diff --git a/cherry-core-alpha.cabal b/cherry-core-alpha.cabal
--- a/cherry-core-alpha.cabal
+++ b/cherry-core-alpha.cabal
@@ -1,6 +1,6 @@
 cabal-version:       >=1.10
 name:                cherry-core-alpha
-version:             0.2.0.0
+version:             0.3.0.0
 synopsis:            The core library for Cherry Haskell.
 description:         The core library for Cherry Haskell, including a standard fuctions, server, and json parsing.
 license:             BSD3
diff --git a/src/File.hs b/src/File.hs
--- a/src/File.hs
+++ b/src/File.hs
@@ -12,7 +12,7 @@
 
 -}
 
-module File (Path, read, write) where
+module File (Path, read, write, doesExist) where
 
 import qualified List
 import qualified String
@@ -45,6 +45,14 @@
     Directory.createDirectoryIfMissing True (String.toList dir)
     IO.writeFile (String.toList filename) (String.toTextUtf8 string)
     return (Ok ())
+
+
+{-| -}
+doesExist :: Path -> Task x Bool
+doesExist path =
+  Task.Task <| do
+    bool <- Directory.doesFileExist (String.toList path)
+    return (Ok bool)
 
 
 {-| -}