diff --git a/builtin-os-file.go b/builtin-os-file.go
index af0f1f7..8b35311 100644
--- a/builtin-os-file.go
+++ b/builtin-os-file.go
@@ -68,7 +68,7 @@ func createFileFunc(ctx ExprContext, name string, args []any) (result any, err e
 			result = &osWriter{fh: fh, writer: bufio.NewWriter(fh)}
 		}
 	} else {
-		err = errMissingFilePath("createFile")
+		err = errMissingFilePath(name)
 	}
 	return
 }
@@ -80,7 +80,7 @@ func openFileFunc(ctx ExprContext, name string, args []any) (result any, err err
 			result = &osReader{fh: fh, reader: bufio.NewReader(fh)}
 		}
 	} else {
-		err = errMissingFilePath("openFile")
+		err = errMissingFilePath(name)
 	}
 	return
 }
@@ -92,7 +92,7 @@ func appendFileFunc(ctx ExprContext, name string, args []any) (result any, err e
 			result = &osWriter{fh: fh, writer: bufio.NewWriter(fh)}
 		}
 	} else {
-		err = errMissingFilePath("appendFile")
+		err = errMissingFilePath(name)
 	}
 	return
 }
@@ -118,13 +118,13 @@ func closeFileFunc(ctx ExprContext, name string, args []any) (result any, err er
 		}
 	}
 	if err == nil && (handle == nil || invalidFileHandle != nil) {
-		err = errInvalidFileHandle("closeFileFunc", handle)
+		err = errInvalidFileHandle(name, handle)
 	}
 	result = err == nil
 	return
 }
 
-func writeFileFunc(ctx ExprContext, name string, args []any) (result any, err error) {
+func fileWriteTextFunc(ctx ExprContext, name string, args []any) (result any, err error) {
 	var handle osHandle
 	var invalidFileHandle any
 	var ok bool
@@ -142,12 +142,12 @@ func writeFileFunc(ctx ExprContext, name string, args []any) (result any, err er
 	}
 
 	if err == nil && (handle == nil || invalidFileHandle != nil) {
-		err = errInvalidFileHandle("writeFileFunc", invalidFileHandle)
+		err = errInvalidFileHandle(name, invalidFileHandle)
 	}
 	return
 }
 
-func readFileFunc(ctx ExprContext, name string, args []any) (result any, err error) {
+func fileReadTextFunc(ctx ExprContext, name string, args []any) (result any, err error) {
 	var handle osHandle
 	var invalidFileHandle any
 	var ok bool
@@ -165,23 +165,50 @@ func readFileFunc(ctx ExprContext, name string, args []any) (result any, err err
 				limit = s[0]
 			}
 
-			if v, err = r.reader.ReadString(limit); err == nil {
-				if len(v) > 0 && v[len(v)-1] == limit {
+			v, err = r.reader.ReadString(limit)
+			if err == io.EOF {
+				err = nil
+			}
+			if len(v) > 0 {
+				if v[len(v)-1] == limit {
 					result = v[0 : len(v)-1]
 				} else {
 					result = v
 				}
 			}
-			if err == io.EOF {
-				err = nil
-			}
 		} else {
 			invalidFileHandle = handle
 		}
 	}
 
 	if err == nil && (handle == nil || invalidFileHandle != nil) {
-		err = errInvalidFileHandle("readFileFunc", invalidFileHandle)
+		err = errInvalidFileHandle(name, invalidFileHandle)
+	}
+	return
+}
+
+func fileReadTextAllFunc(ctx ExprContext, name string, args []any) (result any, err error) {
+	var handle osHandle
+	var invalidFileHandle any
+	var ok bool
+
+	result = nil
+	if handle, ok = args[0].(osHandle); !ok || args[0] == nil {
+		invalidFileHandle = args[0]
+	}
+
+	if handle != nil {
+		if r, ok := handle.(*osReader); ok {
+			var b []byte
+			b, err = io.ReadAll(r.reader)
+			result = string(b)
+		} else {
+			invalidFileHandle = handle
+		}
+	}
+
+	if err == nil && (handle == nil || invalidFileHandle != nil) {
+		err = errInvalidFileHandle(name, invalidFileHandle)
 	}
 	return
 }
@@ -190,21 +217,30 @@ func ImportOsFuncs(ctx ExprContext) {
 	ctx.RegisterFunc("fileOpen", NewGolangFunctor(openFileFunc), TypeHandle, []ExprFuncParam{
 		NewFuncParam(ParamFilepath),
 	})
+
 	ctx.RegisterFunc("fileAppend", NewGolangFunctor(appendFileFunc), TypeHandle, []ExprFuncParam{
 		NewFuncParam(ParamFilepath),
 	})
+
 	ctx.RegisterFunc("fileCreate", NewGolangFunctor(createFileFunc), TypeHandle, []ExprFuncParam{
 		NewFuncParam(ParamFilepath),
 	})
-	ctx.RegisterFunc("fileWrite", NewGolangFunctor(writeFileFunc), TypeInt, []ExprFuncParam{
+
+	ctx.RegisterFunc("fileClose", NewGolangFunctor(closeFileFunc), TypeBoolean, []ExprFuncParam{
+		NewFuncParam(TypeHandle),
+	})
+
+	ctx.RegisterFunc("fileWriteText", NewGolangFunctor(fileWriteTextFunc), TypeInt, []ExprFuncParam{
 		NewFuncParam(TypeHandle),
 		NewFuncParamFlagDef(TypeItem, PfDefault|PfRepeat, ""),
 	})
-	ctx.RegisterFunc("fileRead", NewGolangFunctor(readFileFunc), TypeString, []ExprFuncParam{
+
+	ctx.RegisterFunc("fileReadText", NewGolangFunctor(fileReadTextFunc), TypeString, []ExprFuncParam{
 		NewFuncParam(TypeHandle),
 		NewFuncParamFlagDef("limitCh", PfDefault, "\n"),
 	})
-	ctx.RegisterFunc("fileClose", NewGolangFunctor(closeFileFunc), TypeBoolean, []ExprFuncParam{
+
+	ctx.RegisterFunc("fileReadTextAll", NewGolangFunctor(fileReadTextAllFunc), TypeString, []ExprFuncParam{
 		NewFuncParam(TypeHandle),
 	})
 }