If you're using the plugin Prismatic to apply highlight.js to your code excerpts, but you want it to also affect inline <code> tags (i.e. those not wrapped in <pre> blocks), simply go Settings > Prismatic > Highlight.js and paste this monster into the “Init Script” field: // This init script was written by James E.…
Parsing the HTTP "Date" header in Python
As per RFC 7231 §7.1.1.1: A recipient that parses a timestamp value in an HTTP header field MUST accept all three HTTP-date formats. These formats are then described as (with the first being the only preferred format; the latter 2 are designated as "obsolete"), converted for this post into strftime(3) syntax: %a, %d %b %Y…
Python: Using "with" with sqlite3 cursor
If you like the assurance that Python's with statement provides, but can't figure out how to properly apply it to individual cursor objects, here's how to do that: import sqlite3 from contextlib import closing con = sqlite3.connect('example.db') with con, closing(con.cursor()) as cur: cur.execute(…)
Basic JS Async Cookbook
// aXMLHttpRequest: an asynchronous XHR function function aXMLHttpRequest(method, location, responseType="", body=undefined) { // somewhat basic; improvements welcome return new Promise( (resolve, reject) => { const xhr = new XMLHttpRequest(); xhr.open(method, location); xhr.responseType = responseType; xhr.onload = resolve; xhr.onerror = reject; xhr.send(body); return xhr; }); } // asleep: an asynchronous sleep function asleep = (delay =>…
Quick setup: Fail2ban on CentOS 8
Instant, easy setup. Just 3 commands, and your server will be protected: dnf install fail2ban nano /etc/fail2ban/jail.local Paste this: [sshd] enabled = true systemctl restart fail2ban
[WIP] Namecheap let's encrypt
First, go to cPanel's SSL/TLS, Private Keys, View. Note the ID of your TLS key; copy it to your clipboard or something. (Be careful not to grab any extraneous spaces or anything; triple-clicking to select the whole line did work for me, but just be sure you're paying attention.) Then, go to cPanel's Terminal and…
Python: "with epoll"
If you're using Python 3.4+, select.epoll already supports context — you're clear to just write with epoll() as E: … and everything will be OK. If not, here's how to shim it:
JS: Tail-call optimized recursive setTimeout
If you're writing some code on a time-delayed-loop in JavaScript, there are 2 main options: setInterval setTimeout, recursively However, each has a potential downside: setInterval schedules the code to run at the given interval, regardless of whether the last invocation has completed. This means that, if the function takes longer than the delay to execute,…
Docker: remove all containers and images
docker rm -f `docker container ls -a -q` && docker rmi -f `docker image ls -a -q`
Installing NGINX on CentOS 8
Installing NGINX on RHEL-spectrum systems, from the official repo http://nginx.org/packages/${distro}/${distrorel}/${arch}