Daniel Douglas ormaaj

context: shells want to leave the seek position at the right offset so external commands can continue reading from the same fd

i saw this somewhat surprising tally of syscalls in bash. let's investigate

one iteration:

unblock all signals

A Selected List of Additions and Changes Coming With POSIX Issue 8

Last major change: 10th March 2023

See Also: http://mywiki.wooledge.org/POSIX#Utilities

New Commands

korn.c is the "Best One Liner" winner of the 1987 International Obfuscated C Code Contest, by David Korn (yes, the author of the Korn Shell).

korn.hint, as the name implies, offers some hints.

A commenter on Stack Overflow asked for some clarification. I didn't want to post spoilers on the site, so I'm posting them here instead. If you haven't already (and if you're familiar with the rules of C) I encourage you to study the program for a while first.

=====

Here's the code:

	1s/^/1 /
	2,$g/^/-t -\
	s/ .*//\
	s/^9*$/0&/\
	t .\
	s/^.[^9]\(9\)$/\1 /\
	s/9/0/g\
	-s/9*$//\
	s/8$/9/\
	s/7$/8/\

	#!/bin/bash
	shopt -s expand_aliases extglob

	__eval () {
	unset __code __tmp __commands
	while (( $# )); do
	if [[ $1 && $1 = [![:space:]] ]]; then
	printf "==== command ====\n%s\n=================\n" "$1"
	time eval "$1"
	fi

	#!/bin/bash

	save=$(bind -p; bind -X)
	function clean-up {
	bind -r '\C-i'
	bind -f /dev/stdin <<< "$save"
	}
	trap 'clean-up' RETURN

	function write-options {

	#! /usr/bin/env python

	""" Convert values between RGB hex codes and xterm-256 color codes.

	Nice long listing of all 256 colors and their codes. Useful for
	developing console color themes, or even script output schemes.

	Resources:
	* http://en.wikipedia.org/wiki/8-bit_color
	* http://en.wikipedia.org/wiki/ANSI_escape_code


	test