alifeee

#!/bin/bash
# make bar chart from $prog, $total, $n_seg as $1 $2 $3
# example:
# > ./bar.sh 25 100 12
# ███░░░░░░░░░

bar () {
    # $1 $2 $3 are progress total total_segments
    # shows progress/total using total_segments characters
    if [ $1 == "0" ] && [ $2 == "0" ]; then

alifeee

#!/bin/bash
# script to remove stylesheets, style tags, and inline styles from an HTML file
# 1. remove <link rel="stylesheet" ...>
# 2. remove <style> ... </style>
# 3. remove style="..." attributes
# notes:
#   perl "0777" is so that perl sees newlines as "any character" (so <link> can wrap onto new lines)
#   "|gms" helps with the same thing. see https://regex101.com/
# example:
#   ./naked.sh index.html > index-naked.html

alifeee

FFmpeg Commands

see video information

# see all information
ffmpeg -i input.mp4
# format resolution nicely
ffprobe -v error -select_streams v:0 -show_entries stream=width,height -of csv=s=x:p=0 input.mp4

alifeee

Using Ruby on Linux

Install Ruby + Gems

sudo apt-get install ruby-full
gem install bundler
bundle config set --local path 'vendor/bundle'
bundle install

alifeee

Bash Graphs

• Line graphs 📈📉
• Bar graphs 📊

Line Graphs

Plot graphs using the terminal. E.g.,

alifeee

#!/bin/bash
# converts a font (.woff) filename to a CSS @font-face and class-selector based on filename
# example:
#  ./filename_to_css.sh "path/to/my-font.woff"
# with multiple files
#  find path/to/fonts -name "*.woff" -exec ./filename_to_css.sh {} \;

# get name from regex match
name_regex='\/([^\/]*)\.woff$'
if [[ $1 =~ $name_regex ]]; then

alifeee

#!/bin/bash
# convert a Gimp colour palette (.gpl) to a list of CSS variables
# example:
#   ./gpl-to-css.sh my-palette.gpl > my-palette.css
# converts
# ----- my-palette.gpl -----
# GIMP Palette
# Name: My Palette
# Columns: 3
# 255 0 0 Red

alifeee

#!/bin/bash
# combines SquareSpace RSS feeds
# Squarespace default feed (e.g., https://www.treehousesheffield.com/events?format=rss) only returns the current month
# This script fetches the current month and the next two months and combines them into a single RSS feed
# The script is intended to be run as a cron job
# It should work for any SquareSpace site (assuming they use the same query variable format)
# usage e.g.,
#  ./combinerss.sh https://www.treehousesheffield.com/events?format=rss > /var/www/html/treehousesheffield.com/events.rss

# get today month and year

alifeee

How to run things as a service on Ubuntu

I run things on my server. I'd like to run them in the background, so they restart when the server restarts.

I was running them "in the background" with tmux, which I had to set up again every time the server restarted. This was annoying. So, here I run them as a service.

I had a vague knowledge of services, because some things I use are one, like nginx and murmur for mumble.

Firstly

alifeee

Common RSS URL extensions

I like blogs. I like RSS feeds. Often, blogs don't have an RSS feed link. Often, these blogs do have an RSS feed, thanks to whatever site generator they use.

Thus, I like to try and find the hidden feed. These are the URLs I usually put on the URL to try and find the feed.

For example, blog.alifeee.co.uk -> blog.alifeee.co.uk/feed.xml

/feed