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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 …

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Awesome Shell

December 24, 2016 – 3:52 pm

An excellent collection of programs and scripts to extend your shell’s capabilities.

Razer Mechanical Keyboard Case

August 21, 2016 – 1:15 pm

A really cool mechanical keyboard case for iPad Pro by Razer. Almost makes me wanna get the iPad, just so i can get this keyboard.

A tcpdump Primer with Examples

June 10, 2016 – 11:15 am
network switch

“A tcpdump Primer with Examples”
A good overview of tcpdump functionality and syntax, complete with basic and advanced examples.

Avoiding CPU Speed Scaling

May 18, 2016 – 1:04 pm

Disabling CPU speed scaling can boost your system’s performance and responsiveness at a slightly higher power consumption. Here’s a good article explaining the process.

Top 30 Nmap Command Examples For Sys/Network Admins

May 11, 2016 – 2:39 pm

Useful nmap examples for system and network administrators.

How to: Linux Iptables block common attacks

May 10, 2016 – 2:37 pm

IPTables filters and other tricks to prevent common syn-flood and malformed packet attacks on your server.

Avoid IP Spoofing And Bad Addresses Attacks

May 9, 2016 – 2:01 pm

Spoofing and bad address attacks attemptĀ to fool the server into believingĀ packets had come from local network. Here’s a brief explanation and a useful script that uses IPTables to prevent such exploits.