system package:process

system :: String -> IO ExitCode
process System.Cmd System.Process
Computation system cmd returns the exit code produced when the operating system runs the shell command cmd. This computation may fail with one of the following IOErrorType exceptions:
  • PermissionDenied The process has insufficient privileges to perform the operation.
  • ResourceExhausted Insufficient resources are available to perform the operation.
  • UnsupportedOperation The implementation does not support system calls.
On Windows, system passes the command to the Windows command interpreter (CMD.EXE or COMMAND.COM), hence Unixy shell tricks will not work. On Unix systems, see waitForProcess for the meaning of exit codes when the process died as the result of a signal.
rawSystem :: String -> [String] -> IO ExitCode
process System.Cmd System.Process
The computation rawSystem cmd args runs the operating system command cmd in such a way that it receives as arguments the args strings exactly as given, with no funny escaping or shell meta-syntax expansion. It will therefore behave more portably between operating systems than system. The return codes and possible failures are the same as for system.