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sloanlance

Gist title: "BASH: ISO 8601 Timestamp with Milliseconds"

Summary: How to get an ISO 8601 timestamp with milliseconds in BASH

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jq: JSONL ↔︎ JSON conversion

Prerequisites

• jq — https://jqlang.github.io/jq/ — "like sed for JSON data"

  There are several options available for installing jq. I prefer to use Homebrew: brew install jq

1. JSONL → JSON

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jq: JSONL → TSV conversion

What is TSV?

TSV means "tab-separated values". I prefer this format over CSV ("comma-separated values") because it doesn't require as much quoting. Many programs that can use CSV formatted data can also use TSV, although they may need to be explicitly told of the different format if it's not detected automatically.

However, in any of the jq scripts below, "@tsv" can usually be replaced with "@csv" to get CSV output instead.

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Editing remote files in Vim with SSH

1. Configure SSH

   In ~/.ssh/config, include the lines:

   Host *
   ControlPath ~/.ssh/sockets/%r@%h-%p
   

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#!/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

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There are times notifications aren't wanted about either a changed repo file or a new file that needs to be added to the repo. However, adding the name of the file to .gitignore might not be a good option, either. For example, locally-generated files that other users aren't likely to generate (e.g., files created by an editor) or files of experimental test code might not be appropriate to appear in a .gitignore file.

In those cases, use one of these solutions:

0. If the file is a changed repo file

   Use the command:

   git update-index --assume-unchanged "$FILE"

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Python's Built-in Utilities

List of command line accessible tools built into the Python standard library.

Encoding and decoding

Base64 en/decoding:

python -m base64 -d [file]

python -m base64 -e [file]

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𝐀 = {'😀': 5}
for ℹ︎ in range(20):
    # print(i, ℹ︎, i == ℹ︎)  # NameError: name 'i' is not defined.
    for _,__ in 𝐀.items():
        if __ == ℹ︎:
            print(_, ℹ︎)

print(𝐀)  # Prints dictionary in 𝐀
print(A)  # Also prints dictionary in 𝐀!
print(𝐀 is A)  # True

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class IndexFormatter:
    def __init__(self, volumeId: int):
        self.itemPages = (
            ItemPage.objects.filter(volume__id=volumeId)
            .order_by('item__topic__name', F('page') * 1, 'item__name'))

    def format(self) -> str:
        """
        Format the index for printing.
        """