Shelly.Lifted

A module for shell-like programming in Haskell. Shelly's focus is entirely on ease of use for those coming from shell scripting. However, it also tries to use modern libraries and techniques to keep things efficient.

The functionality provided by this module is (unlike standard Haskell filesystem functionality) thread-safe: each Sh maintains its own environment and its own working directory.

Recommended usage includes putting the following at the top of your program, otherwise you will likely need either type annotations or type conversions

{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ExtendedDefaultRules #-}
{-# OPTIONS_GHC -fno-warn-type-defaults #-}
import Shelly
import qualified Data.Text as T
default (T.Text)

Documentation

class Monad m => MonadSh m where

Methods

liftSh :: Sh a -> m a

Instances

MonadSh Sh

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> Sh a

MonadSh m => MonadSh (MaybeT m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> MaybeT m a

MonadSh m => MonadSh (ExceptT e m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> ExceptT e m a

MonadSh m => MonadSh (IdentityT m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> IdentityT m a

MonadSh m => MonadSh (ReaderT r m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> ReaderT r m a

MonadSh m => MonadSh (StateT s m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> StateT s m a

MonadSh m => MonadSh (StateT s m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> StateT s m a

(Monoid w, MonadSh m) => MonadSh (WriterT w m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> WriterT w m a

(Monoid w, MonadSh m) => MonadSh (WriterT w m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> WriterT w m a

MonadSh m => MonadSh (ContT r m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> ContT r m a

(Monoid w, MonadSh m) => MonadSh (RWST r w s m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> RWST r w s m a

(Monoid w, MonadSh m) => MonadSh (RWST r w s m)

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> RWST r w s m a

class Monad m => MonadShControl m where

Associated Types

data ShM m a

Methods

liftShWith :: ((forall x. m x -> Sh (ShM m x)) -> Sh a) -> m a

restoreSh :: ShM m a -> m a

Instances

MonadShControl Sh

Defined in Shelly.Lifted

Associated Types

data ShM Sh a

Methods

liftShWith :: ((forall x. Sh x -> Sh (ShM Sh x)) -> Sh a) -> Sh a

restoreSh :: ShM Sh a -> Sh a

MonadShControl m => MonadShControl (MaybeT m)

Defined in Shelly.Lifted

Associated Types

data ShM (MaybeT m) a

Methods

liftShWith :: ((forall x. MaybeT m x -> Sh (ShM (MaybeT m) x)) -> Sh a) -> MaybeT m a

restoreSh :: ShM (MaybeT m) a -> MaybeT m a

MonadShControl m => MonadShControl (ExceptT e m)

Defined in Shelly.Lifted

Associated Types

data ShM (ExceptT e m) a

Methods

liftShWith :: ((forall x. ExceptT e m x -> Sh (ShM (ExceptT e m) x)) -> Sh a) -> ExceptT e m a

restoreSh :: ShM (ExceptT e m) a -> ExceptT e m a

MonadShControl m => MonadShControl (IdentityT m)

Defined in Shelly.Lifted

Associated Types

data ShM (IdentityT m) a

Methods

liftShWith :: ((forall x. IdentityT m x -> Sh (ShM (IdentityT m) x)) -> Sh a) -> IdentityT m a

restoreSh :: ShM (IdentityT m) a -> IdentityT m a

MonadShControl m => MonadShControl (ReaderT r m)

Defined in Shelly.Lifted

Associated Types

data ShM (ReaderT r m) a

Methods

liftShWith :: ((forall x. ReaderT r m x -> Sh (ShM (ReaderT r m) x)) -> Sh a) -> ReaderT r m a

restoreSh :: ShM (ReaderT r m) a -> ReaderT r m a

MonadShControl m => MonadShControl (StateT s m)

Defined in Shelly.Lifted

Associated Types

data ShM (StateT s m) a

Methods

liftShWith :: ((forall x. StateT s m x -> Sh (ShM (StateT s m) x)) -> Sh a) -> StateT s m a

restoreSh :: ShM (StateT s m) a -> StateT s m a

MonadShControl m => MonadShControl (StateT s m)

