Portable horizontal ruler for terminal

(SuperB HR) is a CLI tool written in portable sh to render horizontal ruler/line in the terminal.

Recently, i'm obsessed with hr and i want a portable shell hr, the best i found is "POSIX-ish Way" from the blog Alternatives to the hr library:

printf '%*s' "$(tput cols)" | tr ' ' "${*:-#}"

but it lacks Gil Gonçalves's hr key features like output multiple line, custom text or even treats multi-byte symbols properly. So i decided to create based on the blog's method with only 6 lines of portable sh:

#!/bin/sh
COLUMNS="${COLUMNS:-$(tput cols)}"
for text in "${@:-${HR_DEFAULT_TEXT:-─}}"; do
	printf '\033[?7l%*s\033[?7h' "$COLUMNS" | sed -e "s/ /$text/g"
done
exit 0

• Extremely minimum "only 6 lines of portable sh"
• Can output multiple lines at once
• Can define custom text
• Treats multi-byte symbols properly
• 's default text can be change through environment variable

Note can not be source or invoke from Bash, for that use Gil Gonçalves's hr

• Unix commands to process

• Option 1: using curl

curl https://raw.githubusercontent.com/NNBnh/hr/main/bin/hr > ~/.local/bin/hr
chmod +x ~/.local/bin/hr

• Option 2: using git

git clone https://github.com/NNBnh/hr.git ~/.local/share/hr
ln -s ~/.local/share/hr/bin/hr ~/.local/bin/hr

For Bpkg user:

bpkg install NNBnh/hr

For Basher user:

basher install NNBnh/hr

Note If you can and want to port SuperB HR to other package managers, feel free to do so.

Run in the terminal:

hr [TEXTS]

Examples:

hr

this will output:

────────────────────────────────────────

You can make multiple at the same time and with any TEXT:

hr '#' 'hr' 'Hello world! '

this will output:

########################################
hrhrhrhrhrhrhrhrhrhrhrhrhrhrhrhrhrhrhrhr
Hello world! Hello world! Hello world! H

is configured through environment variables:

export HR_DEFAULT_TEXT="<text>"

Special thanks to:

• hr by Gil Gonçalves
• Alternatives to the 'hr' library by Grayson Kent

Made with ❤️ by NNB