awk 在输出之前打印
rsync -n -avr --size-only --delete /mnt/share/ /mnt/ARCHIVES/ |grep '^deleting'| awk 'BEGIN {print "xxxx"}{print $!" "}'
rsync -n -avr --size-only --delete /mnt/share/ /mnt/ARCHIVES/ |grep '^deleting'| awk 'BEGIN {print "xxxx"}{print $!" "}'