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360 B

package main
import (
"fmt"
"io/ioutil"
"os"
)
func main() {
if len(os.Args) < 2 {
fmt.Println("File name missing")
return
}
if len(os.Args) > 2 {
fmt.Println("Too many arguments")
return
}
fileName := os.Args[1]
data, err := ioutil.ReadFile(fileName)
if err != nil {
fmt.Println(err.Error())
return
}
fmt.Println(string(data))
}