Linux System Administration Portal [page 2]

Information for Linux System Administration

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:9826 | -falko, March 30, 2013

ARM-based EMB-2500: Like Raspberry Pi, but much better

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With the EMB-2500, SATA storage connectivity has come to an ITX form-factor, single-board SoC computer. read more...

permapage | score:9812 | -finid, April 30, 2013

Tutorial: Build an Ubuntu 13.04 Server (Apache2, BIND, Dovecot)

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This tutorial shows how to prepare an Ubuntu 13.04 (Raring Ringtail) server (with Apache2, BIND, Dovecot) for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: Apache or nginx web server, Postfix mail server, Courier or Dovecot IMAP/POP3 server, MySQL, BIND or MyDNS nameserver, PureFTPd, SpamAssassin, ClamAV, and many more. This setup covers Apache (instead of nginx), BIND (instead of MyDNS), and Dovecot (instead of Courier). read more...

mail this link | permapage | score:9806 | -falko, April 30, 2013

Tutorial: Ubuntu 13.04 Samba Server with tdbsam

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This tutorial explains the installation of a Samba fileserver on Ubuntu 13.04 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:9801 | -falko, May 2, 2013

Find wasted disk space with the Agedu Unix utility

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agedu scans a directory tree and produces reports about how much disk space is used in each directory and subdirectory, and also how that usage of disk space corresponds to files with last-access times a long time ago.
In other words, agedu is a tool you might use to help you free up disk space. It lets you see which directories are taking up the most space, as du does; but unlike du, it also distinguishes between large collections of data which are still in use and ones which have not been accessed in months or years – for instance, large archives downloaded, unpacked, used once, and never cleaned up. Where du helps you find what's using your disk space, agedu helps you find what's wasting your disk space. read more...

mail this link | permapage | score:9801 | -gg234, May 10, 2013

Install Mplayer and Multimedia codecs on Ubuntu 13.04

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MPlayer is a movie and animation player that supports a wide range of codecs (libdvdcss2, w32codecs, w64codecs) and file formats, including MPEG 1/2/4,DivX 3/4/5, Windows Media 7/8/9, RealAudio/Video up to 9, Quicktime 5/6, and Vivo 1/2. It has many MX/SSE (2)/3Dnow(Ex) optimized native audio and video codecs, but allows using XAnim’s and RealPlayer’s binary codec plugins, and Win32 codec DLLs. It has basic VCD/DVD playback functionality, including DVD subtitles, but supports many text- based subtitle formats too. For video output, nearly every existing interface is supported. It’s also able to convert any supported files to raw/divx/mpeg4 AVI (pcm/mp3 audio), and even video grabbing from V4L devices. read more...

mail this link | permapage | score:9799 | -gg234, April 24, 2013

Lynis: Security and system auditing tool

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Lynis is an auditing tool for Unix (specialists). It scans the system and available software, to detect security issues. Beside security related information it will also scan for general system information, installed packages and configuration mistakes.This software aims in assisting automated auditing, software patch management, vulnerability and malware scanning of Unix based systems. It can be run without prior installation, so inclusion on read only storage is no problem (USB stick, cd/dvd). read more...

mail this link | permapage | score:9796 | -gg234, April 30, 2013

Tutorial: PHP5-FPM with Apache2 on OpenSUSE 12.3

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This tutorial shows how you can install an Apache2 webserver on an OpenSUSE 12.3 server with PHP5 (through PHP-FPM) and MySQL support. PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites. read more...

permapage | score:9790 | -falko, April 28, 2013

Upgrade Ubuntu 12.10 to 13.04

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The new Ubuntu 13.04 (Raring Ringtail) has just been released. This guide shows how you can upgrade your Ubuntu 12.10 desktop and server installations to Ubuntu 13.04. read more...

permapage | score:9784 | -falko, May 1, 2013

Virtual Hosting: Proftpd, MySQL on Ubuntu 12.10

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This document describes how to install a Proftpd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine. In addition to that I will show the use of quota with this setup. This tutorial is based on Ubuntu 12.10. read more...

permapage | score:9781 | -falko, April 24, 2013

Tutorial: Install Nginx, PHP5, PHP-FPM, and MySQL on CentOS 6.4

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Nginx (pronounced "engine x") is a free, open-source, high-performance HTTP server. Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption. This tutorial shows how you can install Nginx on a CentOS 6.4 server with PHP5 support (through PHP-FPM) and MySQL support. read more...

permapage | score:9776 | -falko, April 1, 2013

KVM Virtualization on CentOS 6.4

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This guide explains how you can install and use KVM for creating and running virtual machines on a CentOS 6.4 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V. read more...

permapage | score:9770 | -falko, April 19, 2013

Setting up ProFTPd + TLS on Ubuntu 12.10

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FTP is a very insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure. This article explains how to set up ProFTPd with TLS on an Ubuntu 12.10 server. read more...

permapage | score:9762 | -falko, April 29, 2013

Virtual Users/Domains with Postfix, Courier, MySQL, SquirrelMail (CentOS 6.3)

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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 and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords. read more...

mail this link | permapage | score:9759 | -falko, March 27, 2013

Encrypt your data with EncFS (OpenSUSE 12.3)

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EncFS provides an encrypted filesystem in user-space. It runs without any special permissions and uses the FUSE library and Linux kernel module to provide the filesystem interface. It is a pass-through filesystem, not an encrypted block device, which means it is created on top of an existing filesystem. This tutorial shows how you can use EncFS on OpenSUSE 12.3 to encrypt your data. read more...

permapage | score:9758 | -falko, April 16, 2013

Tutorial: Automatically add a disclaimer to emails with alterMIME (Postfix on Debian 6)

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This tutorial shows how to install and use alterMIME. alterMIME is a tool that can automatically add a disclaimer to emails. In this article I will explain how to install it as a Postfix filter on Debian Squeeze. read more...

permapage | score:9757 | -falko, January 18, 2013

Tutorial: Install Lighttpd, PHP5, MySQL on CentOS 6.4

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Lighttpd is a secure, fast, standards-compliant web server designed for speed-critical environments. This tutorial shows how you can install Lighttpd on a Centos 6.4 server with PHP5 support (through PHP-FPM) and MySQL support. PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites. I use PHP-FPM in this tutorial instead of Lighttpd's spawn-fcgi. read more...

permapage | score:9749 | -falko, April 17, 2013

4 gui applications for installing Linux from USB key

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With this article, four of the best graphical applications that Windows users may use to transfer most actively-developed Linux distributions to a USB key, and, therefore, use it to install the Linux distribution to a computer that does not have an optical drive are presented. read more...

permapage | score:9741 | -finid, April 2, 2013

Tutorial: Install Piwigo Gallery on Nginx (Debian 7)

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This tutorial shows how you can install and run a Piwigo gallery site with nginx, configured for vhosts, on a Debian Wheezy system. Piwigo is a gallery-website with many plugins. In this sample we configure the vhost "gallery.domain.tld". read more...

permapage | score:9735 | -falko, April 20, 2013

Tutorial: Replace Windows with Ubuntu 13.04

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This tutorial shows how you can set up an Ubuntu 13.04 desktop that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge. read more...

permapage | score:9733 | -falko, May 5, 2013

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