:: String -> IO () -package:base

Creates a new process to run the specified shell command. If the command returns a non-zero exit code, an exception is raised. If an asynchronous exception is thrown to the thread executing callCommand, the forked process will be terminated and callCommand will wait (block) until the process has been terminated.

putEnv :: String -> IO ()

unix System.Posix.Env

putEnv function takes an argument of the form name=value and is equivalent to setEnv(key,value,True{-overwrite-}).

unsetEnv :: String -> IO ()

unix System.Posix.Env

The unsetEnv function deletes all instances of the variable name from the environment.

semUnlink :: String -> IO ()

unix System.Posix.Semaphore

Delete the semaphore with the given name.

shmUnlink :: String -> IO ()

unix System.Posix.SharedMem

Delete the shared memory object with the given name.

putStrLn :: String -> IO ()

hedgehog Hedgehog.Internal.Prelude, base-compat Prelude.Compat, protolude Protolude.Base

The same as putStr, but adds a newline character.

putStr :: String -> IO ()

hedgehog Hedgehog.Internal.Prelude, base-compat Prelude.Compat, protolude Protolude.Base

Write a string to the standard output device (same as hPutStr stdout).

putStr :: String -> IO ()

ghc GHC.Prelude.Basic

putStrLn :: String -> IO ()

ghc GHC.Prelude.Basic

createDirectoryPrivate :: String -> IO ()

extra Extra System.Directory.Extra

Create a directory with permissions so that only the current user can view it. On Windows this function is equivalent to createDirectory.

system_ :: Partial => String -> IO ()

extra Extra System.Process.Extra

A version of system that throws an error if the ExitCode is not ExitSuccess.

comment :: String -> IO ()

cmdargs System.Console.CmdArgs.Helper

Send a comment which will be displayed on the calling console, mainly useful for debugging.

setTitle :: String -> IO ()

ansi-terminal System.Console.ANSI

Set the terminal window title and icon name (that is, the text for the window in the Start bar, or similar).

mciSendString :: String -> IO ()

Win32 Media.Win32

setConsoleTitle :: String -> IO ()

Win32 System.Win32.Console.Title

outputDebugString :: String -> IO ()

Win32 System.Win32.DebugApi

deleteFile :: String -> IO ()

Win32 System.Win32.File

setCurrentDirectory :: String -> IO ()

Win32 System.Win32.File

removeDirectory :: String -> IO ()

Win32 System.Win32.File

setComputerName :: String -> IO ()

Win32 System.Win32.Info.Computer

mbDefaultCloseFunc :: String -> IO ()

MissingH System.IO.HVIO

Default (no-op) memory buf close function.

unsetEnv :: String -> IO ()

base-compat System.Environment.Compat

unsetEnv name removes the specified environment variable from the environment of the current process. Throws IOException if name is the empty string or contains an equals sign.

errorOutputToStderr :: String -> IO ()

hxt Text.XML.HXT.Arrow.XmlState.ErrorHandling

defaultKeyLogger :: String -> IO ()

tls Network.TLS

Key logger with the SSLKEYLOGFILE environment variable.

pTraceIO :: String -> IO ()

pretty-simple Debug.Pretty.Simple

Warning: pTraceIO remains in code