The following monster will parse the mail log and report on unique host connections along with a count.
cat /var/log/mail.log | \
grep ' connect from unknown' | \
awk '{ print $8 }' | \
sort | \
sed -n 's/.*\[\([0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\)\].*/\1/p' | \
awk '{count[$1]++} END {for (word in count) print count[word], word}' | \
sort -n
I finally got around to reading about YAML at Wikipedia. Worth doing if you use YAML anywhere and haven’t read the YAML page yet.
The Wikipedia article links to the official website: yaml.org, which is good fun. It’s written in YAML! :D
If you’re interested in data formats and markup languages here’s some other reading on the subject:
This guy, Cathode Ray Dude [CRD], does some fun stuff. He’s on the web via HTTPS at gekk.info and HTTP at www.cathoderaydude.com.
I have an item on my TODO list to make a program to convert text into Title Case. On a whim, I asked ChatGPT to do this for me, and it did! ChatGPT is automating me out of work!
This post is part of my video blog and you can find more information about this video on this show’s homepage which is here.
You can support this channel on Patreon: patreon.com/JohnElliotV
In this video I solder three different sized bodge wires onto some perfboard for practice and for the purpose of exposition. After attaching the three bodge wires I cover them with UV solder mask.
If you haven’t heard of the expression “bodge wire” before, ChatGPT will explain.
I want to thank my mate Bruce from Branchus Creations for recommending the enameled wire of various sizes, the Swann Morton blades, and the Amtech flux.
I got three rolls of this enameled copper wire from AliExpress:
The diameters of the various rolls I got were:
| Size | mm | inches |
|---|---|---|
| Small | 0.07mm | 0.003″ |
| Medium | 0.16mm | 0.006″ |
| Large | 0.31mm | 0.012″ |
I got the “coppery” colour, not the red stuff.
The Swann Morton blade handles I got were these:
I got three types of blades in #15C, #15, and #10 sizes:
The #15C Swann Morton blade is the smallest and is so far my favourite. The #15C is the blade I use in this video.
My flux is:
The industrial/precision tweezers I mention in the video are these:
The solder lugs I refer to are these:
The perfboard I used in this video was a 2x8cm board which I picked up from AliExpress:
I use two microscopes in this video:
In the video I reference my thermal imager:
My gloves are:
My head-mounted magnifying glasses are:
The soldering iron I use in this video is a part of my Horusdy soldering station:
My desoldering pump came in this kit:
The solder mask I ordered was this green stuff, but the stuff they actually sent me was red:
The solder I use in this video is:
My paint brush is the 5/0 sized brush from this set:
The blow torch I mention in this video is this one:
My Kapton tape and tape dispenser are these:
The bench multimeter I use in the video is a:
The isopropyl (IPA) alcohol I use in this video is this stuff:
Thanks very much for watching! And please remember to hit like and subscribe!
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
Amazon Basics Ratchet Screwdriver notes |
Let’s go shopping!
I was watching Computers running very slow, long boot time, unresponsive in windows. Let’s fix it. and Richard said that if your CMOS battery reads less than 3V then you should replace it.
I found a good video that shows how to crimp a JST PHD connector: JST Connector Crimping. When crimping these JST connectors I use my ENGINEER PA-09 crimping tool. I use a 1.4mm crimp for the wire and a 1.9mm crimp for the insulation.
Have been researching Xbox DVD capacitors.
In Electrolytic Capacitor Removal NO Desoldering Required Paul Carlson says he uses lacquer thinner to clean circuit boards. On the Wikipedia article for Lacquer thinner it says these are usually mostly acetone. Personally I would only crack out the acetone if the IPA wasn’t working for me. Acetone is serious business.
I was watching How To TEST OP AMPS Using A Multimeter vs Op-Amp Tester Project Single Dual and I learned about this Operational Amplifier OP AMP Tester For Single Dual OPAMP TL071 TL072 TL081 TL082 Single/Dual Op Amp Test Board.
I have to cool it on the spending for a little while, but I’ve made a note of this on my shopping list.