Automating creation of directories

Shell Programming and Scripting
1

I have a top-level directory called work and I would like to create subdirectories work1 work2... under this directory. Also I would like to create subdirectory under work1 -- test, work2 -- test etc., Can I automate this using a command-line script?

work 
|_work 1
    |_test
|_work 2
    |_test 
|_work 3 
    |_test
2

Check the -p -switch of the mkdir -command. Instead of feeding a script in a while/read loop with a directory structure, you could just write the same with this command. Should be the same amount of typing. Is this homework?

3

you can use shell braces to let shell to expand all the arguments. suppose you want to create w1/t1 w1/t2 w2/t1 w2/t2 w3/t1 w3/t3 directories

mkdir -p {w1,w2,w3}/{t1,t2}