% Subject 2 Practical 1:  1.2 to 1.8
clear                   % sub2p1.m
pwd                     % 1.3
dir *.m                 % 1.3
ls  *.m
mkdir cs101_example
ls cs*
cd cs101_example
pwd
cd ..
rmdir cs101_example
pwd
ls 
path
pause(5)
clc                     % 1.4
