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5 changed files with 41 additions and 72 deletions
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@ -5,14 +5,15 @@ slug: about
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---
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By day I'm a Site Reliability Engineer on the Fleet Automation team at
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By day I'm a Site Reliability Engineer on the Cluster Operations team at
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[Dropbox](https://dropbox.com), where I help provide the tools and services to
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automate our datacenters, things such as server provisioning, OS installation,
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server repair validation, asset management, etc.
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automate our datacenters, things such as server provisioning, serve repair
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validation, asset management, etc.
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Outside of work I'm usually found riding bikes (sometimes for long distances
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carrying camping gear), wrenching on bikes, playing around with ham radio,
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drinking too much coffee, or writing code to support my hobbies.
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carrying camping gear), wrenching on bikes, drinking too much coffee, drinking
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not-too-much beer, brewing the former two, or writing code to support my
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hobbies.
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I'm a huge proponent of free open-source software and maintaining control of
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your data.
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@ -43,6 +43,11 @@ Links: [Project page](/cpu-usage-meter/), [Linux source](/media/projects/cpu_met
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LEDs on the front of my computer case displaying the CPU load.
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### Serial IR Receiver (2006)
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Links: [Project page](/ir-receiver/)
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A simple serial-based LIRC-compatible IR reciever.
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### ServCheck (PHP)
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Links: [servCheck.tar.gz](/media/projects/servCheck.tar.gz)
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@ -50,3 +55,19 @@ A simple service checker written in PHP. Attempts to open a socket with the
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configured hosts and ports, and outputs an HTML file showing which services
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are up and down. I originally wrote this for the TerminalUnix site to show what's
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working and what isn't.
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### TerminalUnix (PHP)
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A PHP and MySQL driven site, functioning as a web front-end and community site for
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the TerminalUnix server. I started it because I was sick of all of these Content
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Management Systems having features that I didn't want. I sat down during Spring Break
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of 2006 and coded a PHP login system, not knowing about the wonders of some of the PHP
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features. Eventually I coded nice things in such as MySQL access (instead of a flat
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text file), a user adminstration system, and even a news sytem.
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Unfortunately I don't plan on releasing the source code since it's a big hard-coded mess.
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### N-Queens solver (C++)
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Links: [nqueens.tar.gz](/media/projects/nqueens.tar.gz)
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Another Data Structures homework assignment. This solves (brute-forces) the
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[N-Queens Problem](https://www.google.com/search?q=n-queens+problem) using recursion and backtracking.
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@ -41,7 +41,7 @@ ACTION=="remove", \
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```
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The VENDOR_ID and MODEL_ID can be found by running the `lsusb` command, which
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shows this as "ID vendor_id:model_id", for example "ID 6b62:6869".
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shows this as "ID <vendor id>:<model id>", for example "ID 6b62:6869".
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And of course, here's the script `/usr/local/bin/kvm-udev` which takes care of
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the auto-connecting. It takes two parameters, first either being "attach" or
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@ -1,58 +0,0 @@
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date: 2022-07-11
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title: 'Cheating at Wordle with grep'
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tags:
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- linux
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---
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I usually try to make a good effort at
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[Wordle](https://www.nytimes.com/games/wordle/index.html), but sometimes I get
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down to the last one or two chances and need some help. Instead of anything
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fancy-pants, I usually turn to a dictionary file and my friend, `grep`.
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So, first thing's first, you need a dictionary file, which is just a file with
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a bunch of words one-per-line. These are usually found in `/usr/share/dict`. I
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happen to have `cracklib-small` on my machine so we'll use that.
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First, you'll want to get all the five-letter words out of the file. I use the
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regex `^\w{5}$`, which is `^` for the start of the line, `\w` for an
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alphanumeric character, `{5}` saying that there are 5 of them, and `$` for the
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end of the line. The beginning and end of line markers are important, otherwise
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you'll get words that contain 5 or more letters.
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```
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grep -E '^\w{5}$' /usr/share/dict/cracklib-small
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```
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At this point, I've already made some guesses and have a few letters in the
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right spot, and some letters which are correct but in the wrong spot. We'll
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bucket these into two `grep`s.
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For letters in the right spot, I stick those right into a regex. For example,
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let's say I know the word starts with 'f' and 'a':
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```
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grep -E 'fa\w\w\w'
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```
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For the right letters in the wrong spot, I simply use the letter as the regex.
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If I have multiple letters, I can chain those together by piping grep like so:
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```
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grep s | grep t
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```
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So chaining them all together:
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```
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$ grep -E '^\w{5}$' /usr/share/dict/cracklib-small \
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| grep -e 'fa\w\w\w' \
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| grep s | grep t
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facts
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fasts
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fates
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faust
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```
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You could eliminate words that have letters you've already eliminiated by
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chaining `grep -v <letter>` to the end, but I find that pretty cumbersome.
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There's only a handful of possible words at this point, so I think it's easier
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to just remove them in my head.
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@ -16,8 +16,6 @@
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<link rel="stylesheet" href="{{ "css/font-awesome.css" | media_url }}" />
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<link rel="stylesheet" href="{{ "css/index.css" | media_url }}" />
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<script defer src="https://webstats.nickpegg.com/script.js" data-website-id="45f9e233-7863-478e-bbf1-39393bbde614"></script>
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</head>
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<body>
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<div class="page-header">
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@ -47,11 +45,6 @@
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</li>
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{% endif %}
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{% endfor %}
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<li>
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<a href="https://wiki.nickpegg.com">
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Wiki
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</a>
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</li>
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<li>
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<a href="/rss.xml">
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<i class="fa fa-rss-square"></i>
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@ -69,11 +62,23 @@
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</a>
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</li>
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<li>
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<a rel="me" href="https://sfba.social/@nickpegg">
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<a href="https://mastodon.social/@nickpegg">
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<i class="fa fa-comments"></i>
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Mastodon
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</a>
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</li>
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<!--<li>
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<a href="https://instagram.com/nickpegg0">
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<i class="fa fa-instagram"></i>
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Instagram
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</a>
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</li>-->
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<li>
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<a href="https://twitter.com/nickpegg">
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<i class="fa fa-twitter-square"></i>
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Twitter
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</a>
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</li>
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<li>
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<a href="https://linkedin.com/in/nick-pegg">
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<i class="fa fa-linkedin-square"></i>
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