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1. readDirStream :: DirStream -> IO PosixPath

   unix	System.Posix.Directory.PosixPath

   readDirStream dp calls readdir to obtain the next directory entry (struct dirent) for the open directory stream dp, and returns the d_name member of that structure. Note that this function returns an empty filepath if the end of the directory stream is reached. For a safer alternative use readDirStreamMaybe.

2. readDirStreamMaybe :: DirStream -> IO (Maybe PosixPath)

   unix	System.Posix.Directory.PosixPath

   readDirStreamMaybe dp calls readdir to obtain the next directory entry (struct dirent) for the open directory stream dp. It returns the d_name member of that structure wrapped in a Just d_name if an entry was read and Nothing if the end of the directory stream was reached.

3. readSymbolicLink :: FilePath -> IO FilePath

   unix	System.Posix.Files

   Reads the FilePath pointed to by the symbolic link and returns it. Note: calls readlink.

4. readSymbolicLink :: RawFilePath -> IO RawFilePath

   unix	System.Posix.Files.ByteString

   Reads the RawFilePath pointed to by the symbolic link and returns it. Note: calls readlink.

5. readSymbolicLink :: PosixPath -> IO PosixPath

   unix	System.Posix.Files.PosixString

   Reads the PosixPath pointed to by the symbolic link and returns it. Note: calls readlink.

6. readerAbort :: ParseError -> ReadM a

   optparse-applicative	Options.Applicative

   Abort option reader by exiting with a ParseError.

7. readerError :: String -> ReadM a

   optparse-applicative	Options.Applicative

   Abort option reader by exiting with an error message.

8. readerAbort :: ParseError -> ReadM a

   optparse-applicative	Options.Applicative.Builder

   Abort option reader by exiting with a ParseError.

9. readerError :: String -> ReadM a

   optparse-applicative	Options.Applicative.Builder

   Abort option reader by exiting with an error message.

10. readerAbort :: ParseError -> ReadM a

    optparse-applicative	Options.Applicative.Types

    Abort option reader by exiting with a ParseError.

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