Factor each commmand into its own package

cmd/sync/sync.go

@@ -0,0 +1,43 @@
+package sync
+
+import (
+	"github.com/ncw/rclone/cmd"
+	"github.com/ncw/rclone/fs"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	cmd.Root.AddCommand(syncCmd)
+}
+
+var syncCmd = &cobra.Command{
+	Use:   "sync source:path dest:path",
+	Short: `Make source and dest identical, modifying destination only.`,
+	Long: `
+Sync the source to the destination, changing the destination
+only.  Doesn't transfer unchanged files, testing by size and
+modification time or MD5SUM.  Destination is updated to match
+source, including deleting files if necessary.
+
+**Important**: Since this can cause data loss, test first with the
+` + "`" + `--dry-run` + "`" + ` flag to see exactly what would be copied and deleted.
+
+Note that files in the destination won't be deleted if there were any
+errors at any point.
+
+It is always the contents of the directory that is synced, not the
+directory so when source:path is a directory, it's the contents of
+source:path that are copied, not the directory name and contents.  See
+extended explanation in the ` + "`" + `copy` + "`" + ` command above if unsure.
+
+If dest:path doesn't exist, it is created and the source:path contents
+go there.
+`,
+	Run: func(command *cobra.Command, args []string) {
+		cmd.CheckArgs(2, 2, command, args)
+		fsrc, fdst := cmd.NewFsSrcDst(args)
+		cmd.Run(true, command, func() error {
+			return fs.Sync(fdst, fsrc)
+		})
+	},
+}