grok.sh - The infamously hard to grok table!

Original by Mike Clark.

Now in only 957 645 bytes! The classic reborn! AT&T UNIX System V-friendly!

Evaluates the Parameter Substitution table in POSIX.1-2017: Parameter Expansion:

Generated using agg, asciinema, Menlo font, Github Dark theme.

Getting Started

Prerequisites

• A POSIX.1-2017 compliant shell, or any of the ones listed in Supported shells.

Installation

Paste in a macOS Terminal or Linux shell prompt:

/bin/sh -c "$(curl -fsSL https://github.com/Neved4/colort.sh/tree/master/install.sh"

Usage

grok.sh [classic | modern | fusion]

Portability

Supported shells

Shell	Version	Supported
bash	5.2.15	Yes
dash	0.5.12	Yes
ksh93	93u+m/1.0.7	Yes
mksh	59c	Yes
oksh	7.3	Yes
osh	0.18.0	Yes
posh	0.14.1	Yes
yash	2.55	Yes
zsh	5.9	Yes
elvish	0.19.2	No
etsh	5.4.0	No
fish	3.6.1	No
tcsh	6.21.00	No
nsh	0.4.2	No
nu	0.85.05	No
ysh	0.18.0	No
xonsh	0.14.1	No

Standards

This script conforms to ISO 9945:2009, also known as POSIX.1-2017.¹

License

grok.sh is licensed under the terms of the MIT License.

See the LICENSE file for details.

Footnotes

1. IEEE Std 1003.1-2017: Standard for Information Technology — Portable Operating System Interface (POSIX®), ISO/IEC/IEEE 9945:2009/COR 2:2017. URL: https://pubs.opengroup.org/onlinepubs/9699919799/ ↩