapage | score:9674 | -falko, August 16, 2013

CoolShip Android all-in-keyboard computer

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But this one is unlike other Android units. It’s not in a USB stick, but in a keyboard with most of the connectivity of a standard desktop or notebook computer. read more...
permapage | score:9672 | -finid, February 26, 2013

Linux mail command examples: send mails from command line

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This tutorial shows how to send and receive mails from the command line using the mail and mutt commands on linux. read more...
permapage | score:9672 | -Silver Moon, August 28, 2013

Using Multiple PHP Versions (PHP-FPM FastCGI) With ISPConfig 3 (Ubuntu 12.04)

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Since ISPConfig 3.0.5, it is possible to use multiple PHP versions on one server and select the optimal PHP version for a website. This feature works with PHP-FPM (starting with PHP 5.3) and FastCGI (all PHP 5.x versions). This tutorial shows how to build PHP 5.3 and PHP 5.4 as a PHP-FPM and a FastCGI version on an Ubuntu 12.04 server. These PHP versions can be used together with the default PHP (installed through apt) in ISPConfig. read more...
permapage | score:9668 | -falko, March 30, 2013

Sagemath in the Cloud and Sagemath 5.11

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Access to the service is available after a free registration at cloud.sagemath.com. William Stein, a professor of mathematics at the University of Washington, is the principal author of Sage and is also responsible for the hosted service. read more...
permapage | score:9659 | -finid, August 29, 2013

Virtual Users/Domains with Postfix/Courier/MySQL/SquirrelMail (Debian 7)

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This document describes how to install a Postfix mail server that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier, so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota. Passwords are stored in encrypted form in the database. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin, ClamAV, and SquirrelMail. read more...
mail this link | permapage | score:9655 | -falko, July 8, 2013

Upgrade Fedora 18 to 19 With FedUp

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This article describes how you can upgrade your Fedora 18 system to Fedora 19 with the help of the Fedora Updater (FedUp). The upgrade procedure works for both desktop and server installations. read more...
permapage | score:9653 | -falko, July 28, 2013

Ubuntu Edge: Is there life after an unsuccessful crowd-funding campaign?

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The Indiegogo campaign was overly ambitious and missed its target by more than US$19 million. However, it also set the record for the most money raised from a crowd-funding campaign. read more...
permapage | score:9648 | -finid, August 27, 2013

Linux Iptables Examples

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Linux comes with a host based firewall called Netfilter. It is a set of hooks inside the Linux kernel that allows kernel modules to register callback functions with the network stack. A registered callback function is then called back for every packet that traverses the respective hook within the network stack.

This Linux based firewall is controlled by the program called iptables to handles filtering for IPv4, and ip6tables handles filtering for IPv6. This tutorial list most common iptables solutions required by a new Linux user to secure his or her Linux operating system from intruders. read more...
mail this link | permapage | score:9645 | -nixcraft, December 14, 2011
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