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Golang program to delete a file
Golang has os package that is used for deleting a file. In this os package the filename that we wish to delete is initially specified. The file is then deleted using the os.Remove method from the os package.In this article we are using two example to demonstrate the process of deleting a file.
Syntax
os.Remove()
The os.Remove function in Go is used to delete a file or directory identified by a file path. The file or directory path that you want to remove is the only argument for this function.
Algorithm
Step 1 − Create a package main and declare fmt(format package), os package in the program where main produces executable codes and fmt helps in formatting input and output.
Step 2 − Create a filename variable and assign it to the file which has to be deleted.
Step 3 − Then, use os.Remove function with filename as the input and if error appears while removing the file print the error.
Step 4 − If no error appears, this means that file is deleted successfully and a success message is printed.
Step 5 − The print statement is executed fmt.Println() function where ln means new line.
Example 1
In this example, we will use os package functions to execute the program.
package main
import (
"os"
"fmt"
)
func main() {
fileName := "file.txt" //create a file
err := os.Remove(fileName) //remove the file
if err != nil {
fmt.Println("Error: ", err) //print the error if file is not removed
} else {
fmt.Println("Successfully deleted file: ", fileName) //print success if file is removed
}
}
Output
If file is removed successfully Successfully deleted file: file.txt If file is not removed successfully file not found
Example 2
In this example, we will use log package functions to delete a file.
package main
import (
"log"
"os"
)
func main() {
filePath := "myfile.txt" //create a file which will be deleted
errs := os.Remove(filePath)//remove the file using built-in functions
if errs != nil {
log.Fatalf("Error removing file: %v", errs) //print error if file is not removed
}
log.Printf("File %s removed successfully", filePath) //print success if file is removed
}
Output
If file is removed successfully 2023/02/09 23:59:59 File test.txt removed successfully If file is not removed successfully 2023/02/09 23:59:59 Error removing file: open file.txt: The system cannot find the file specified.
Conclusion
We executed the program of deleting a file using two examples. In the first example, we imported os package and used the following functions to delete the file whereas in the second example we used log package along with os package to delete the files.
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