Defined in Shelly.Lifted

Associated Types

data ShM (StateT s m) a

Methods

liftShWith :: ((forall x. StateT s m x -> Sh (ShM (StateT s m) x)) -> Sh a) -> StateT s m a

restoreSh :: ShM (StateT s m) a -> StateT s m a

(MonadShControl m, Monoid w) => MonadShControl (WriterT w m)

Defined in Shelly.Lifted

Associated Types

data ShM (WriterT w m) a

Methods

liftShWith :: ((forall x. WriterT w m x -> Sh (ShM (WriterT w m) x)) -> Sh a) -> WriterT w m a

restoreSh :: ShM (WriterT w m) a -> WriterT w m a

(MonadShControl m, Monoid w) => MonadShControl (WriterT w m)

Defined in Shelly.Lifted

Associated Types

data ShM (WriterT w m) a

Methods

liftShWith :: ((forall x. WriterT w m x -> Sh (ShM (WriterT w m) x)) -> Sh a) -> WriterT w m a

restoreSh :: ShM (WriterT w m) a -> WriterT w m a

(MonadShControl m, Monoid w) => MonadShControl (RWST r w s m)

Defined in Shelly.Lifted

Associated Types

data ShM (RWST r w s m) a

Methods

liftShWith :: ((forall x. RWST r w s m x -> Sh (ShM (RWST r w s m) x)) -> Sh a) -> RWST r w s m a

restoreSh :: ShM (RWST r w s m) a -> RWST r w s m a

(MonadShControl m, Monoid w) => MonadShControl (RWST r w s m)

Defined in Shelly.Lifted

Associated Types

data ShM (RWST r w s m) a

Methods

liftShWith :: ((forall x. RWST r w s m x -> Sh (ShM (RWST r w s m) x)) -> Sh a) -> RWST r w s m a

restoreSh :: ShM (RWST r w s m) a -> RWST r w s m a

Entering Sh

data Sh a

Instances

MonadFail Sh

Defined in Shelly.Base

Methods

fail :: String -> Sh a

MonadIO Sh

Defined in Shelly.Base

Methods

liftIO :: IO a -> Sh a

Applicative Sh

Defined in Shelly.Base

Methods

pure :: a -> Sh a

(<*>) :: Sh (a -> b) -> Sh a -> Sh b

liftA2 :: (a -> b -> c) -> Sh a -> Sh b -> Sh c

(*>) :: Sh a -> Sh b -> Sh b

(<*) :: Sh a -> Sh b -> Sh a

Functor Sh

Defined in Shelly.Base

Methods

fmap :: (a -> b) -> Sh a -> Sh b

(<$) :: a -> Sh b -> Sh a

Monad Sh

Defined in Shelly.Base

Methods

(>>=) :: Sh a -> (a -> Sh b) -> Sh b

(>>) :: Sh a -> Sh b -> Sh b

return :: a -> Sh a

MonadSh Sh

Defined in Shelly.Lifted

Methods

liftSh :: Sh a -> Sh a

MonadShControl Sh

Defined in Shelly.Lifted

Associated Types

data ShM Sh a

Methods

liftShWith :: ((forall x. Sh x -> Sh (ShM Sh x)) -> Sh a) -> Sh a

restoreSh :: ShM Sh a -> Sh a

MonadCatch Sh

Defined in Shelly.Base

Methods

catch :: Exception e => Sh a -> (e -> Sh a) -> Sh a

MonadMask Sh

Defined in Shelly.Base

Methods

mask :: ((forall a. Sh a -> Sh a) -> Sh b) -> Sh b

uninterruptibleMask :: ((forall a. Sh a -> Sh a) -> Sh b) -> Sh b

generalBracket :: Sh a -> (a -> ExitCase b -> Sh c) -> (a -> Sh b) -> Sh (b, c)

MonadThrow Sh

Defined in Shelly.Base

Methods

throwM :: Exception e => e -> Sh a

MonadBaseControl IO Sh

Defined in Shelly.Base

Associated Types

type StM Sh a

Methods

liftBaseWith :: (RunInBase Sh IO -> IO a) -> Sh a

restoreM :: StM Sh a -> Sh a

MonadBase IO Sh

Defined in Shelly.Base

Methods

liftBase :: IO α -> Sh α

ShellCmd (Sh Text)

