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46 lines
868 B
46 lines
868 B
---
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tags:
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- v2
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search:
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boost: 2
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---
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Calling `App.Run` will not automatically call `os.Exit`, which means that by
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default the exit code will "fall through" to being `0`. An explicit exit code
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may be set by returning a non-nil error that fulfills `cli.ExitCoder`, *or* a
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`cli.MultiError` that includes an error that fulfills `cli.ExitCoder`, e.g.:
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<!-- {
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"error": "Ginger croutons are not in the soup"
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} -->
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```go
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package main
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import (
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"log"
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"os"
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"github.com/urfave/cli/v2"
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)
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func main() {
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app := &cli.App{
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Flags: []cli.Flag{
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&cli.BoolFlag{
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Name: "ginger-crouton",
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Usage: "is it in the soup?",
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},
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},
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Action: func(ctx *cli.Context) error {
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if !ctx.Bool("ginger-crouton") {
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return cli.Exit("Ginger croutons are not in the soup", 86)
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}
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return nil
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},
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}
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if err := app.Run(os.Args); err != nil {
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log.Fatal(err)
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}
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}
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```
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