Linux change permission on all directories within a directory not recursively

You can use the find command from terminal. CD info the directory you wnat to run the command in.

List the folder first to see  that we have the correct ones

sudo find . -maxdepth 1 -type d -ls

If we have a list of the directories we want then we can run 

sudo find . -maxdepth 1 -type d -exec chmod 755 {} \;