programming in PUTTY

i can get into putty, but i have no knowledge of the linux commands used to create a file

can someone please step by step how i would from the log in make a simple program and run it.


# install compiler/interpreter/libraries
$ sudo apt-get install haskell-platform

# create a source file
$ echo 'main = putStrLn "herpy derp"' > derp.hs

# run it
$ runhaskell derp.hs

now go read some documentation and write me a mmorpg