read input argument in go

main.go
package main

import (
    "flag"
    "fmt"
)

func main() {
    // Define the arguments and their default values
    path := flag.String("path", "", "the path of the file to read")
    count := flag.Int("count", 10, "number of lines to read")

    // Parse the arguments
    flag.Parse()

    // Access the values
    fmt.Printf("Reading %d lines from file %q\n", *count, *path)
}
382 chars
19 lines

main.go
go run main.go --path=/path/to/file --count=20
47 chars
2 lines

main.go
Reading 20 lines from file "/path/to/file"
43 chars
2 lines