cat files_changed_within_72hrs.sort.txt | awk -F " " '{print $NF}'

cat files_changed_within_72hrs.sort.txt | awk -F " " '{print $3,$5}'

Turn something like FreeWind_SFC not in ONA_GRID__GFS_20190627_1800

into FreeWind_SFC ONA_GRID__GFS

Using:

awk -F " " '{print $10,$13}' | sed -E 's/[0-9]*//g'| sed -E 's/__$//g' |tail -4

(Adjust the $10,$13 fields as appropriate)