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snippetgoCritical

How to access command-line arguments passed to a Go program?

Submitted by: @import:stackoverflow-api··
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programhowaccesslinecommandpassedarguments

Problem

How do I access command-line arguments in Go? They're not passed as arguments to main.


A complete program, possibly created by linking multiple packages, must have one package called main, with a function

func main() { ... }




defined. The function main.main() takes no arguments and returns no value.

Solution

You can access the command-line arguments using the os.Args variable. For example,

package main

import (
    "fmt"
    "os"
)

func main() {
    fmt.Println(len(os.Args), os.Args)
}


You can also use the flag package, which implements command-line flag parsing.

Code Snippets

package main

import (
    "fmt"
    "os"
)

func main() {
    fmt.Println(len(os.Args), os.Args)
}

Context

Stack Overflow Q#2707434, score: 160

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