英文:
Go: How to loop through files and compare ModTime to a date?
问题
我正在尝试遍历目录中的文件，并将它们的修改时间与特定日期进行比较，以便删除旧文件。
我正在使用ioutil.ReadDir()来获取文件，但我不知道如何获取每个文件的修改时间。
谢谢。
英文:
I'm trying to loop through files in a directory and compare their ModTime against a certain date in order to delete older files.
I'm using ioutil.ReadDir() to get the files but I'm stuck with how to retrieve the ModTime of each file.
Thanks
答案1
得分: 10
ioutil.ReadDir的返回值是([]os.FileInfo, error)。你只需要遍历[]os.FileInfo切片，并检查每个文件的ModTime()。ModTime()返回一个time.Time，所以你可以按照任何你认为合适的方式进行比较。
package main
import (
"fmt"
"io/ioutil"
"log"
"time"
)
var cutoff = 1 * time.Hour
func main() {
fileInfo, err := ioutil.ReadDir("/tmp")
if err != nil {
log.Fatal(err.Error())
}
now := time.Now()
for _, info := range fileInfo {
if diff := now.Sub(info.ModTime()); diff > cutoff {
fmt.Printf("Deleting %s which is %s old\n", info.Name(), diff)
}
}
}
请注意，这是一个用Go语言编写的示例代码，用于遍历指定目录下的文件，并删除超过指定时间的文件。
英文:
The return from ioutil.ReadDir is ([]os.FileInfo, error). You would simply iterate the []os.FileInfo slice and inspect the ModTime() of each. ModTime() returns a time.Time so you can compare in any way you see fit.
package main
import (
"fmt"
"io/ioutil"
"log"
"time"
)
var cutoff = 1 * time.Hour
func main() {
fileInfo, err := ioutil.ReadDir("/tmp")
if err != nil {
log.Fatal(err.Error())
}
now := time.Now()
for _, info := range fileInfo {
if diff := now.Sub(info.ModTime()); diff > cutoff {
fmt.Printf("Deleting %s which is %s old\n", info.Name(), diff)
}
}
}
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