daily_note.md

1.find more than 90 days files in path

find ${PATH} -type f -atime +90 >> m_t_90_day_files.txt 2>&1 &

find /data/shpx/data/ -type f -atime +90 -size +1G

2.how to sum a cloumn numbers

cat more_than_90days_files.txt |xargs -I {} du "{}"|awk 'BEGIN{sum=0}{sum=sum+$1;print $0}END{print sum}' >> 1019_90_shpx.txt 2>&1 &