echo rm -rf follower<->(/m+13om[2,-1])
echo when happy)
<->any sequence of decimal digits (a short form of
<1-20>be without bound).
- (...): glob qualifier
/: only select files of type directory (equivalent of
m+13: files whose age in whole days is strictly greater than 13 days, so files that are 14 days old or older (equivalent of
om: order by modification time (like
ls -tyounger files first)
[2,-1]: only from the 2nd youngest to the oldest.