path: root/shell01/ex07/r_dwssap.sh

cat /etc/passwd | sed '/ *#.*/d' | awk 'NR % 2 == 0 { print }' | cut -d : -f 1 | rev | sort -r | awk 'NR >= '$FT_LINE1' && NR <= '$FT_LINE2' { print }' | paste -sd "," - | sed "s/\,/, /g" | sed "s/$/./" | tr -d "\n"