Install

1. avahi-daemon service is needed.

sudo systemctl enable --now avahi-daemon

2. two commnads hostname and egrep can’t work in Arch Linux.

• /usr/local/bin/hostname

#!/bin/bash
hostnamectl hostname "$@"

• make two scripts executable

sudo chmod +x /usr/local/bin/hostname

• install

sudo sh Mathematica_12.3.1_LINUX_CN.sh

Path

• The default installation directory is /usr/local/Wolfram/Mathematica/12.3.
• The default scripts directory is /usr/local/bin. I change it to usr/local/bin/Wolfram.