Touch a file in Go (Golang)

Touching a file means

• Create an empty file if the file doesn’t already exist

• If the file already exists then update the modified time of the file.

package main
import (
"fmt"
"log"
"os"
"time"
)
func main() {
fileName := "temp.txt"
_, err := os.Stat(fileName)
if os.IsNotExist(err) {
file, err := os.Create("temp.txt")
if err != nil {
log.Fatal(err)
}
defer file.Close()
} else {
currentTime := time.Now().Local()
err = os.Chtimes(fileName, currentTime, currentTime)
if err != nil {
fmt.Println(err)
}
}
}

Output:

When running the first time it will create the file. After the first time, it will update the modified time of the file.