diff --git a/admin/main.go b/admin/main.go
index 4e1190d..a220e40 100644
--- a/admin/main.go
+++ b/admin/main.go
@@ -4,6 +4,7 @@ import (
 	"flag"
 	"fmt"
 	"log"
+	"os"
 )
 
 type CommandFunc func(tbm *TBM, args []string) error
@@ -23,6 +24,8 @@ var (
 		"date": cmd_date,
 		"set-date": cmd_set_date,
 		"time": cmd_time,
+		"write": cmd_write,
+		"append": cmd_append,
 	}
 )
 
@@ -79,6 +82,51 @@ func cmd_time(tbm *TBM, args []string) error {
 	return cmd_generic(tbm, "time", args, nil)
 }
 
+func cmd_write(tbm *TBM, args []string) error {
+	f, _ := os.Open(args[0])
+	defer f.Close()
+
+	buf := make([]byte, 256)
+
+	n, err := f.Read(buf)
+
+	if n == 0 {
+		return err
+	}
+
+	cmd_generic(tbm, "mufs write", []string{args[1]}, buf)
+
+	for {
+		n, err = f.Read(buf)
+
+		if n == 0 {
+			return err
+		}
+
+		cmd_generic(tbm, "mufs append", []string{args[1]}, buf)
+	}
+}
+
+func cmd_append(tbm *TBM, args []string) error {
+	var n int
+	var err error
+
+	f, _ := os.Open(args[0])
+	defer f.Close()
+
+	buf := make([]byte, 256)
+
+	for {
+		n, err = f.Read(buf)
+
+		if n == 0 {
+			return err
+		}
+
+		cmd_generic(tbm, "mufs append", []string{args[1]}, buf)
+	}
+}
+
 func main() {
 	flag.Parse()