granted sso populate create ./aws if it does not exist

pkg/granted/sso.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"path/filepath"
 	"sync"
 
 	"net/http"
@@ -41,6 +42,11 @@ var SSOCommand = cli.Command{
 	Subcommands: []*cli.Command{&GenerateCommand, &PopulateCommand, &LoginCommand},
 }
 
+const (
+	// permission for user to read/write/execute.
+	USER_READ_WRITE_PERM = 0700
+)
+
 // in dev:
 // go run ./cmd/granted/main.go sso generate --sso-region ap-southeast-2 [url]
 var GenerateCommand = cli.Command{
@@ -180,6 +186,16 @@ var PopulateCommand = cli.Command{
 
 		configFilename := cfaws.GetAWSConfigPath()
 
+		// Create ~/.aws if it does not exists
+		dir := filepath.Dir(configFilename)
+		if _, err := os.Stat(dir); os.IsNotExist(err) {
+			clio.Infof("created AWS config file: %s", dir)
+			err = os.MkdirAll(dir, USER_READ_WRITE_PERM)
+			if err != nil {
+				return err
+			}
+		}
+
 		config, err := ini.LoadSources(ini.LoadOptions{
 			AllowNonUniqueSections:  false,
 			SkipUnrecognizableLines: false,