Implement cleanup command for emptying trash / removing old versions of files

docs/content/docs.md

@@ -197,6 +197,11 @@ don't match.  It doesn't alter the source or destination.
 
 `--size-only` may be used to only compare the sizes, not the MD5SUMs.
 
+### rclone cleanup remote:path ###
+
+Clean up the remote if possible.  Empty the trash or delete old file
+versions. Not supported by all remotes.
+
 ### rclone dedupe remote:path ###
 
 By default `dedup` interactively finds duplicate files and offers to

fs/fs.go

@@ -273,6 +273,15 @@ type PutUncheckeder interface {
 	PutUnchecked(in io.Reader, src ObjectInfo) (Object, error)
 }
 
+// CleanUpper is an optional interfaces for Fs
+type CleanUpper interface {
+	// CleanUp the trash in the Fs
+	//
+	// Implement this if you have a way of emptying the trash or
+	// otherwise cleaning up old versions of files.
+	CleanUp() error
+}
+
 // ObjectsChan is a channel of Objects
 type ObjectsChan chan Object
 

fs/operations.go

@@ -1379,3 +1379,12 @@ func listToChan(list *Lister) ObjectsChan {
 	}()
 	return o
 }
+
+// CleanUp removes the trash for the Fs
+func CleanUp(f Fs) error {
+	fc, ok := f.(CleanUpper)
+	if !ok {
+		return errors.Errorf("%v doesn't support cleanup", f)
+	}
+	return fc.CleanUp()
+}

rclone.go

@@ -278,6 +278,19 @@ var Commands = []Command{
 		MinArgs: 1,
 		MaxArgs: 3,
 	},
+	{
+		Name:     "cleanup",
+		ArgsHelp: "remote:path",
+		Help: `
+        Clean up the remote if possible.  Empty the trash or delete
+        old file versions. Not supported by all remotes.`,
+		Run: func(fdst, fsrc fs.Fs) error {
+			return fs.CleanUp(fdst)
+		},
+		MinArgs: 1,
+		MaxArgs: 1,
+		Retry:   true,
+	},
 	{
 		Name: "help",
 		Help: `