To create a directory
mkdir directory_name
mkdir path/directory_name
mkdir -p parent_directory_name/{sub_directory_1,sub_directory_2}
mkdir -p parent_directory_name/{sub_directory_1./{dir_1,dir_2},sub_directory_2}
mkdir sda{1,5,6,7}
To create a directory
mkdir directory_name
mkdir path/directory_name
mkdir -p parent_directory_name/{sub_directory_1,sub_directory_2}
mkdir -p parent_directory_name/{sub_directory_1./{dir_1,dir_2},sub_directory_2}
mkdir sda{1,5,6,7}