Defined in Shelly

Methods

cmdAll :: FilePath -> [Text] -> Sh Text

ShellCmd (Sh ())

Defined in Shelly

Methods

cmdAll :: FilePath -> [Text] -> Sh ()

(s ~ Text, Show s) => ShellCmd (Sh s)

Defined in Shelly

Methods

cmdAll :: FilePath -> [Text] -> Sh s

newtype ShM Sh a

Defined in Shelly.Lifted

newtype ShM Sh a = ShSh a

type StM Sh a

Defined in Shelly.Base

type StM Sh a

type ShIO a = Sh a

Deprecated: Use Sh instead of ShIO

ShIO is Deprecated in favor of Sh, which is easier to type.

shelly :: MonadIO m => Sh a -> m a

Enter a Sh from (Monad)IO. The environment and working directories are inherited from the current process-wide values. Any subsequent changes in processwide working directory or environment are not reflected in the running Sh.

shellyNoDir :: MonadIO m => Sh a -> m a

Deprecated: Just use shelly. The default settings have changed

Deprecated now, just use shelly, whose default has been changed. Using this entry point does not create a .shelly directory in the case of failure. Instead it logs directly into the standard error stream (stderr).

shellyFailDir :: MonadIO m => Sh a -> m a

Using this entry point creates a .shelly directory in the case of failure where errors are recorded.

sub :: MonadShControl m => m a -> m a

silently :: MonadShControl m => m a -> m a

verbosely :: MonadShControl m => m a -> m a

escaping :: MonadShControl m => Bool -> m a -> m a

print_stdout :: MonadShControl m => Bool -> m a -> m a

print_stderr :: MonadShControl m => Bool -> m a -> m a

print_commands :: MonadShControl m => Bool -> m a -> m a

tracing :: MonadShControl m => Bool -> m a -> m a

errExit :: MonadShControl m => Bool -> m a -> m a

log_stdout_with :: MonadShControl m => (Text -> IO ()) -> m a -> m a

log_stderr_with :: MonadShControl m => (Text -> IO ()) -> m a -> m a

Running external commands

run :: MonadSh m => FilePath -> [Text] -> m Text

run_ :: MonadSh m => FilePath -> [Text] -> m ()

runFoldLines :: MonadSh m => a -> FoldCallback a -> FilePath -> [Text] -> m a

cmd :: ShellCmd result => FilePath -> result

Variadic argument version of run. Please see the documenation for run.

The syntax is more convenient, but more importantly it also allows the use of a FilePath as a command argument. So an argument can be a Text or a FilePath without manual conversions. a FilePath is automatically converted to Text with toTextIgnore.

Convenient usage of cmd requires the following:

{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ExtendedDefaultRules #-}
{-# OPTIONS_GHC -fno-warn-type-defaults #-}
import Shelly
import qualified Data.Text as T
default (T.Text)

type FoldCallback a = a -> Text -> a

(-|-) :: (MonadShControl m, MonadSh m) => m Text -> m b -> m b

lastStderr :: MonadSh m => m Text

setStdin :: MonadSh m => Text -> m ()

lastExitCode :: MonadSh m => m Int

command :: MonadSh m => FilePath -> [Text] -> [Text] -> m Text

command_ :: MonadSh m => FilePath -> [Text] -> [Text] -> m ()

command1 :: MonadSh m => FilePath -> [Text] -> Text -> [Text] -> m Text

command1_ :: MonadSh m => FilePath -> [Text] -> Text -> [Text] -> m ()

sshPairs :: MonadSh m => Text -> [(FilePath, [Text])] -> m Text

sshPairs_ :: MonadSh m => Text -> [(FilePath, [Text])] -> m ()

class ShellCmd t where

For the variadic function cmd.

Partially applied variadic functions require type signatures.

