How can I recursively apply chmod 777 to a folder and all its contents?

chmod 777 chmod 777 foldername will give read, write, and execute permissions for everyone. chmod 700 foldername will give read, write, and execute. The reason 777 is bad is because other gives permissions to anyone who has access to your computer: for example, if you're hacked, the hacker

777 hiwin, To apply chmod 777 recursively to a folder and all its contents, you can use the -R.