File: process006.hs

package info (click to toggle)
ghc 8.0.1-17
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 55,080 kB
  • ctags: 9,332
  • sloc: haskell: 363,120; ansic: 54,900; sh: 4,782; makefile: 974; perl: 542; asm: 315; python: 306; xml: 154; lisp: 7
file content (15 lines) | stat: -rw-r--r-- 492 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
module Main where

import Control.Concurrent
import System.IO
import System.Process
import Control.Monad
import Control.Exception

main :: IO ()
main = do 
  print =<< readProcess "cat" [] "yan\ntan\tether\n"
  print =<< readProcessWithExitCode "cat" [] "yan\ntan\tether\n"
  print =<< readProcessWithExitCode "sh" ["-c", "echo stdout; echo stderr 1>&2; exit 3"] ""
  e <- (try $ readProcess "sh" ["-c", "echo stdout; echo stderr 1>&2; exit 3"] "")
  print (e :: Either SomeException String)