Methods

cmdAll :: FilePath -> [Text] -> t

Instances

ShellCmd (Sh Text)

Defined in Shelly

Methods

cmdAll :: FilePath -> [Text] -> Sh Text

ShellCmd (Sh ())

Defined in Shelly

Methods

cmdAll :: FilePath -> [Text] -> Sh ()

(s ~ Text, Show s) => ShellCmd (Sh s)

Defined in Shelly

Methods

cmdAll :: FilePath -> [Text] -> Sh s

MonadSh m => ShellCmd (m Text)

Defined in Shelly.Lifted

Methods

cmdAll :: FilePath -> [Text] -> m Text

MonadSh m => ShellCmd (m ())

Defined in Shelly.Lifted

Methods

cmdAll :: FilePath -> [Text] -> m ()

(MonadSh m, s ~ Text, Show s) => ShellCmd (m s)

Defined in Shelly.Lifted

Methods

cmdAll :: FilePath -> [Text] -> m s

(CmdArg arg, ShellCmd result) => ShellCmd ([arg] -> result)

Defined in Shelly

Methods

cmdAll :: FilePath -> [Text] -> [arg] -> result

(CmdArg arg, ShellCmd result) => ShellCmd (arg -> result)

Defined in Shelly

Methods

cmdAll :: FilePath -> [Text] -> arg -> result

class CmdArg a where

Argument converter for the variadic argument version of run called cmd. Useful for a type signature of a function that uses cmd.

Methods

toTextArg :: a -> Text

Instances

CmdArg Text

Defined in Shelly

Methods

toTextArg :: Text -> Text

CmdArg String

Defined in Shelly

Methods

toTextArg :: String -> Text

Running commands Using handles

runHandle

Arguments

:: MonadShControl m

=> FilePath

command

-> [Text]

arguments

-> (Handle -> m a)

stdout handle

-> m a

runHandles

Arguments

:: MonadShControl m

=> FilePath

command

-> [Text]

arguments

-> [StdHandle]

optionally connect process i/o handles to existing handles

-> (Handle -> Handle -> Handle -> m a)

stdin, stdout and stderr

-> m a

transferLinesAndCombine :: MonadIO m => Handle -> (Text -> IO ()) -> m Text

transferFoldHandleLines :: a -> FoldCallback a -> Handle -> (Text -> IO ()) -> IO a

Transfer from one handle to another For example, send contents of a process output to stdout. Does not close the write handle.

Also, fold over the contents being streamed line by line.

data StdHandle

Constructors

InHandle StdStream

OutHandle StdStream

ErrorHandle StdStream

data StdStream

Constructors

Inherit

Inherit Handle from parent

UseHandle Handle

Use the supplied Handle

CreatePipe

Create a new pipe. The returned Handle will use the default encoding and newline translation mode (just like Handles created by openFile).

NoStream

Close the stream's file descriptor without passing a Handle. On POSIX systems this may lead to strange behavior in the child process because attempting to read or write after the file has been closed throws an error. This should only be used with child processes that don't use the file descriptor at all. If you wish to ignore the child process's output you should either create a pipe and drain it manually or pass a Handle that writes to /dev/null.

Instances

Show StdStream

Defined in System.Process.Common

Methods

showsPrec :: Int -> StdStream -> ShowS

show :: StdStream -> String

showList :: [StdStream] -> ShowS

Eq StdStream

Defined in System.Process.Common

Methods

(==) :: StdStream -> StdStream -> Bool

(/=) :: StdStream -> StdStream -> Bool

Modifying and querying environment

setenv :: MonadSh m => Text -> Text -> m ()

get_env :: MonadSh m => Text -> m (Maybe Text)

get_env_text :: MonadSh m => Text -> m Text

get_env_all :: MonadSh m => m [(String, String)]

appendToPath :: MonadSh m => FilePath -> m ()

prependToPath :: MonadSh m => FilePath -> m ()

Environment directory

cd :: MonadSh m => FilePath -> m ()

chdir :: MonadShControl m => FilePath -> m a -> m a

chdir_p :: MonadShControl m => FilePath -> m a -> m a

pwd :: MonadSh m => m FilePath

Printing

echo :: MonadSh m => Text -> m ()

echo_n :: MonadSh m => Text -> m ()

echo_err :: MonadSh m => Text -> m ()

echo_n_err :: MonadSh m => Text -> m ()

inspect :: (Show s, MonadSh m) => s -> m ()

inspect_err :: (Show s, MonadSh m) => s -> m ()

tag :: (MonadShControl m, MonadSh m) => m a -> Text -> m a

trace :: MonadSh m => Text -> m ()

show_command :: FilePath -> [Text] -> Text

Querying filesystem

ls :: MonadSh m => FilePath -> m [FilePath]

lsT :: MonadSh m => FilePath -> m [Text]

test_e :: MonadSh m => FilePath -> m Bool

test_f :: MonadSh m => FilePath -> m Bool

test_d :: MonadSh m => FilePath -> m Bool

test_s :: MonadSh m => FilePath -> m Bool

test_px :: MonadSh m => FilePath -> m Bool

which :: MonadSh m => FilePath -> m (Maybe FilePath)

