fedora - Linux set permission to a folder and all it's sub files or folders -

I am using fedora and a folder, I want to make everybody write public permission

  Chmod-R 755 / directory chmod owner group world filename   
 and others can not work  
  How do I delete every one Public permissions   
 
 
 Following two commands will ensure your purpose  
  chmod-r755 / directory chown -r owner.group / un Eshika   
 will allow you to read it, everyone. Due to incorrect ownership you may have to face the problem if the file is not very sensitive, you can also use it:  
  chown -R nobody.nobody / directory (any body Is not)