Golang : Delete files by extension
Being able to select certain type of files to delete can be useful. In this follow up tutorial from Golang : Delete file, we are going to refine it further by only deleting files with certain extension with filepath.Ext()
function.
In our case, it will files with .png
extension.
Adapting the codes from earlier tutorial, we will add one additional if
statement into the code to only delete files with .png
extension.
The extra line is if filepath.Ext(file.Name()) == ".png"
deletefilebyextension.go
package main
import (
"fmt"
"os"
"path/filepath"
)
func main() {
dirname := "." + string(filepath.Separator)
d, err := os.Open(dirname)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
defer d.Close()
files, err := d.Readdir(-1)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
fmt.Println("Reading "+ dirname)
for _, file := range files {
if file.Mode().IsRegular() {
if filepath.Ext(file.Name()) == ".png" {
os.Remove("file.Name()")
fmt.Println("Deleted ", file.Name())
}
}
}
}
Put couple of .png
files into the same directory as this go program and try it out.
Reference :
http://stackoverflow.com/questions/20115327/golang-rename-the-directory-and-partial-file-renaming
See also : Golang : Delete file
By Adam Ng
IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.
Advertisement
Tutorials
+18.3k Golang : How to Set or Add Header http.ResponseWriter?
+8.5k Golang : Copy map(hash table) example
+16.8k Golang : Display list of time zones with GMT
+6.4k Golang : How to convert strange string to JSON with json.MarshalIndent
+9.3k Golang : Generate random integer or float number
+26.8k Golang : Read, Write(Create) and Delete Cookie example
+15.6k Golang : Get own process identifier
+6.3k Golang : Calculate how many weeks left to go in a given year
+6.8k Golang : Scan files for certain pattern and rename part of the files
+8.2k Golang : does not implement flag.Value (missing Set method)
+7.5k Golang : How to capture return values from goroutines?