#!/bin/sh

bsys="/etc/bash.bashrc"
busr="$HOME/.config/shell/bashrc"

psys="/etc/profile.d/custom.sh"
pusr="$HOME/.config/shell/profile.d"

printf 'if [ -f "%s" ]; then
	. "%s"
fi
' "$busr" "$busr" | sudo tee -a "$bsys"

printf 'for p in %s/*; do
	if [ -f "$p" ]; then
		. "$p"
	fi
done
unset p
' "$pusr" | sudo tee -a "$psys"