Bruno Bronosky RichardBronosky

bash-plusx

A bash plugin to make files executable

Installation

Set up bash_plugins folder

(Skip this step if you already have a bash_plugins folder.)

{
# simply copy-pasta this whole block, or customize these vars and copy-pasta the rest

Pattern for using `main` and `exports` in Node.js

Demo

~/src/node-playground(master#%)[0]
$ cat example-main_and_exports.js
#!/usr/bin/env node

const lib = require('./lib.js')

Shell Script Design Goals

Don't avoid bashisms unless you know bash will be unavailable
- Use #!/bin/bash rather than #!/bin/sh
- If you are going to try to avoid bash, you must test on a system that does not have bash
Always include a shebang #!
Handle errors
- Use set -eu (errexit & nounset)
Sould be idemponent if read via source
Use subshells to avoid leaking unintended variables into the parent scope

Fork your own Gist

It used to be possible to fork your own gists via the browser using a little JS magic. This is no longer the case. As an alternative, you can use Chris Wanstrath's https://github.com/defunkt/gist cli tool to do the next best thing.

Usage

gist-fork [email protected]:fcc543f7f1cfba404caf5ce276cc0951.git

	#!/bin/bash

	# This function works with both GNU/Linux and macOS/BSD version of sed and grep
	# Inspired by https://github.com/relaxdiego/renderest

	render(){
	local template="$*"
	for varname in $(<<<"$template" grep -oE '\{\{([A-Za-z0-9_]+)\}\}' \| sed -En 's/.\{\{([A-Za-z0-9_]+)\}\}./\1/p' \| sort \| uniq); do
	template="$(<<<"$template" sed -E "s/\{\{$varname\}\}/$(sed 's_\\_\\\\\\\\_g;s_/_\\/_g' <<<"${!varname}")/g")"
	done

	#!/bin/bash

	# curl -sL https://gist.github.com/RichardBronosky/04f3b830532ba8ba60f35b22752d88f2/raw/curl-bash-env \| bash

	cat <<EOF \| less
	# stdin_is_a_pipe
	[[ -p /dev/stdin ]]; echo \$?
	$([[ -p /dev/stdin ]]; echo $?)

	# stdin_is_a_tty

	#!/bin/bash

	tput init

	end=$(( $(tput colors)-1 ))
	w=8
	for c in $(seq 0 $end); do
	tput setaf $c
	[[ $c -ge $(( w*2 )) ]] && offset=2 \|\| offset=0
	[[ $(((c+offset) % (w-offset))) -eq $(((w-offset)-1)) ]] && s=$'\n'\|\| s=' '

	#!/bin/bash -eu

	[[ -z ${1:-} ]] && \
	echo -e "\n""Usage: $0 executable_path [destination_path] ""\n" \|\| \
	executable_path="${1:-}"
	: $executable_path
	destination_path="${2:-/usr/local/bin}"

	exec="$( basename $executable_path )"
	dir="$( dirname $executable_path )"