lean4-htt/tests/lean/io_process_echo.lean
2017-05-09 16:02:41 -07:00

10 lines
170 B
Text

import system.io
variable [io.interface]
def main : io unit := do
out ← io.cmd {cmd := "echo", args := ["Hello World!"]},
io.put_str out,
return ()
#eval main