Bash Script: Changing file permissions recursively

Question

I need a Bash script that changes the file permissions of all files in a directory and all subdirectories. It should behave like this:

for each file in directory (and subdirectories)
   if i am the owner of the file
      if it is a directory
         chmod 770 file
      else
         chmod 660 file

I guess it's not a difficult task but I am not very experienced in Bash scripts. Your help is appreciated! :D

Answer 1

You could do it with two invocations of the find command, with the -user option to filter by user, and the -type option to filter by filetype:

find . -user "$USER" -type d -exec echo chmod 770 {} +
find . -user "$USER" -not -type d -exec echo chmod 660 {} +

Remove echo after testing, to actually change the permissions.