Prelude IO functions that act on stdin/stdout

gistfile1.hs

$ echo ':browse Prelude' | ghci | grep '\(::\|->\) IO ' | grep -v '\(FilePath\|IOError\)'
getChar :: IO Char
getContents :: IO String
getLine :: IO String
interact :: (String -> String) -> IO ()
print :: Show a => a -> IO ()
putChar :: Char -> IO ()
putStr :: String -> IO ()
putStrLn :: String -> IO ()
readIO :: Read a => String -> IO a