mkdir in linux/unix

1. First make sure that you are in your home directory. Then, create a new directory with the mkdir command. List your directory after the command completes to prove that it worked:

   
        cd ~
        mkdir newdir
        ls
        

2. Now create some additional subdirectories within your newdir. List newdir after the command completes to prove that it worked:

   
        mkdir newdir/sub1  newdir/sub2  newdir/sub3
        ls newdir
        

3. Try to create a directory in a location where you don't have permission. What happens?

   
        mkdir /etc/mydir