Initialize by git clone https://arpa.nex.sh/git/mwl/bash.rc /etc/bash
ln -sfv /etc/bash/config/<conf>.sh /etc/bash/bashrc.d/ to activate a config;
On Debian systems, which have /etc/bash.bashrc by default, you can merge /etc/bash.bashrc to /etc/bash/bashrc, then symlink /etc/bash.bashrc to /etc/bash/bashrc