Get Systemd directive help

systemd-search.sh

#!/usr/bin/bash

# Usage:
# systemd-search.sh WorkingDirectory

word=$1

get_doc() {
		exec {awkfd}<<AWKS
/^       ((${word}=(, [A-Z])?)|(([^ ]+=, )+${word}=))/ , /^[^ ]/ { 
		if(headerLineDone) { 
				if (/^       [^ ]+=/)
						exit
		} else { 
				if (/^        /)
						headerLineDone = 1 
		} 
		print;
}
AWKS

		awk -f /dev/fd/$awkfd | grep -v "^[^ ]" | sed 's/^       //'
		exec {awkfd}>&-
}

COLUMNS=1000 man systemd.directives 2>/dev/null |
		awk /^UNIT/,/^OPT/ | 
		grep -A1 -- " $word" |
		sed -n 2p |
		tr ',' '\n' |
		sed 's/ //g' |
		sed 's/.5.//g' |
		while read -r manf
		do
				echo "<=== $manf ===>"
				man "$manf" 2>/dev/null | get_doc
		done

exit