line count

lc.go

package main

import (
    "io/ioutil"
    "fmt"
    "os"
)

func main () {
    if len (os.Args) > 1 {
        // Open file return []byte
        fileByte, _ := ioutil.ReadFile (os.Args[1])

        // Check len of []byte
        lineCount := 0
        for i := 0; i < len (fileByte); i++ {
            c := fileByte[i]
            if c == 10 || i == len (fileByte) - 1 {
                lineCount++
            }
        }
        fmt.Println (lineCount)
    } else {
        fmt.Println ("lc [file]")
    }
}