Featured »

March 2, 2022 – 2:00 pm

Books have been written on the subject of awk and sed. Here’s a small sample of commands I put together over the years that are useful for everyday system administration tasks. Most of these tasks …

Read the full story »
Networking

Unix and Linux network configuration. Multiple network interfaces. Bridged NICs. High-availability network configurations.

Applications

Reviews of latest Unix and Linux software. Helpful tips for application support admins. Automating application support.

Data

Disk partitioning, filesystems, directories, and files. Volume management, logical volumes, HA filesystems. Backups and disaster recovery.

Monitoring

Distributed server monitoring. Server performance and capacity planning. Monitoring applications, network status and user activity.

Commands & Shells

Cool Unix shell commands and options. Command-line tools and application. Things every Unix sysadmin needs to know.

Home » Archive by Month

Article Archive for June 2008

Best of Web Design

June 24, 2008 – 2:41 pm

As more Web surfers get high-speed access, Web designers are tempted to go overboard with multimedia sites that waste your time and distract you from the content. This little collection of Web designs is proof …

Random Filename Chooser

June 17, 2008 – 9:02 pm
lock code

This is a rather peculiar little script with a purpose that may not be immediately apparent. The script will look for files in the specified folder; it will then pick one at random from the …

WordPress Quick Upgrade for Linux

June 13, 2008 – 6:22 pm
wordpress_0003

Never ever upgrade WordPress to the latest version as soon as it comes out, unless you want to be the guinea pig dealing with the new bugs and incompatible plugins. Even if the new version …

Linksys WAP54G Secure Configuration

June 11, 2008 – 1:09 pm
wireless access point ap

Below are some basic steps to secure a wireless access point (WAP). The screenshots are for Linksys WAP54G v. 3.04, however, the same steps will apply to wireless access points from other manufacturers. Understand this: …

Apache and Multiple Domains – from Home

June 10, 2008 – 5:15 pm
apache

Apparently there are folks out there who are still interested in running their own Web server from home. More than that – they want to have multiple domains. Guys, Web hosting these days is so …

Data Security and Online Privacy

June 9, 2008 – 4:57 pm
computer_security_0005

You have information on your computer that you don’t want others to see. Sometimes you want to share information with someone, but you don’t want anyone to know that you are the one sharing it. Let’s say that you came across some information suggesting that your employer may be breaking law. You want to make this information public, but you can’t do it openly becausloe you will be fired. Another example: you are at work and you need to send a personal, confidential email…

Scali Manage (Platform Manager) CLI Guide

June 5, 2008 – 10:24 pm
trash

Scali Manage – the bloated and unpredictable HPC cluster management tool – has recently been acquired by Platform Computing Corp. It is to be integrated into Platform LSF and Platform OCS products. I can’t say …

Dealing With Disk Hogs

June 1, 2008 – 5:49 pm
hard_disk_drive_hdd_0005

Some users and application developers believe that any free disk space on the server belongs to them. Suddenly you get an email alert saying that a server “xyz” ran out of disk space in /home. …

Useful SysAdmin Scripts: Search-and-Replace

June 1, 2008 – 3:03 pm
binoculars watch security rifle gun

Let’s say you moved your server to a new network and now it has a different IP address. You know your users have a habit of hard-coding the server’s IP into their scripts. So you …