Temporary files and directories

Context

Use os.CreateTemp and os.MkdirTemp to create temporary files/directories. They are automatically cleaned up by the OS or manually with defer os.Remove.

Example

Create a temporary file, write data, then delete it.

Code example

package main

import (
    "fmt"
    "os"
)

func main() {
    f, err := os.CreateTemp("", "example-*.txt")
    if err != nil {
        fmt.Println("Error:", err)
        return
    }
    defer os.Remove(f.Name())
    defer f.Close()

    f.WriteString("temporary data")
    fmt.Println("Temporary file:", f.Name())
}

Output (example)

Temporary file: /tmp/example-123456789.txt

Useful links

• os.CreateTemp
• os.MkdirTemp