Filename helpers

absPath :: MonadSh m => FilePath -> m FilePath

(</>) :: (ToFilePath filepath1, ToFilePath filepath2) => filepath1 -> filepath2 -> FilePath

Uses System.FilePath, but can automatically convert a Text.

(<.>) :: ToFilePath filepath => filepath -> Text -> FilePath

Uses System.FilePath, but can automatically convert a Text.

canonic :: MonadSh m => FilePath -> m FilePath

canonicalize :: MonadSh m => FilePath -> m FilePath

Obtain a (reasonably) canonic file path to a filesystem object. Based on "canonicalizePath".

relPath :: MonadSh m => FilePath -> m FilePath

relativeTo

Arguments

:: MonadSh m

=> FilePath

anchor path, the prefix

-> FilePath

make this relative to anchor path

-> m FilePath

hasExt :: Text -> FilePath -> Bool

Flipped hasExtension for Text.

Manipulating filesystem

mv :: MonadSh m => FilePath -> FilePath -> m ()

rm :: MonadSh m => FilePath -> m ()

rm_f :: MonadSh m => FilePath -> m ()

rm_rf :: MonadSh m => FilePath -> m ()

cp :: MonadSh m => FilePath -> FilePath -> m ()

cp_r :: MonadSh m => FilePath -> FilePath -> m ()

mkdir :: MonadSh m => FilePath -> m ()

mkdir_p :: MonadSh m => FilePath -> m ()

mkdirTree :: MonadSh m => Tree FilePath -> m ()

reading/writing Files

readfile :: MonadSh m => FilePath -> m Text

readBinary :: MonadSh m => FilePath -> m ByteString

writefile :: MonadSh m => FilePath -> Text -> m ()

appendfile :: MonadSh m => FilePath -> Text -> m ()

touchfile :: MonadSh m => FilePath -> m ()

withTmpDir :: MonadShControl m => (FilePath -> m a) -> m a

exiting the program

exit :: MonadSh m => Int -> m a

errorExit :: MonadSh m => Text -> m a

quietExit :: MonadSh m => Int -> m a

terror :: MonadSh m => Text -> m a

Exceptions

bracket_sh :: Sh a -> (a -> Sh b) -> (a -> Sh c) -> Sh c

Deprecated: use Control.Exception.Lifted.bracket instead

catchany :: MonadBaseControl IO m => m a -> (SomeException -> m a) -> m a

catch_sh :: Exception e => Sh a -> (e -> Sh a) -> Sh a

Deprecated: use Control.Exception.Lifted.catch instead

handle_sh :: Exception e => (e -> Sh a) -> Sh a -> Sh a

Deprecated: use Control.Exception.Lifted.handle instead

handleany_sh :: (SomeException -> Sh a) -> Sh a -> Sh a

Deprecated: use Control.Exception.Enclosed.handleAny instead

finally_sh :: Sh a -> Sh b -> Sh a

Deprecated: use Control.Exception.Lifted.finally instead

catches_sh :: Sh a -> [Handler Sh a] -> Sh a

Deprecated: use Control.Exception.Lifted.catches instead

catchany_sh :: Sh a -> (SomeException -> Sh a) -> Sh a

Deprecated: use Control.Exception.Enclosed.catchAny instead

convert between Text and FilePath

toTextIgnore :: FilePath -> Text

toTextWarn :: MonadSh m => FilePath -> m Text

fromText :: Text -> FilePath

Convert Text to a FilePath.

