Kill zombie processes

kill_zombies.go

package main

import (
	"fmt"
	"io/ioutil"
	"os"
	"strconv"
	"strings"
)

const procDirectory = "/proc"

func main() {
	zombiePIDs, err := findZombieProcesses()
	if err != nil {
		fmt.Println("Error:", err)
		os.Exit(1)
	}

	if len(zombiePIDs) == 0 {
		fmt.Println("No zombie processes found.")
		return
	}

	fmt.Printf("Found %d zombie processes:\n", len(zombiePIDs))
	for _, pid := range zombiePIDs {
		fmt.Printf("Killing zombie process with PID %d...\n", pid)
		err := killProcess(pid)
		if err != nil {
			fmt.Printf("Error killing process with PID %d: %v\n", pid, err)
		}
	}
	fmt.Println("Zombie processes killed successfully.")
}

func findZombieProcesses() ([]int, error) {
	var zombiePIDs []int

	files, err := ioutil.ReadDir(procDirectory)
	if err != nil {
		return nil, err
	}

	for _, file := range files {
		if file.IsDir() {
			pid, err := strconv.Atoi(file.Name())
			if err != nil {
				continue // Not a process directory
			}

			statusFilePath := fmt.Sprintf("%s/%d/status", procDirectory, pid)
			content, err := ioutil.ReadFile(statusFilePath)
			if err != nil {
				continue
			}

			if strings.Contains(string(content), "Zombie") {
				zombiePIDs = append(zombiePIDs, pid)
			}
		}
	}

	return zombiePIDs, nil
}

func killProcess(pid int) error {
	process, err := os.FindProcess(pid)
	if err != nil {
		return err
	}

	err = process.Kill()
	if err != nil {
		return err
	}

	return nil
}

You can run by typing go run kill_zombies.go into the terminal.