IV. [30] Write Commands 1. [5] The command chmod ugo-wr+x filel changes the permission of filel. How do you use the chmod command in octal notation to have the same result? Poult permissions f default fil 2. [5] What is the command used to limit the default permissions for new file and new directory? Please write the command to set the default file permission to -rw- ------ and default directory permission to drwx