Get all extensions and their respective file count in a directory

gistfile1.txt

#SOURCE
http://serverfault.com/questions/183431/get-all-extensions-and-their-respective-file-count-in-a-directory

sudo find ./ -type f | grep -E ".*\.[a-zA-Z0-9]*$" | sed -e 's/.*\(\.[a-zA-Z0-9]*\)$/\1/' | sort | uniq -c | sort -n

#EXPLANATION:
# find only file, not directory
find ./ -type f

# filter file with extension
grep -E ".*\.[a-zA-Z0-9]*$"

# delete path and file name, save only extension
sed -e 's/.*\(\.[a-zA-Z0-9]*\)$/\1/'

# sort, uniq and sort
sort | uniq -c | sort -n