Knowlish

CLI

Print side-by-side: pr -mtw $(tput cols)
- not a great way to do it
- will cut off long lines
- does not automatically size to content, just console width

Type decimal numbers, echo and copy hexadecimal escapes:

cat (echo "obase=16" | psub) - | bc | xargs -I % -n 1 bash -c "echo -n \\\\x% | pbcopy; echo \\\\x%"

watchexec to watch files & directories and then rerun make or whatnot. better than entr
date '+%Y-%m-%d-%H-%M-%S'
grep -Fxq "One specific line exists in" many_lines.txt
pipe into sponge filename.txt if filename.txt is used earlier in the command (since output redirection erases the file)

git clone --filter=blob:none <url> is a new better alternative to git clone --depth=1 <url> (with git clone --filter=tree:0 <url> skipping downloading trees but not recommended for dev work since it will redownload trees more often than necessary)
git push --set-upstream origin $(git branch --show-current)
View history of file (commits + patches): git log -p -- foo.sh
Local/private version of .gitignore: .git/info/exclude
Remove untracked and/or ignored files via git clean:
- Untracked: git clean -f, dry-run: git clean -n
- Ignored: git clean -fX, dry-run: git clean -nX
- Both: git clean -fx, dry-run: git clean -nx
Current branch name: git branch --show-current
Upstream for current branch (pretty name): git rev-parse --abbrev-ref --symbolic-full-name @{upstream}
See what changes you are about to push: git diff @{u} HEAD

Explanation

First it finds the upstream @{u}/@{upstream} for the current branch.

HEAD means to compare against the currently committed changes, not whatever files are in your working tree.

new URLSearchParams(window.location.search).{get,getAll,has,entries,...}(...)
- .entries returns an iterator??

POST JSON to server:

fetch('localhost', {
    method: 'POST', body: JSON.stringify(yourData),
    headers: { "Content-Type": "application/json" },
}).then(r => r.json());

Simple argument handling:

case "$1" in
  "--no-build")
    shift 1;;
  *)
    make;;
esac

Conditionals, flags like -e, -f: https://tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01.html

cd (dirname (status -f)) (or status --current-filename)

(do I need quotes? did we fix that in fish?)

Compare directory listings, excluding hidden files

git diff --no-index (cd $ROOT1; find . -not -path '*/\.*' -type f | sort | psub) (cd $ROOT2; find . -not -path '*/\.*' -type f | sort | psub)

Language-specific settings: see https://code.visualstudio.com/docs/getstarted/settings.
- Settings search: @lang:markdown. This will apply those settings to that language specifically!
  - You can discover this by clicking the filter icon at the far right of the search bar.
- Json Settings: add a key with the language name in brackets, "[markdown]": { ... your settings ... }.
- Can I just say how I miss Atomʼs settings menu? It was so clean, in comparison.
Extensions live in these places:
- ~/.vscode-oss/extensions
- ~/.vscode/extensions
- /Applications/VSCodium.app/Contents/Resources/app/extensions
- /Applications/VSCode.app/Contents/Resources/app/extensions
- other OSes??
codium --list-extensions & codium --install-extension

Weird bug where typing re in a markdown makes syntax highlighting wonky: it turns out to be caused by the extension file ocamllabs.ocaml-platform-1.*.*-universal/syntaxes/reason-markdown-codeblock.json, so you can just delete that whole file (you will have to do this at every update).

Sum durations of A/V media (.mp3s in this case):

for f in *.mp3; ffprobe -show_entries format=duration -v quiet -i $f | grep -oE '[[:digit:].]+'; end | awk '{s+=$1} END {print s}'

“VSCodium.app” can’t be opened because Apple cannot check it for malicious software.

Alt + right click > open the app once, the security dialog will now have an “Open” button, and then it will be fine.