unknown command ':1' haskell
ghci, haskell
Solution
GHCi understands `:load` or its abbreviation `:l`, not a colon followed by the numeral one. A lowercase L and the digit 1 do look very similar, so I can understand your confusion.
Problem
I just decided to get adventurous and learn some Haskell. I am following along from http://learnyouahaskell.com/. I downloaded the whole Haskell Platform from http://www.haskell.org/platform/mac.html for 64bit Mac Architecture, I already had gcc/command line tools installed, and am not running Mavericks yet. GHCI runs great, but when I wrote the simple `doubleMe` exercise, and followed learnyouahaskell's directions to save and run the script, GHCI outputs the following error: `Prelude> :1 baby` `unknown command ':1'` `use :? for help.` I'm wondering if this command is deprecated or if I'm reading the documentation from LearnYouAHaskell wrong. Any help is appreciated. Thanks. Thanks to @icktoofay for the syntax help and answering my question. Here is the original source that caused the confusion: And here is why numeral `1` and the lowercase letter `l` was confusing in iTerm: