cmd: add "stop all" to stop all running models

Allow using `ollama stop all` to stop all running models.

Closes #6987

cmd/cmd.go

@@ -366,19 +366,43 @@ func loadOrUnloadModel(cmd *cobra.Command, opts *runOptions) error {
 	return client.Generate(cmd.Context(), req, func(api.GenerateResponse) error { return nil })
 }
 
-func StopHandler(cmd *cobra.Command, args []string) error {
+func stopModel(cmd *cobra.Command, model string) error {
 	opts := &runOptions{
-		Model:     args[0],
+		Model:     model,
 		KeepAlive: &api.Duration{Duration: 0},
 	}
+
 	if err := loadOrUnloadModel(cmd, opts); err != nil {
 		if strings.Contains(err.Error(), "not found") {
-			return fmt.Errorf("couldn't find model \"%s\" to stop", args[0])
+			return fmt.Errorf("couldn't find model \"%s\" to stop", model)
 		}
 	}
 	return nil
 }
 
+func StopHandler(cmd *cobra.Command, args []string) error {
+	if args[0] == "all" {
+		client, err := api.ClientFromEnvironment()
+		if err != nil {
+			return err
+		}
+
+		models, err := client.List(cmd.Context())
+		if err != nil {
+			return err
+		}
+
+		for _, m := range models.Models {
+			err = stopModel(cmd, m.Name)
+			if err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+	return stopModel(cmd, args[0])
+}
+
 func RunHandler(cmd *cobra.Command, args []string) error {
 	interactive := true
 
@@ -1348,7 +1372,7 @@ func NewCLI() *cobra.Command {
 	runCmd.Flags().String("format", "", "Response format (e.g. json)")
 
 	stopCmd := &cobra.Command{
-		Use:     "stop MODEL",
+		Use:     "stop MODEL|all",
 		Short:   "Stop a running model",
 		Args:    cobra.ExactArgs(1),
 		PreRunE: checkServerHeartbeat,