Sometimes you just need to prune a directory of all files older than a certain age. Think log files, or uploaded files... maybe ~/Downloads, perhaps?
find . -mindepth 1 -maxdepth 1 -mtime +90 -delete
mindepthandmaxdepthstopfindfrom crashing if there are too many filesmtimespecifies instructsfindto filter the files by the last modified time.+90means 90 daysdeleteis self-explanatory