Small non-breaking UX changes to keys {list,delete} commands

* Add --list-names flag to keys command for short listing.
* Make keys delete accept multiple key names at once.

Usage example:

* gaiacli keys list -n | xargs gaiacli keys delete

CHANGELOG.md

@@ -106,6 +106,9 @@ upgrade via: `sudo rm -rf /Library/Developer/CommandLineTools; xcode-select --in
 correct version via: `pkgutil --pkg-info=com.apple.pkg.CLTools_Executables`.
 * (keys) [\#5097](https://github.com/cosmos/cosmos-sdk/pull/5097) New `keys migrate` command to assist users migrate their keys
 to the new keyring.
+* (keys) [\#5366](https://github.com/cosmos/cosmos-sdk/pull/5366) `keys list` now accepts a `--list-names` option to list key names only, whilst the `keys delete`
+command can delete multiple keys by passing their names as arguments. The aforementioned commands can then be piped together, e.g.
+`appcli keys list -n | xargs appcli keys delete`
 * (modules) [\#4233](https://github.com/cosmos/cosmos-sdk/pull/4233) Add upgrade module that coordinates software upgrades of live chains.
 * [\#4486](https://github.com/cosmos/cosmos-sdk/issues/4486) Introduce new `PeriodicVestingAccount` vesting account type
 that allows for arbitrary vesting periods.

client/keys/delete.go

@@ -18,59 +18,61 @@ const (
 
 func deleteKeyCommand() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "delete <name>",
-		Short: "Delete the given key",
-		Long: `Delete a key from the store.
+		Use:   "delete <name>...",
+		Short: "Delete the given keys",
+		Long: `Delete keys from the store.
 
 Note that removing offline or ledger keys will remove
 only the public key references stored locally, i.e.
 private keys stored in a ledger device cannot be deleted with the CLI.
 `,
 		RunE: runDeleteCmd,
-		Args: cobra.ExactArgs(1),
+		Args: cobra.MinimumNArgs(1),
 	}
 
 	cmd.Flags().BoolP(flagYes, "y", false,
 		"Skip confirmation prompt when deleting offline or ledger key references")
 	cmd.Flags().BoolP(flagForce, "f", false,
-		"Remove the key unconditionally without asking for the passphrase")
+		"Remove the key unconditionally without asking for the passphrase. Deprecated.")
 	return cmd
 }
 
 func runDeleteCmd(cmd *cobra.Command, args []string) error {
-	name := args[0]
 	buf := bufio.NewReader(cmd.InOrStdin())
 
 	kb, err := NewKeyringFromHomeFlag(buf)
 	if err != nil {
 		return err
 	}
 
-	info, err := kb.Get(name)
-	if err != nil {
-		return err
-	}
+	for _, name := range args {
+		info, err := kb.Get(name)
+		if err != nil {
+			return err
+		}
 
-	if info.GetType() == keys.TypeLedger || info.GetType() == keys.TypeOffline {
-		// confirm deletion, unless -y is passed
-		if !viper.GetBool(flagYes) {
-			if err := confirmDeletion(buf); err != nil {
+		if info.GetType() == keys.TypeLedger || info.GetType() == keys.TypeOffline {
+			// confirm deletion, unless -y is passed
+			if !viper.GetBool(flagYes) {
+				if err := confirmDeletion(buf); err != nil {
+					return err
+				}
+			}
+
+			if err := kb.Delete(name, "", true); err != nil {
 				return err
 			}
+			cmd.PrintErrln("Public key reference deleted")
+			return nil
 		}
 
+		// old password and skip flag arguments are ignored
 		if err := kb.Delete(name, "", true); err != nil {
 			return err
 		}
-		cmd.PrintErrln("Public key reference deleted")
-		return nil
+		cmd.PrintErrln("Key deleted forever (uh oh!)")
 	}
 
-	// old password and skip flag arguments are ignored
-	if err := kb.Delete(name, "", true); err != nil {
-		return err
-	}
-	cmd.PrintErrln("Key deleted forever (uh oh!)")
 	return nil
 }
 

client/keys/list.go

@@ -2,10 +2,13 @@ package keys
 
 import (
 	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
 
 	"github.com/cosmos/cosmos-sdk/client/flags"
 )
 
+const flagListNames = "list-names"
+
 func listKeysCmd() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "list",
@@ -15,18 +18,30 @@ along with their associated name and address.`,
 		RunE: runListCmd,
 	}
 	cmd.Flags().Bool(flags.FlagIndentResponse, false, "Add indent to JSON response")
+	cmd.Flags().BoolP(flagListNames, "n", false, "List names only")
 	return cmd
 }
 
-func runListCmd(cmd *cobra.Command, args []string) error {
+func runListCmd(cmd *cobra.Command, _ []string) error {
 	kb, err := NewKeyringFromHomeFlag(cmd.InOrStdin())
 	if err != nil {
 		return err
 	}
 
 	infos, err := kb.List()
-	if err == nil {
+	if err != nil {
+		return err
+	}
+
+	if !viper.GetBool(flagListNames) {
 		printInfos(infos)
+		return nil
+	}
+
+	cmd.SetOut(cmd.OutOrStdout())
+	for _, info := range infos {
+		cmd.Println(info.GetName())
 	}
-	return err
+
+	return nil
 }

client/keys/list_test.go

@@ -57,10 +57,16 @@ func Test_runListCmd(t *testing.T) {
 			if runningUnattended {
 				mockIn.Reset("testpass1\ntestpass1\n")
 			}
+			viper.Set(flagListNames, false)
 			viper.Set(flags.FlagHome, tt.kbDir)
 			if err := runListCmd(tt.args.cmd, tt.args.args); (err != nil) != tt.wantErr {
 				t.Errorf("runListCmd() error = %v, wantErr %v", err, tt.wantErr)
 			}
+
+			viper.Set(flagListNames, true)
+			if err := runListCmd(tt.args.cmd, tt.args.args); (err != nil) != tt.wantErr {
+				t.Errorf("runListCmd() error = %v, wantErr %v", err, tt.wantErr)
+			}
 		})
 	}
 }