sloanlance

yq Notebook

Useful notes about using yq

1. Display the path to each value in a YAML file

   $ cat << EOF | yq e '.. | select(. == "*") | {(path | join(".")): .} ' -
   > a:
   >   b: foo

> c: bar

sloanlance

#!/bin/sh --

# Set timestamps of files in a cloned git repository to when they were last committed.

# Default: All git-controlled files in current directory, recursively 
if [ ${#} = 0 ]; then
  files="$(git ls-files -z | xargs -0 echo)"
else
  files="${@}"
fi

sloanlance

import boto3
import os
from contextlib import closing
from botocore.exceptions import ClientError


def object_exists(s3, bucket, key):
    try:
        boto3.resource('s3').Object(bucket, key).load()
        return True

sloanlance

#!/bin/sh --

# Toggle macOS Background Sounds on or off.
#
# See the System Settings panel for Accessibility > Audio to change settings
# like the sound played, volume level, and automatic stop.

# `read` returns an integer, but…
if [ $(defaults read com.apple.ComfortSounds 'comfortSoundsEnabled') = 0 ]
then

sloanlance

#!/bin/sh
awk 'function wl() {
        rate=64000;
        return (rate/160)*(0.87055^(int(rand()*10)))};
    BEGIN {
        srand();
        wla=wl();
        while(1) {
            wlb=wla;
            wla=wl();

sloanlance

def recursiveFormat(args, **kwargs):
    """
    Recursively apply `string.format()` to all strings in a data structure.

    This is intended to be used on a data structure that may contain
    format strings just before it is passed to `json.dump()` or `dumps()`.
    
    Ideally, I'd like to build this into a subclass of `json.JsonEncoder`,
    but it's tricky to separate out string handling in that class.  I'll
    continue to think about it.

sloanlance

#!/bin/sh --

# Get the local ngrok public URL, which includes the hostname, extracted using jq
# Inspiration: https://gist.github.com/rjz/af40158c529d7c407420fc0de490758b#gistcomment-2594627

curl --silent http://127.0.0.1:4040/api/tunnels | jq -r '.tunnels[0].public_url'

sloanlance

import re
from functools import reduce
import string

def durationToSecondsRegex(duration: str) -> int:
    """
    Parse duration string; return integer number of seconds.

    For example, the duration string "1h2m3s" (1 hour, 2 minutes, 3 seconds)
    would return 3723 seconds.

sloanlance

0 REM "THREE REASONS TO OWN A COMPUTER" FOR COMMODORE 64
1 REM FROM COMPUTE!'S GAZETTE
10 FORL=54272 TO 54295:POKEL,0:NEXT:POKE54296,15 
20 POKE54277,8:POKE54278,255:POKE54276,23 
30 F2=4 
40 FORZ=1TO3:POKE54287,F2 
50 FORF1=1TO200 
60 POKE54273,F1:F2=F2+.01:NEXTF1:NEXTZ:POKE54278,15 

sloanlance

# From Stack Overflow question:
# https://stackoverflow.com/questions/26216563/how-to-do-encapsulation-in-python
#
# Python has simple encapsulation, but it doesn't strictly enforce access to
# protected or private class members.  This is one person's attempt to
# address that in a (misleadingly named) class.
#
# Could this be done with introspection rather than using on `self.privates` and 
# `self.protected`? Follow the common Python style of naming variables `__a` and `_b`.
# Then the methods would check whether the names begin with `__` or `_` to allow or