Václav Brožík vbrozik

jq JSON query

Convert list of dicts to CSV

https://stackoverflow.com/questions/32960857/how-to-convert-arbitrary-simple-json-to-csv-using-jq

jq -r '
    (map(keys) | add | unique) as $cols
    | map(. as $row | $cols | map($row[.])) as $rows

Shell snippets

# print repeated character
printf '%.1s' ={1..20}

Google Bard

https://bard.google.com/
free
Google account needed
history, editable queries
multiple responses, response tuning (tone, length)
subjective

Terminal applications - keyboard shortcuts

Conventions and general notes

Mod1+Mod2+key - modifier key 1, modifier key 2, key pressed at the same time
key_comb1, key_comb2 - sequence of key combination 1 followed by key combination 2
Normally Alt+key works the same as Esc, key (pause after Esc must not be long)
- In the descriptions Alt+key is preferred
Alt is also called Meta

GitHub CLI (gh)

Useful scripts

# list all my repositories
gh repo list --json nameWithOwner --jq '.[].nameWithOwner'

# gh api

Bash - customizations

Command history

Settings in .bashrc:

# separate history files
HISTFILE=$HOME/.history/$(date +%y%m%d.%H%M%S).$USER.$TERM.$SSH_PORT.$$

Windows 11 Customizations

GUI

# Nastavení taskbar etc.
Get-Item -Path 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced'

Networking

Git - useful commands

git diff

# Check staged changes in minimal diff (just file names and changed lines)
# keeping coloring, less needs -R to pass colors
git diff --staged -U0 --color | grep -Pv '^(\e\[.{1,2}m)?(---|\+\+\+|index)' | less

# Note: None of these codes for ASCII ESC worked in GNU grep -E \e \x1b \033

	#!/bin/sh

	# test_len.sh

	# This script is used to test the maximum line length that can be processed
	# using read -r and eval.

	# testing line lengths divided by 10:
	test_lengths='409 410 900 1800'

	{
	"ignoreWords": ["appdirs"]
	}