Golang Advanced (ii)--COBRA more practical command line

This is a creation in Article, where the information may have evolved or changed.

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Title= "Golang Advanced (ii)--COBRA more practical command line"
Date= "2017-10-11"
tags=["Golang", "Glide", "Docker"]
categories=["Resource Management"]
Description= "Golang itself with the command-line package, a variety of case, a code neat people looking at the big head"
+++

Cobra is a very good command-line package, and Docker,hugo are using

Base command

First create a base command

package cmdimport (    "github.com/spf13/cobra")var RootCmd = &cobra.Command{    "gonne",    func(cmd *cobra.Command, args []string) {        println("gonne is my ai friend")    },}

Using commands

Invoke the command in the main method, yes, it's that simple.

package mainimport (    "fmt"    "os"    "lastsweetop.com/cmd")func main() {    ifnil {        fmt.Println(err)        os.Exit(1)    }}

At the command-line input gonne , the methods in the base command are executed Run

appletekiMacBook-Pro:src apple$ gonnegonne is my ai friend

Sub-command

Adding subcommands to the base command is also fairly straightforward, eliminating the need to write any code in the base command and the main method, just create a new go file, and the multiple subcommands are independent of each other, how elegant the code is, and say goodbye to the various case

package cmdimport"github.com/spf13/cobra"func init() {    RootCmd.AddCommand(versionCmd)}var versionCmd = &cobra.Command{    Use:   "version",    "Print the version number of Gonne",    func(cmd *cobra.Command, args []string) {        println("gonne version is 0.0.1")    },}

The effect is as follows:

0.0.1

Other

There is also a question about the parameters, we next and how to do a background process together to speak