iTerm2 Tip: Repeating Commands Using a Coprocess
iTerm2 is a great terminal for MacOS; far better than Apple’s built-in Terminal app, and it’s my #1 recommendation for Mac-based network engineers. One of the many reasons I like it is that it has […]
Tips
Task List Tracker for the Mac (DIY Version)
As a Mac user, how do you keep track of the tasks you need to complete? I find myself swamped in things that need doing and every day more things get added to my list. […]
Traceroute Lies! A Typical Misinterpretation Of Output
Sometimes a user with performance issues will proudly present me with a traceroute and point to a particular hop in the network and accuse it of being the problem because of high latency on the […]
Making a Clickable HTML Network Diagram using OmniGraffle
As a Mac user, I have to give my diagramming love to OmniGraffle and I try not to envy the Visio users too much. I maintain that Graffle diagrams subjectively look nicer than Visio, but […]
TIP: How To Do MD5 and SHA1 File Checksum Validation
It’s always a good idea to calculate an MD5 or SHA1 file checksum to validate file integrity after download or transfer, especially when dealing with firmware binaries. While most modern systems are smart enough to […]
Five Essential OpenSSL Troubleshooting Commands
Troubleshooting SSL certificates and connections? Here are five handy openssl commands that every network engineer should be able to use. Bookmark this – you never know when it will come in handy! 1. Check the […]