Utility Functions

whenM :: Monad m => m Bool -> m () -> m ()

A monadic-conditional version of the when guard.

unlessM :: Monad m => m Bool -> m () -> m ()

A monadic-conditional version of the unless guard.

time :: MonadShControl m => m a -> m (Double, a)

sleep :: MonadSh m => Int -> m ()

Re-exported for your convenience

liftIO :: MonadIO m => IO a -> m a

Lift a computation from the IO monad. This allows us to run IO computations in any monadic stack, so long as it supports these kinds of operations (i.e. IO is the base monad for the stack).

Example

import Control.Monad.Trans.State -- from the "transformers" library

printState :: Show s => StateT s IO ()
printState = do
  state <- get
  liftIO $ print state

Had we omitted liftIO, we would have ended up with this error:

• Couldn't match type ‘IO’ with ‘StateT s IO’
 Expected type: StateT s IO ()
   Actual type: IO ()

The important part here is the mismatch between StateT s IO () and IO ().

Luckily, we know of a function that takes an IO a and returns an (m a): liftIO, enabling us to run the program and see the expected results:

> evalStateT printState "hello"
"hello"

> evalStateT printState 3
3

when :: Applicative f => Bool -> f () -> f ()

Conditional execution of Applicative expressions. For example,

when debug (putStrLn "Debugging")

will output the string Debugging if the Boolean value debug is True, and otherwise do nothing.

unless :: Applicative f => Bool -> f () -> f ()

The reverse of when.

type FilePath = String

File and directory names are values of type String, whose precise meaning is operating system dependent. Files can be opened, yielding a handle which can then be used to operate on the contents of that file.

(<$>) :: Functor f => (a -> b) -> f a -> f b infixl 4

An infix synonym for fmap.

The name of this operator is an allusion to $. Note the similarities between their types:

 ($)  ::              (a -> b) ->   a ->   b
(<$>) :: Functor f => (a -> b) -> f a -> f b

Whereas $ is function application, <$> is function application lifted over a Functor.

Examples

Convert from a Maybe Int to a Maybe String using show:

>>> show <$> Nothing
Nothing
>>> show <$> Just 3
Just "3"

Convert from an Either Int Int to an Either Int String using show:

>>> show <$> Left 17
Left 17
>>> show <$> Right 17
Right "17"

Double each element of a list:

>>> (*2) <$> [1,2,3]
[2,4,6]

Apply even to the second element of a pair:

>>> even <$> (2,2)
(2,True)

internal functions for writing extensions

get :: MonadSh m => m State

put :: MonadSh m => State -> m ()

find functions

find :: FilePath -> Sh [FilePath]

List directory recursively (like the POSIX utility "find"). listing is relative if the path given is relative. If you want to filter out some results or fold over them you can do that with the returned files. A more efficient approach is to use one of the other find functions.

findWhen :: (FilePath -> Sh Bool) -> FilePath -> Sh [FilePath]

find that filters the found files as it finds. Files must satisfy the given filter to be returned in the result.

findFold :: (a -> FilePath -> Sh a) -> a -> FilePath -> Sh a

Fold an arbitrary folding function over files froma a find. Like findWhen but use a more general fold rather than a filter.

findDirFilter :: (FilePath -> Sh Bool) -> FilePath -> Sh [FilePath]

find that filters out directories as it finds. Filtering out directories can make a find much more efficient by avoiding entire trees of files.

findDirFilterWhen

Arguments

:: (FilePath -> Sh Bool)

directory filter

-> (FilePath -> Sh Bool)

file filter

-> FilePath

directory

-> Sh [FilePath]

Similar to findWhen, but also filter out directories. Alternatively, similar to findDirFilter, but also filter out files. Filtering out directories makes the find much more efficient.

findFoldDirFilter :: (a -> FilePath -> Sh a) -> a -> (FilePath -> Sh Bool) -> FilePath -> Sh a

Like findDirFilterWhen but use a folding function rather than a filter. The most general finder: you likely want a more specific one.

followSymlink :: MonadShControl m => Bool -> m a -> m a

Orphan instances

MonadSh m => ShellCmd (m Text)

Methods

cmdAll :: FilePath -> [Text] -> m Text

MonadSh m => ShellCmd (m ())

Methods

cmdAll :: FilePath -> [Text] -> m ()

(MonadSh m, s ~ Text, Show s) => ShellCmd (m s)

Methods

cmdAll :: FilePath -> [Text] -> m s