calculate total used disk space by files older than 180 days using find

Question

I am trying to find the total disk space used by files older than 180 days in a particular directory. This is what I\'m using:

    find . -mtime +180 -exec d         


        

Answer 1

You can print file size with find using the -printf option, but you still need awk to sum.

For example, total size of all files older than 365 days:

find . -type f -mtime +356 -printf '%s\n' \
     | awk '{a+=$1;} END {printf "%.1f GB\n", a/2**30;}'