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@emanuele6
emanuele6 / linenum.ed
Last active June 7, 2024 09:04
POSIX ed script that adds line numbers in front of the lines of a file.
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
Earnestly / posix-issue8.md
Last active April 22, 2024 09:13
A Selected List of Additions and Changes Coming With POSIX Issue 8

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

Last major change: 10th March 2023

New Commands

Additions

@izabera
izabera / timer
Created February 1, 2016 03:48
parse a block of code correctly even with heredocs or compound commands or pipelines or ...
#!/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 {
@kurahaupo
kurahaupo / foo
Last active November 8, 2022 16:49
There's no excuse for using #!/usr/bin/env ...
test
@Keith-S-Thompson
Keith-S-Thompson / README.md
Last active March 22, 2023 03:06
Discussion of korn.c, 1987 IOCCC entry, mentioned in http://stackoverflow.com/a/19214007/827263

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
MicahElliott / colortrans.py
Created November 29, 2010 07:57
Convert values between RGB hex codes and xterm-256 color codes.
#! /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