---
tags:
  - v2
search:
  boost: 2
---

Calling `App.Run` will not automatically call `os.Exit`, which means that by
default the exit code will "fall through" to being `0`.  An explicit exit code
may be set by returning a non-nil error that fulfills `cli.ExitCoder`, *or* a
`cli.MultiError` that includes an error that fulfills `cli.ExitCoder`, e.g.:
<!-- {
  "error": "Ginger croutons are not in the soup"
} -->
```go
package main

import (
	"log"
	"os"

	"github.com/urfave/cli/v2"
)

func main() {
	app := &cli.App{
		Flags: []cli.Flag{
			&cli.BoolFlag{
				Name:  "ginger-crouton",
				Usage: "is it in the soup?",
			},
		},
		Action: func(ctx *cli.Context) error {
			if !ctx.Bool("ginger-crouton") {
				return cli.Exit("Ginger croutons are not in the soup", 86)
			}
			return nil
		},
	}

	if err := app.Run(os.Args); err != nil {
		log.Fatal(err)
	}
}
```