rotate images in current directory

main.go

package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"regexp"

	"github.com/disintegration/imaging"
)

func main() {
	files, err := ioutil.ReadDir(".")
	if err != nil {
		log.Fatal(err)
	}

	imgExt := regexp.MustCompile(`^.*\.jpeg$`) // .jpeg images
	for _, file := range files {
		if imgExt.Match([]byte(file.Name())) {
			fmt.Println(file.Name())
			src, err := imaging.Open(file.Name())
			if err != nil {
				log.Fatal(err)
			}
			imaging.Save(imaging.Rotate270(src), "rt"+file.Name())

		}
	}
}