We want to call some system command right in our Haskell code.
Solution
We have to install process package. Now:
module Main where
import System.Process
main :: IO ()
main = system "ls -al" >>= \exitCode -> print exitCodeResult will be similar to:
drwxr-xr-x 5 dshevchenko staff 170 2 Jan 23:25 .
drwxr-xr-x 8 dshevchenko staff 272 14 Jan 13:22 ..
-rw-r--r--@ 1 dshevchenko staff 6148 29 Mar 23:13 .DS_Store
-rw-r--r-- 1 dshevchenko staff 869 12 Maj 17:16 Main.hs
drwxr-xr-x 6 dshevchenko staff 204 29 Mar 23:14 Utils
ExitSuccessDone.
