handle minor shell-local PR suggestions and corrections

common/shell-local/config.go

@@ -153,7 +153,11 @@ func Validate(config *Config) error {
 	}
 	if config.UseLinuxPathing {
 		for index, script := range config.Scripts {
-			converted, err := ConvertToLinuxPath(script)
+			scriptAbsPath, err := filepath.Abs(script)
+			if err != nil {
+				return fmt.Errorf("Error converting %s to absolute path: %s", script, err.Error())
+			}
+			converted, err := ConvertToLinuxPath(scriptAbsPath)
 			if err != nil {
 				return err
 			}
@@ -202,12 +206,8 @@ func Validate(config *Config) error {
 }
 
 // C:/path/to/your/file becomes /mnt/c/path/to/your/file
-func ConvertToLinuxPath(winPath string) (string, error) {
+func ConvertToLinuxPath(winAbsPath string) (string, error) {
 	// get absolute path of script, and morph it into the bash path
-	winAbsPath, err := filepath.Abs(winPath)
-	if err != nil {
-		return "", fmt.Errorf("Error converting %s to absolute path: %s", winPath, err.Error())
-	}
 	winAbsPath = strings.Replace(winAbsPath, "\\", "/", -1)
 	splitPath := strings.SplitN(winAbsPath, ":/", 2)
 	winBashPath := fmt.Sprintf("/mnt/%s/%s", strings.ToLower(splitPath[0]), splitPath[1])

common/shell-local/run.go

@@ -32,11 +32,12 @@ func Run(ui packer.Ui, config *Config) (bool, error) {
 		}
 		scripts = append(scripts, tempScriptFileName)
 
-		defer os.Remove(tempScriptFileName)
 		// figure out what extension the file should have, and rename it.
 		if config.TempfileExtension != "" {
 			os.Rename(tempScriptFileName, fmt.Sprintf("%s.%s", tempScriptFileName, config.TempfileExtension))
+			tempScriptFileName = fmt.Sprintf("%s.%s", tempScriptFileName, config.TempfileExtension)
 		}
+		defer os.Remove(tempScriptFileName)
 	}
 
 	// Create environment variables to set before executing the command
@@ -83,7 +84,7 @@ func Run(ui packer.Ui, config *Config) (bool, error) {
 }
 
 func createInlineScriptFile(config *Config) (string, error) {
-	tf, err := ioutil.TempFile(os.TempDir(), "packer-shell")
+	tf, err := ioutil.TempFile("", "packer-shell")
 	if err != nil {
 		return "", fmt.Errorf("Error preparing shell script: %s", err)
 	}
@@ -105,8 +106,7 @@ func createInlineScriptFile(config *Config) (string, error) {
 		return "", fmt.Errorf("Error preparing shell script: %s", err)
 	}
 
-	tf.Close()
-	err = os.Chmod(tf.Name(), 0555)
+	err = os.Chmod(tf.Name(), 0700)
 	if err != nil {
 		log.Printf("[ERROR] (shell-local): error modifying permissions of temp script file: %s", err.Error())
 	}

website/source/docs/post-processors/shell-local.html.md

@@ -73,7 +73,7 @@ Optional parameters:
     choose to try to use shell-local for Powershell or other Windows commands,
     the environment variables will not be set properly for your environment.
 
-    For backwards compatibility, `execute_command` will accept a string insetad
+    For backwards compatibility, `execute_command` will accept a string instead
     of an array of strings. If a single string or an array of strings with only
     one element is provided, Packer will replicate past behavior by appending
     your `execute_command` to the array of strings `["sh", "-c"]`. For example,

website/source/docs/provisioners/shell-local.html.md

@@ -89,7 +89,7 @@ Optional parameters:
     these commands are not officially supported and things like environment
     variables may not work if you use a different shell than the default.
 
-    For backwards compatability, you may also use {{.Command}}, but it is
+    For backwards compatibility, you may also use {{.Command}}, but it is
     decoded the same way as {{.Script}}. We recommend using {{.Script}} for the
     sake of clarity, as even when you set only a single `command` to run,
     Packer writes it to a temporary file and then runs it as a script.