diff --git a/opencloud/pkg/command/shares.go b/opencloud/pkg/command/shares.go
index e2bb37a0e..ccecacf85 100644
--- a/opencloud/pkg/command/shares.go
+++ b/opencloud/pkg/command/shares.go
@@ -2,14 +2,7 @@ package command
 
 import (
 	"errors"
-
-	"github.com/rs/zerolog"
-	"github.com/urfave/cli/v2"
-
-	"github.com/opencloud-eu/reva/v2/pkg/rgrpc/todo/pool"
-	"github.com/opencloud-eu/reva/v2/pkg/share/manager/jsoncs3"
-	"github.com/opencloud-eu/reva/v2/pkg/share/manager/registry"
-	"github.com/opencloud-eu/reva/v2/pkg/utils"
+	"fmt"
 
 	"github.com/opencloud-eu/opencloud/opencloud/pkg/register"
 	"github.com/opencloud-eu/opencloud/pkg/config"
@@ -19,15 +12,22 @@ import (
 	mregistry "github.com/opencloud-eu/opencloud/pkg/registry"
 	sharing "github.com/opencloud-eu/opencloud/services/sharing/pkg/config"
 	sharingparser "github.com/opencloud-eu/opencloud/services/sharing/pkg/config/parser"
+	"github.com/opencloud-eu/reva/v2/pkg/rgrpc/todo/pool"
+	"github.com/opencloud-eu/reva/v2/pkg/share/manager/jsoncs3"
+	"github.com/opencloud-eu/reva/v2/pkg/share/manager/registry"
+	"github.com/opencloud-eu/reva/v2/pkg/utils"
+	"github.com/spf13/viper"
+
+	"github.com/rs/zerolog"
+	"github.com/spf13/cobra"
 )
 
 // SharesCommand is the entrypoint for the groups command.
-func SharesCommand(cfg *config.Config) *cli.Command {
-	return &cli.Command{
-		Name:     "shares",
-		Usage:    `cli tools to manage entries in the share manager.`,
-		Category: "maintenance",
-		Before: func(c *cli.Context) error {
+func SharesCommand(cfg *config.Config) *cobra.Command {
+	sharesCmd := &cobra.Command{
+		Use:   "shares",
+		Short: `cli tools to manage entries in the share manager.`,
+		PreRunE: func(cmd *cobra.Command, args []string) error {
 			// Parse base config
 			if err := parser.ParseConfig(cfg, true); err != nil {
 				return configlog.ReturnError(err)
@@ -37,37 +37,21 @@ func SharesCommand(cfg *config.Config) *cli.Command {
 			cfg.Sharing.Commons = cfg.Commons
 			return configlog.ReturnError(sharingparser.ParseConfig(cfg.Sharing))
 		},
-		Subcommands: []*cli.Command{
-			cleanupCmd(cfg),
-		},
 	}
+	sharesCmd.AddCommand(cleanupCmd(cfg))
+
+	return sharesCmd
 }
 
 func init() {
 	register.AddCommand(SharesCommand)
 }
 
-func cleanupCmd(cfg *config.Config) *cli.Command {
-	return &cli.Command{
-		Name:  "cleanup",
-		Usage: `clean up stale entries in the share manager.`,
-		Flags: []cli.Flag{
-			&cli.StringFlag{
-				Name:     "service-account-id",
-				Value:    "",
-				Usage:    "Name of the service account to use for the cleanup",
-				EnvVars:  []string{"OC_SERVICE_ACCOUNT_ID"},
-				Required: true,
-			},
-			&cli.StringFlag{
-				Name:     "service-account-secret",
-				Value:    "",
-				Usage:    "Secret for the service account",
-				EnvVars:  []string{"OC_SERVICE_ACCOUNT_SECRET"},
-				Required: true,
-			},
-		},
-		Before: func(c *cli.Context) error {
+func cleanupCmd(cfg *config.Config) *cobra.Command {
+	cleanCmd := &cobra.Command{
+		Use:   "cleanup",
+		Short: `clean up stale entries in the share manager.`,
+		PreRunE: func(cmd *cobra.Command, args []string) error {
 			// Parse base config
 			if err := parser.ParseConfig(cfg, true); err != nil {
 				return configlog.ReturnError(err)
@@ -77,13 +61,34 @@ func cleanupCmd(cfg *config.Config) *cli.Command {
 			cfg.Sharing.Commons = cfg.Commons
 			return configlog.ReturnError(sharingparser.ParseConfig(cfg.Sharing))
 		},
-		Action: func(c *cli.Context) error {
-			return cleanup(c, cfg)
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return cleanup(cmd, cfg)
 		},
 	}
+	cleanCmd.Flags().String("service-account-id", "", "Name of the service account to use for the cleanup")
+	err := viper.BindEnv("service-account-id", "OC_SERVICE_ACCOUNT_ID")
+	if err != nil {
+		fmt.Printf("Could not bind environment variable OC_SERVICE_ACCOUNT_ID: %s", err)
+	}
+	err = viper.BindPFlag("service-account-id", cleanCmd.Flags().Lookup("service-account-id"))
+	if err != nil {
+		fmt.Printf("Could not bind flag OC_SERVICE_ACCOUNT_ID: %s", err)
+	}
+
+	cleanCmd.Flags().String("service-account-secret", "", "Secret for the service account")
+	err = viper.BindEnv("service-account-secret", "OC_SERVICE_ACCOUNT_SECRET")
+	if err != nil {
+		fmt.Printf("Could not bind environment variable OC_SERVICE_ACCOUNT_SECRET: %s", err)
+	}
+	err = viper.BindPFlag("service-account-secret", cleanCmd.Flags().Lookup("service-account-secret"))
+	if err != nil {
+		fmt.Printf("Could not bind flag OC_SERVICE_ACCOUNT_SECRET: %s", err)
+	}
+
+	return cleanCmd
 }
 
-func cleanup(c *cli.Context, cfg *config.Config) error {
+func cleanup(cmd *cobra.Command, cfg *config.Config) error {
 	driver := cfg.Sharing.UserSharingDriver
 	// cleanup is only implemented for the jsoncs3 share manager
 	if driver != "jsoncs3" {
@@ -114,7 +119,8 @@ func cleanup(c *cli.Context, cfg *config.Config) error {
 		return configlog.ReturnError(err)
 	}
 
-	serviceUserCtx, err := utils.GetServiceUserContext(c.String("service-account-id"), client, c.String("service-account-secret"))
+	serviceUserCtx, err := utils.GetServiceUserContext(cmd.Flag("service-account-id").Value.String(),
+		client, cmd.Flag("service-account-secret").Value.String())
 	if err != nil {
 		return configlog.ReturnError(err)
 	}