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Linux

The Serial Console

Post date: April 14, 2005, 13:04 Category: Hardware Views: 3908 Comments
Tutorial quote: In these modern times, a hardworking admin might be tempted to turn her back on the Old Ways, and indulge in increasingly exotic methods of interfacing with servers: SSH over ethernet, USB, Firewire, wireless, infrared, KVM switches, VNC, VPN... next stop: direct neural implants.

There's one old timer that still has useful place in the admin's tool kit: the serial console. Sure, it's slow and funky. But there are times it can be a real lifesaver. When nothing else works, it's a direct pipeline into your system. It's simple and cheap. You don't need to install drivers or expansion cards, it's just there.

Administration via serial console is common in data centers. Just imagine the nightmare of trying to connect all those rack units to keyboards and displays. The cabling can be extended to a nice comfortable ops center (well, an ops center, anyway). (This Lantronix Console Manager is an example of the type of device used to administer these.)

There are a number of ways to make the physical connection. You can connect an external modem--the kind us old timers fondly refer to as "real" modems--and do remote administration via dialup. It couldn't be any simpler, just dial direct. Or grab a null modem cable, connect to a laptop or a nearby workstation, and you have an instant terminal.
Ubuntu

List of Email Clients Available in Ubuntu Linux

Post date: August 28, 2008, 17:08 Category: Software Views: 3849 Comments
Tutorial quote: An e-mail client, aka Mail User Agent (MUA), aka e-mail reader is a front end computer program used to manage e-mail.

Debian

Installation of Tacacs+, Rancid, Cvsweb

Post date: August 16, 2006, 16:08 Category: Network Views: 12322 Comments
Tutorial quote: This article will describe you how to install a complete solution to manage users that have access to your network devices and also how to backup your network devices configurations with a cvs based storage in order to have diffs on it. You'll also be able to script commands you want to run on your routers/switches to have easier administration.
Ubuntu

How To Install VMware Server On A Ubuntu 6.06 LTS (Dapper Drake) System

Post date: July 16, 2006, 16:07 Category: Software Views: 3984 Comments
Tutorial quote: This tutorial provides step-by-step instructions on how to install the free VMware Server (version 1.0.0) on a Ubuntu 6.06 LTS (Dapper Drake) system.

VMware has just released version 1.0.0 of its free VMware Server. With VMware Server you can create and run guest operating systems ("virtual machines") such as Linux, Windows, FreeBSD, etc. under a host operating system. This has the benefit that you can run multiple operating systems on the same hardware which saves a lot of money, and you can move virtual machines from one VMware Server to the next one (or to a system that has the VMware Player which is also free). In this article we use Ubuntu 6.06 LTS (Dapper Drake) as the host operating system.

I want to say first that this is not the only way of setting up such a system. There are many ways of achieving this goal but this is the way I take. I do not issue any guarantee that this will work for you!
Linux

The PartImage Handbook

Post date: May 21, 2005, 15:05 Category: Software Views: 3146 Comments
Tutorial quote: - Partition Image is a Linux/UNIX partition imaging utility: it saves partitions formatted using the Ext2FS (the linux standard), ReiserFS (a new journaled and powerful file system), JFS IBM journaled file systems from AIX, NTFS (Windows NT File System), FAT16/32 (DOS & Windows file systems), or HPFS (OS/2 file system) file system formats to an image file. Only used blocks are copied. The image file can be compressed in the GZIP/BZIP2 formats to save disk space, and split into multiple files to be copied on removable media (ZIP for example), or burned on a CD-R ...

- This allows the user to save a full Linux/Windows system, with a single operation. When problems occur (viruses, crash, error, ...), you just have to restore, and after several minutes, all your system is restored (boot, files, ...), and fully working.

- This is very useful when installing the same software on many machines: just install one of them, create an image, and then restore the image on all other machines. After the first one, each subsequent installation can be made automaticaly, and only requires a few minutes.
Ubuntu

Install Firefox 3.6 Beta1Pre In Ubuntu

Post date: October 8, 2009, 11:10 Category: Software Views: 3967 Comments
Tutorial quote: I was telling you about my issues with scrolling in Firefox (see #6). Well, I didn't manage to fix that for Firefox 3.5 but instead, I installed Firefox 3.6 beta 1 pre (Namoroka) and the scrolling now works perfectly (thanks to Tinhed for the tip!). Also, basically everything feels a lot faster, at least in Ubuntu. This is why I suggest you upgrade to Firefox 3.6.
Gentoo

EVMS Howto for Gentoo Linux

Post date: April 15, 2005, 04:04 Category: Hardware Views: 5328 Comments
Tutorial quote: EVMS stands for Enterprise Volume Management System. It's a all-in-one utility written by IBM to manage disk partitions, logical volumes, software RAID and even filesystems.

It does everything from installing the partition table to mounting volumes, fscking and resizing them. It has a plugin mechanism which allow a user to extend EVMS with external drivers.
Debian

Create virtual Machines Using Virtualbox in Debian

Post date: February 13, 2007, 18:02 Category: Software Views: 4297 Comments
Tutorial quote: VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software.
Ubuntu

Installing DSpace 1.5 on Ubuntu 8.10/9.04 Server

Post date: October 7, 2009, 14:10 Category: Software Views: 4717 Comments
Tutorial quote: Installing Dspace -1.5 on Ubuntu. Dspace is a web-based application to manage your e-papers, files, videos, etc

DSpace open source software enables open sharing of content that spans organizations, continents and time.
Linux

Monitor Network data transfer using Vnstat

Post date: October 28, 2008, 05:10 Category: Network Views: 5138 Comments
Tutorial quote: If you want to monitor and manage your Internet bandwidth, perhaps to make sure your ISP is not overbilling you, try vnStat, an open source, Linux-based application that gives you a clear picture of your bandwidth usage. This utility got the command-line options and also got the UI part which give the output in form of a graph and is simple to install and easy to use.
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