Go Standard Library Cookbook

How to do it...

1. Open the console and create the folder chapter05/recipe06.
2. Navigate to the directory.

3. Create the file flatfile.txt with the following content:

      123.Jun.......Wong......      12..Novak.....Jurgen....      10..Thomas....Sohlich...

4. Create the fileseek.go file with the following content:

        package main        import (          "errors"          "fmt"          "os"        )        const lineLegth = 25        func main() {          f, e := os.OpenFile("flatfile.txt", os.O_RDWR|os.O_CREATE,                              os.ModePerm)          if e != nil {            panic(e)          }          defer f.Close()          fmt.Println(readRecords(2, "last", f))          if err := writeRecord(2, "first", "Radomir", f); err != nil {            panic(err)          }          fmt.Println(readRecords(2, "first", f))          if err := writeRecord(10, "first", "Andrew", f); err != nil {            panic(err)          } fmt.Println(readRecords(10, "first", ...