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# app
[](https://pkg.go.dev/github.com/neonxp/app)
Simple cli applications runner.
## Usage
Commands must implements `app.Command` interface:
```go
type exampleCommand struct {
test string
}
func (c *exampleCommand) Name() string {
return "example"
}
func (c *exampleCommand) Usage() string {
return "just example command"
}
func (c *exampleCommand) Flags() *flag.FlagSet {
fs := flag.NewFlagSet(c.Name(), flag.ExitOnError)
fs.StringVar(&c.test, "test", "value", "test flag")
return fs
}
func (c *exampleCommand) Run(args []string) error {
fmt.Printf("Runned %s command with flag -test=%s and args: %v", c.Name(), c.test, args)
return nil
}
```
Main file example:
```go
package main
import "github.com/neonxp/app"
func main() {
app := app.New([]app.Command{
exampleCommand{}, // <- Register command
})
if err := app.Start(os.Args); err != nil { // <- Run!
fmt.Println(err)
os.Exit(1)
}
}
```
That's all!
(/example/example.go)[Full example]
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