Remove deprecated ioutil

Author: fulviodenza

cmd/kubernetes/kubernetes_app_remove.go

@@ -3,7 +3,6 @@ package kubernetes
 import (
 	"bytes"
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"strings"
@@ -43,12 +42,12 @@ var kubernetesAppRemoveCmd = &cobra.Command{
 		}
 
 		allApps := strings.Split(args[0], ",")
-		tmpFile, err := ioutil.TempFile(os.TempDir(), "kubeconfig-")
+		tmpFile, err := os.CreateTemp(os.TempDir(), "kubeconfig-")
 		if err != nil {
-			utility.Error("Cannot create temporary file", err)
+			utility.Error("Cannot create temporary file: %v", err)
 		}
 		if _, err = tmpFile.Write([]byte(kube.KubeConfig)); err != nil {
-			utility.Error("Failed to write to temporary file", err)
+			utility.Error("Failed to write to temporary file: %v", err)
 		}
 		defer os.Remove(tmpFile.Name())
 		for _, split := range allApps {

cmd/sshkey/ssh_key_create.go

@@ -2,7 +2,6 @@ package sshkey
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 
 	"github.com/civo/cli/common"
@@ -27,7 +26,7 @@ var sshKeyCreateCmd = &cobra.Command{
 		}
 
 		// reading the file
-		data, err := ioutil.ReadFile(keyCreate)
+		data, err := os.ReadFile(keyCreate)
 		if err != nil {
 			utility.Error("Reading the SSH key file failed with %s", err)
 			os.Exit(1)

utility/kubernetes.go

@@ -2,7 +2,6 @@ package utility
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"strings"
@@ -41,7 +40,7 @@ func ObtainKubeConfig(KubeconfigFilename string, civoConfig string, merge bool,
 
 func mergeConfigs(localKubeconfigPath string, k3sconfig []byte, switchContext bool, clusterName string) ([]byte, error) {
 	// Create a temporary kubeconfig to store the config of the newly create k3s cluster
-	file, err := ioutil.TempFile(os.TempDir(), "civo-temp-*")
+	file, err := os.CreateTemp(os.TempDir(), "civo-temp-*")
 	if err != nil {
 		return nil, fmt.Errorf("could not generate a temporary file to store the kuebeconfig: %s", err)
 	}
@@ -119,7 +118,7 @@ func writeConfig(path string, data []byte, suppressMessage bool, mergeConfigs bo
 		defer file.Close()
 	}
 
-	writeErr := ioutil.WriteFile(path, data, 0600)
+	writeErr := os.WriteFile(path, data, 0600)
 	if writeErr != nil {
 		return writeErr
 	}