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---
tags:
- v3
search:
boost: 2
---
Calling `Command.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"
"context"
"github.com/urfave/cli/v3"
)
func main() {
cmd := &cli.Command{
Flags: []cli.Flag{
&cli.BoolFlag{
Name: "ginger-crouton",
Usage: "is it in the soup?",
},
},
Action: func(ctx context.Context, cmd *cli.Command) error {
if !cmd.Bool("ginger-crouton") {
return cli.Exit("Ginger croutons are not in the soup", 86)
}
return nil
},
}
if err := cmd.Run(context.Background(), os.Args); err != nil {
log.Fatal(err)
}
}
```
|
