A repository of information technology questions and answers

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AWS Terminology

5 minute read    1349 visits.

Confused by Amazon Web Services? Learning all of the terminology is a great way to become acquainted with it.

Cloud Computing in a nutshell

5 minute read    2822 visits.

A practice of using a network of remote servers on the Internet to store, manage, and process data, rather than a local server or personal computer.

Hard drive sanitisation - A homebrew approach

7 minute read    3997 visits.

The most efficient means of sanitising computers and/or a storage media device is to overwrite the entire device with zeroes or with a random pattern.

Nibbleblog plugin: Visitor Stats

1 minute read    3340 visits.

This plugin shows the number of visitors currently online, how many have visited today, yesterday, this week, this month, this year, and total visits.

Converting Nibbleblog .htaccess to IIS

11 minute read    3006 visits.

This post gives an example how to convert the .htaccess file provided with Nibbleblog when SEO is enabled into the equivalent IIS web.conf file.

World Backup Day 2014

1 minute read    2726 visits.

Until you need them, backups are a boring irritating waste of time. But when you need them, they can be an absolute life saver.

Testing ping with jumbo frames

1 minute read    3647 visits.

Depending on the OS you are running determinas which command and options to use in your testing.

DNS lookup process

1 minute read    2071 visits.

When a name query from a client computer cannot be resolved locally, DNS servers can be queried as needed to resolve the name.

Types of DNS Records

11 minute read    2129 visits.

This list of DNS record types is an overview of resource records (RRs) permissible in zone files of the Domain Name System (DNS).

Installing BMC Patrol Agent 9.5

1 minute read    2842 visits.

This topic describes how to perform a first-time installation of the BMC patrol agent, which includes the system collectors and service daemon.

Setting up BMC event log file and size

1 minute read    2816 visits.

When the cache becomes full, events are removed from it and placed in the repository file, which uses the following naming convention

Event log for BMC Patrol 9.5

1 minute read    3410 visits.

As new events are created, older events are written to a log file called the PEM log.

Sun Serial number locations

7 minute read    3222 visits.

A simple table which provides a listing of where to locate the serial number on various Sun related products.

Turn On/Off Apache Directory Listing

1 minute read    2526 visits.

To enable the directory browsing in Apache server, we need to add the directory option in apache configuration file.

GIT vs SVN

1 minute read    2836 visits.

This is a simple post which lists the basic equivalent commands for both git and svn version control systems.

Virtualisation products compared

1 minute read    3292 visits.

The 3 major players, at the moment, in the virtualisation market are VMware, Microsoft and Citrix.

Introduction to Virtualisation

2 minute read    2875 visits.

When starting off in virtualisation you can use products such as MS Virtual server or VMware workstation/server.

Less is More, or is it Most?

1 minute read    2823 visits.

The standard pager in Solaris is more, the standard pager in Linux is less, so is less more or most

Cluster Cheat Sheet

1 minute read    3365 visits.

This cheat sheet contains common commands and resources for Sun Cluster, Veritas VCS, IBM HACMP, Redhat-HA and HP ServiceGuard cluster environments.

xargs examples

5 minute read    3000 visits.

xargs command are unlike most other Unix commands in that its function is not so much to do something on its own, but to construct other commands

Allocating Sufficient Swap Space

1 minute read    2774 visits.

If the system needs more memory resources and the RAM is full, inactive pages in memory are moved to the swap space.

#man RTFM

3 minute read    3541 visits.

RTFM is often used as a response to technical questions. Unfortunately, some folks do not even know how to find the manual, let alone understand it.

How to bypass BIOS Passwords

7 minute read    2867 visits.

BIOS passwords are used to either prevent a user from changing the BIOS settings or to prevent the PC from booting without a password

Text file end-of-line termination

2 minute read    2743 visits.

Solaris and Linux use only a new-line character. Windows based systems use both a new-line and a carriage return

Subnet Mask and Subnetting

3 minute read    2875 visits.

Subnetting gives you the possibility to organize your hosts into logical groups, configuration that improves the network security and performance.

IP Address overview

3 minute read    2051 visits.

What's an IP address? In short an IP address is the short expression used for Internet Protocol (IP) address.

CRONTAB Quick Reference Guide

3 minute read    2830 visits.

A Solaris utility that allows tasks to be scheduled at regular intervals via the cron daemon. The crontab is the file containing the scheduled tasks.

emacs Quick Reference Guide

1 minute read    2690 visits.

Emacs commands are accompanied either by simultaneously holding down the control key or by first hitting the escape key.

vi Quick Reference Guide

2 minute read    3245 visits.

All commands in vi are preceded by pressing the escape key. Each time a different command is to be entered, the escape key needs to be used.