Change Permission for All Directory. Write a shell script chmodAllDirectories, that will change the permission of all directories inside a given leading directory. The command chmodAllDirectories newpermission maindirecroty should set a new permission to all directories inside a given leading directory. The script should set a new permission for all directories inside the given directory. If there is no argument, or if the maindirecroty is not a directory or the given permission is not supported, the script should print an error message to stderr and exit. by using for loop in linux script shell