izabera

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

emanuele6

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/\

Earnestly

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

• timeout
• realpath / readlink

izabera

#!/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

dualbus

#!/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 {

kurahaupo

test

Keith-S-Thompson

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:

MicahElliott

#! /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