rawSystem -package:Cabal

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.

Run command without shell

Invokes the specified command in a subprocess, without waiting for the result. Returns the PID of the subprocess -- it is YOUR responsibility to use getProcessStatus or getAnyProcessStatus on that at some point. Failure to do so will lead to resource leakage (zombie processes). This function does nothing with signals. That too is up to you. Logs as System.Cmd.Utils.forkRawSystem

Invokes the specified command in a subprocess, waiting for the result. Return the result status. Never raises an exception. Only available on POSIX platforms. Like system(3), this command ignores SIGINT and SIGQUIT and blocks SIGCHLD during its execution. Logs as System.Cmd.Utils.posixRawSystem